Holley use to have lots of recommendations and tuning tips on their web site. Usually with a rebuild kit there are lots of little tips in the instructions as well. I've owned lots of Holleys and still have a whole shelf full of them. once you learn to tune them you won't want to run anything else.
Agreed. I used to have an Edelbrock and thought it was great and I guess I still do. I now have a double pumper and took the time to learn as much as I could about it (there's always more that I could learn though) . I've been running the Holley for over a year now and I love it.
Incredible video my friend, I watched about 20 videos before I found yours and they all sucked, even one from jags. Thank you for explaining this. You’re the man
Thanks Uncle Tony you have simplified the Process and made it very easy for me to dial in my Holley Carb you have given me the confidence and Knowledge I was after your Da Man and I mean that Sincerely it was a Pleasure watching your Video and Thank you Greatly Appreciated
When I was in high school a lot of kids would get the 750 double pumper & put it on their very low compression way to many pollution control engine & wonder why gas was coming out the spark plug holes . My brother in law and I wanted to turn one into an ash tray . But it was just to much carb for the motor . I like the afb's they seem to be more user friendly
Hey tony. I’m looking at a 83 F-100 with a 600 Holley 4bbl. Guy says it runs good when it’s cold. But when the engine warms up it loads up and floods out and stalls. Any idea what the issue may be?
I use the idle screw to square up the transition slot, then slightly crack open the secondaries to achieve idle, I noticed you did neither, will that be in the advanced tuning vid
Your one in a million that actually just gets down into information and showing the process. Not self glamorizing and posturing. Your awesome man hope this gets to help people
Scotty Kilmer and his Crew.. has always been my guess.. since the Roll up your windows bit... hahaha either way.. I don't understand anyone thumbs down advice.. like WTF.. peace
My 87 omni had a Holley. Damn thing would get stuck WOT sometimes. Key. off .pull over. Beat with any combination of rock ,piece of curb/ shoulder & tire iron. Broke CV joint & Got a Daytona before I figured that one out.
Yep. I had an 800 double pumper on my 1968 Mercury Cougar and (just like everybody else) had the Holley stickers on my back vent windows so every body knew it. PS, I'm 67 so I am definitely a boomer.
Boy I tell ya, Uncle Tony is the freakin MAN. Straight to the point, no b.s., and the Holley on my small block is running like it should all thanks to this man here. Thank you buddy!
WOW, Tony. Thanks a bunch for bringing back Fond memories. Of tuning and setting up the normal Holleys and the Double Pumpers. Had a Large double on my 350 Chevy small block. After getting it in place and bringing the fuel in right. Would take my truck around the block and after setting every thing just right. My Truck would dance! Foot off of the Gas. Almost dead stop, just rolling. Tap the Gas it would jump forward again! Any good music worked. LOL Any Long Highway or Freeway traveling. Just cut the Gas out until before dying. Back a touch, then adjust idle to lower rpms. Best way to get better MPG, and save cash too. There isn't any vehicle that you can't tune just right with those Hollys! Thanks again for the video. And it looks like you had Fun doing it too!
believe it or not I just gave a speech that was just a condensed version in this the other day in college, brought in my qft 600 cfm carb and rebuilt it in front of the class.
I have a similar story. My shop teacher in high school was giving a lecture on Holley carbs and I had mine torn apart and was telling my nearest classmates what everything was. "Mr. Aguilar, would you like to teach this lesson?" Sure. I'll give it a shot. "Mr. Aguilar, would you please go to the office and tell them to put you in Shop 2 as a student and teacher's aid for this class?" 1983. High school.
Hey you could give them a demo on a Rochester Quadrajunk. My be less than desirable but if the floats stick just tap it with a hammer to free up the obstruction. Then ask if they can tap on a clogged injector with a small hammer to get by ??
Ahhh, I cant watch these with my wife around.... she though you said doing our "wifes" on sunday nights. Then what she heard "jam nuts" I got the what are you watching..... ugh. Back to the bathroom I go. Thanks unc!
I had a tough time setting my idle mixture screws using a vacuum gauge because the cam I had at the time gave a choppy idle. My Dad came down for a visit and set them by ear. You guys are old Skool cool!!!
Great video Tony,back to basics. I hope you do more videos on the Holley as I always read on forums that "I had a 'brand X' and it ran like crap and I put a 'other brand X' on and it runs twice as good....I would never buy a ' 1st brand X' ...there garbage. I feel if people should learn how to diagnose and repair the problem rather than just replacing parts until they hit the problem. I like Holley, Eddy (carter) and Q jets and they all get bad raps, some people blame the brand when in fact it is their own lack of knowledge and inexperience that is the problem........rant over!
Spot-on carb setup tips! Follow these directions and you should have Fuel injection-like drivability and throttle response. Maybe not cold start perfection but damn near it.
Come on.. you'll get to say, Yell so I went ahead and installed a Holley Double Pumper.. that's it there.. Pumping Double.. thanks Boss.. Oi oi oi.. keep these Tech tips going..
My problem and I have the Holley 80457-2 4 barrel. Starts fine, and revs fine sitting. I live in San Francisco and my car is struggling to get up the hills. Have had a full tune up, car electronic ignition, 350 Chevy eng. going up hill, struggling to achieve power, no surging, and I can put car in lower gear and no difference. Ideas? I thought could the mechanical fuel pump be bad? Car has 2,800 miles on a 18 year old engine.
Uncle Tony, I enjoy the heck out of all your videos. Currently restoring a '72 Dart and a '78 Dodge Adventurer and your videos help me a lot. Really hoping you make the shirt "I am the computer!" I'll buy it!
Wow, amazing how customizable american carbs are. Here in europe on most Webers or Solexes it's all "pre-tuned" in other words it'll run on one specific car and you can't adjust it for anything else for the love of god. Hell, some don't even have air-fuel mixture screws, what the hell!?
My pops had a set of webers on a 67 euro spec 911. He had a gaggle of parts for em , all kinds of Jets and swappable venturis ,you could have put them on anything and tuned em in.
@@johnwilburn Which is pretty funny if you ask me. These days people go on and waste hundreds of dollars for some stupid fucking tool to scan for their car's trouble codes on a computer but are perplexed by 3 fucking screws.
@@grievuspwn4g3 Yeah, Frankly if you ask me, nothing beats pure mechanicals. If I can't fix my car without electricity or some stupid fucking plug I'm not interested, not like I'm missing out, cars look like garbage since the 90's.
@@GlamStacheessnostalgialounge the only kind of tech I'm pretty interested in is the wide band o2 sensor for a carbureted engine. Makes the tuning a lot simpler when you have air/fuel ratio in a number on a gauge.
Looking for info on how to tune my holley brawler because my 305 is bogging down, gonna follow this video to a T! Best holley carb walkthrough by far on YT!
During your stream I wasn't allowed to chat,comment,or like it.It kept saying that there was an error even though I could go on other people's streams that were going on the same time and like,comment,and chat.TH-cam is changing it's terms and conditions at the beginning of next month to more easily delete channels.Maybe that's something you might want to look into.I will still watch either way.Take care.
Holly carbs ALWAYS make a fuel stained mess on your pretty aluminum intake anytime you need to tune something major on them. The only way to minimize the ruining of the finish on your intake was to be a strick Nazi about fuel spillage and remove one lower floatbowl screw and drain into a cup. Hard to beat their full throttle power and response when they are properly setup though. Seams like I remember ALWAYS fucking with my Holly carbs. Carters & Rochesters I seam to remember it was always just set and forget. They didn't need the continual adjustments. They are easier and cleaner to work on once you understand how they all work.
seen a guy pitching aftermarket fuel injection on a tv show because he said carburetors work off hocus pocus and magic. if that was true then why do Holley carburetors to this day still develop more power.
Hahaha.. yeah.. I heard once Carburetor is a French word that Means Don't Touch.. hahaha, I've tried to master the one I have first.. Carter BBD sitting on my 318 Swap from slant6 in my daily driver 68 Dodge Dart.. I'll get to 4 barrel soon..
Thanks Love the way you explain the holley , May i suggest if running menthol googles closed ones header extensions & maybe a big fan as the fumes Will BURN your eyes , About your boo boo Uncle Tony try taking some viatimin E , works 4 me i get lots of burns . lol
@keith cunningham No arguments there... But a little epoxy and some time they were good as new. The thing I like best about them - and Quadra-jets and sidedraft Webbers was there wasn't anywhere in the fuel curve that couldn't be fine tuned. Granted, Holleys are easier, but they're just not as accurate at metering fuel.
I can remember trying to figure this out at around 15 yrs old, going from go karts and dirt bikes, attempting to setup a carb lol I also recall cooking my eyebrows off on initial start of my first project... too fat and too much timing lol
Is it normal if my car bogs/misfire while the engine is cold, even more so on WOT. But after I drive it for 10 minutes it runs smoother and actually goes at WOT? I have a old 4.2 v6 c10 with a eadlebrock 600cfm carb. Idk if that’s normal or I need a tune up. (First old car)
I always adjust idle mixture screws with a vacuum gauge finding peak vacuum. Once you find peak vacuum you can take that value and divide it in half to get you in a good range for the size of the power valve you need. Example 15 pounds of vacuum would be a 7.5.
Exactly. Some guys say thats wrong. They want you to check your Vac at your cruise speed, then go down a couple numbers (12" at cruise = 9.5" power valve) While it does kinda work at cruise speed (dumps fuel too early for me), where it really screws things up is taking off from a red light. My cruise Vac is 15", my idle Vac is 5", so I tried an 8.5" pv. When I take off, my Vac pings to 12" maybe, then drops to below 8.5". My power valve opens and dumps in fuel at 2000 rpms, part throttle (pings 10 afr when I want it 13.5 to 14:1 afr). I put in a 4.5" pv, all is good now
Uncle Tony I need your help.i am rebuilding a Holley 600cfm carb.i am about to purchase needle and seat valves and I found out that there are 0.97...0.110...0.120...0.130....0.150 tip.which one should I purchase??
Hi Tony, after getting my Holley carb on and battling with it, It was really rough running and I really thought this new carb was junk, but after watching your video I made all the adjustments you laid out and it's running GREAT now! Thank you so much for all the great information, your the man!
I once had a Chevy 350 that I put a 750 Vac secondary Carb on.Mild cam also & old cast iron Exhaust manifold on to.It ran like a pig on full throttle but ran perfect on a Dyno.Turned out the fuel line was getting to hot next to the exhaust manifold & the fuel vapour was drawing in on acceleration full throttle & stuffing up the fuel pump.Also the fuel pump was over 7lbs pressure & this stuffed up the float level in the carbi.Next I found out the Mufflers were 2 restrictive & this buggered up acceleration also.On a good note I had a 351 Cleveland that ran way to rich just off idle & a USA magazine said drill out the butterfly,s 1/8 to lean out the mix & bring back the idle mixture use.Bingo,it worked a treat.The 750 double pumper was drilled 4mm in the end & fuel economy came back as well as clean spark plugs.It was the lumpy cam that created this drama & I had to advance the timing from 8 to 12 static & drop total from 38 to 27 deg all in by 2500 rpm .Also it had closed chamber 302 heads on it giving high compression & was told they had to come off for our low octane fuel.Not true I got 400 HP after all this and a set of 2.5 in Super Turbo Mufflers. The 1250KG T bucket got 11.8 seconds on a 1/4 mile like this any day of the week.
I have a hp950 on a 406. I took the linkage from another carb and revuilt it. I have it set with a 50cc primary with the pink cam and a 30cc on back. Some guys say I should do it the other way? I figgured having it on the primary will give me better 0-60s.. what do u think?
Hey Unc..Please look into this. I think something is different on the new Holleys. I am not the first to see this. Brand new Holley 670 Street Avenger. If I set it for 1.5 turns out, my eyes bleed from fuel odor. No kidding, I had to wear a respirator to be under there. Final setting ? A small hair past a half turn from fully closed. I am not the first to see this. Scares me I am too lean at idle but any more, you can really smell fuel. Any thoughts ?
aw, man! I got something out of that alright.... A headache to go with dinner^____^ No, love the carburetor "schtuff" as that's what I have on me oldies! See they're not scary things(carbs) people! THANK YOU!!! UT, UK!
I get lots of laughter and smirks when I open my hood at the gas station with a screwdriver and vacuum guage in hand. Seems like I'm always searching for that perfect tune
I one time had a young guy come by the house with a small block Chevy that backfired so bad that the whole plenum was black. I adjusted the pump and he thought I was a god.
Tony, I rebuilt my 302 in my 70 mustang mach 1, bored block .60 mild cam, long tube headers, and swapped the stock 2 bbl intake and carb with a dual plane high-rise and a Holley 4160, the cable throttle linkage is 2 to 3 inches short now, do they make a linkage kit for that or just add to the cable the best you can?
You are the Man. Not only you have the knowledge, you can also transmit it. I was wandering if you could help me with a question please. I am now 67 years old, and in my younger days I use to work on cars. Recently I have changed a 1986 Automatic Full size Bronco 351 Cleveland rebuild and with no many miles on it, from dedicated "LPG", back to Petrol, ( or what you guys in the States call "GAS", I live in Australia by the way). I fitted a 600 Holley Vacuum secondary which I had put it together at least 20 years ago. It starts at first go and idle to perfection and smooth, but I smell fuel vapour at starting, more like an exhaust fumes like, even in the engine bay. Accelerates smooth and quick .I changed the" MSD" mechanical advance bush into the blue , All up I have 32 degrees advance with 11/12 basic. the bush for LPG I had to make it myself because it didn't existed in the distributer kit , etc. .Once on the road I'll have to finally tune the through out springs, to suit the mechanical advance. Question is... : way it smells so reach??,. adjusted "carter" electric fuel pressure to 6 PSI with cold temperature anther the bonnet and engine . Fuel pump should start together with the starter motor solenoid at firs ( because of the safety switch installed), but, because it is/was only a Sunday car, or just to go bush, when I rebuild the engine I fitted a secondary oil pick up, Just a tube like, just off the inside bottom of the oil sump) in other to pressurize the block before occasionally start it, and what it does, it starts the fuel pump a bit prematurely, maybe coursing a rich condition???. I didn't had this problem with "LPG". Or I am imaging thinks???? So I dropped the Fuel pump pressure to 5 and a 1/4 "PSI" , I will restart the truck tomorrow in day time.. " too late now". Will like to see if the enrichment is gone, but a good needle and seat valve and good float adjusted (as "I THINK" they are???), should stop extra fuel passing needle and seat, unless the "O" rings are flatted???? . The carburetor was kipped in a seal plastic box, and when started first time two days ago, the throttle plate leaked a drop or two only, out of the secondary side plate shaft, (and no more now),near the secondary vacuum unit. I hope I gave you enough description, I know is never enough. You response and opinion at your time, is very much appreciated. Kind Regards... "COS".
tony...best thanksgiving wishes to you and kathy, your family and friends. and good fortune and continued progression for you and your new channel...you know you are always welcome at my table........kutgw.
So I let someone talk me into putting a Holley 750 on my 318 , mild cam, pistons 30 over. Never got response I hoped for..so..just installed Holley 600 double pumper, vacuum secondary.. anyway, can't get idle down. Vacuum hoses are good, 600 hooked up exactly like 750 was..is it possible my timing is the issue?. I didn't want to mess with factory settings yet
THE SIZING OF THIS DESIGNED PART is everything,just like sizing the cam for the use,this carburetor has been masterminded since 1970,me, is use the 350 500 cfm two barrels for all of my needs,for drag racing and top end speed,its a proven track winner, LINDSAY proved two of them were even better than mechanical fuel injection on the fastest SUPERBIRD in the world on the bonneville salt flats,carburetors are superior for total all out fuel flow,it was a normally aspirated and damn impressive hemi,they function pretty good on blowers too
Interesting information Uncle Tony, although the Holley Manuals can be jam packed full of Carburettor goodness, they can be a little vague at times. Wholly, I think the eagerness young blokes can be at fault here wanting bolton power - fit and forget so to speak - and wonder why they run into trouble for rushing a job they needed to take their time with. I believe the mystery of Holley Carburettor tuning is solved, so it makes more sense now. I did see and read an article last year where a double pumper was modified for street/bracket racing for aesthetics, power, metering and airflow, which was very interesting indeed. Thankyou for sharing this, Cheers :-)
I like others appreciate your expertise and explanation. I am working on a 1974 ford bronco with a Holley truck avenger 670 carb. It’s been rich the whole time I had it. I think you helped and it’s way better but it’s too many cfms for a 351 Windsor. Will it still be too rich? Do I need to downsize my carb?
just what i needed... 71 mustang 408 stroker, quickfuel SS 750 holley carb running rich and fouling plugs.. i will try to tune again before messing with internal jets, which I have never done, reco on the jets has been come down two step... i hope i don't have to do that after watching this video!! thanks, bro!!
Hi Uncle! New subscriber and frequent visitor to your Channel. Does it make a difference if I have a Holly 4160 # 3310-8 750 cfm? I need to do more research on all the particulars of this carb. Came on the car, 460 BBF mild build, MSD billet mechanical advance. Thanks. Cheers from Motown!
Missed powervalve. If you know how much manifold vacuum your engine produces before ordering carb you can get pv installed. If not stock carb come with 6.5 hg pv. Good for 13 hg maifold vac. I have 425 hp cam large lift large duration low manifold vac (10 hg) the math is manifold vac ÷2= pv size. Ex. 10 hg manifold vac 10 ÷2= 5.0 hg power valve
My 800 DP manual tells me to use some Folded Wire to shove into the idle orifice if the idle is "off". So I did that. Idle vacuum is 6 so I use a 4 powervalve. 72-76 mainjets , 50cc pump,.... But a 650 pulls much better below 6500 rpm, the 800 makes 50hp or more above 6500 The carb shown is a single pump spread bore
Hey Im rebuilding my Pontiac 400, its being bored to 60 over, Ive been told the size of carb is 1.5 times the C.I. of the engine which in this case should be 690 correct? Which would be about 700 cfm carb? PS watch all your vids really help while Im rebuilding. Thakns DR
I have a holley carb that doesnt have any float adjustments nor does it have air idle adjustments on the rear side of the carb.. i was told the carb was blue printed ..but my truck bogs down badly when i flore it . On the front top lip of the carb says 1763 List-6210 The float adjustments are sealed off ..can anyone help me on how to adjust this holley with these issues to the carb
Hey uncle tony ! Can u do a video on "vacuum"???? What is it? Why do u need it? Whats "vacuum secondaries"? Why some cars run wipers n headlights off of it?? Why do some guys jus stick a bolt in a vacuum line to block it off n send it down the road??? Ur expertise n explanation would sure be helpful to many i assume! Also, more content for u would be "exhaust back pressure" do u need it n why?? Many have wayyy different opinions! Btw- subbed from day 1 ,love ur vids n im also from the days of racing at "fountain ave" and "franny lew" NY in late 70's (i was a kid riding w older brother n friends)and 80's (started drivin)!!! Keep up the good work droppin ur knowledge n i wish good things for you and yours!
Does anyone know what size holley 2bbl was on a 1975 dodge ram pickup. I have a holley R 7088 A carb but I need to know the CFM of it. I can't find it anywhere and calling Holley might as well call uncle tony himself...:_)
@uncle Tony's Garage Hi!!! Sorry for my bad english!!! I have a holley 650 on a 454 and its running too ''rich''. It smells gas when it runs idle and if i rev it, it will puff blueish smoke. Where should i look 1st? Tyvm
I'm building a Jeep rock crawler with a mild rebuilt AMC 304. Edelbrock got me stranded on camber trails every chances he had. I got my hand on a Holley Truck Avenger do you have any recommendations since the engine sits at a 5 to 10° backward angle to align with drivetrain.
Awesome video! helped me out lots did have one question. I can’t get my float setting lower then 3/4 up the glass on the secondary’s on my Holley 770 avenger. I’m pretty much maxed out where the adjuster nut is just grabbing the needle an seat valve. Any suggestions?
Tony I have a question. There’s a 1966 Chrysler 300 with the 383 4 door. A/C asking 3600 I don’t have to much information on it. But the pictures look clean and tons of new parts. What would you pay for it?
Uncle Tony. I need your advice. I have a new holley 670 cfm vacuum secondary with electric choke. my question is, what should the cold start RPM be? mine starts at 2600 RPM and seems a bit high. I have looked around and the closest info I find is it should idle around 1500 RPM. I have an automatic, so does it mean in gear or neutral? Can you make a video on cold starting tuning with electric choke please?
I have a Holley 3810 4b. 67 Vette won’t hold idol and stalls. However sometimes it does hold idol. How often should I change my fuel filter on the primary side. Thanks
Regarding dual quad setup (specifically for progressive linkage), is there a rule of thumb for putting dual carbs on a fresh engine (assuming the heads and cam/valvetrain can flow it)? Do you set both carbs up at 80% tune from the start, or do you tune and work on the primary before the secondary? Just looking for a high level understanding based on the content you shared with us in this video. Thanks!
Generally speaking, you need to jet the carbs down when using in an 8bbl set-up. Example, 76's would be dropped down to 72's or so. You treat the idle settings on both carbs equally, even on a progressive set-up, UNLESS you are using a dedicated "secondary carb" that does not have idle circuitry included. Example of that would be the factory front carb used on the Street Hemi
Holy cow UT could have propped up his Mopar or No car status up by explaining that Chrysler was the first to use a downdraft float carb on a production vehicle in 1929. Guess who Carl Breer it's designer was employed by?? Non other than Holley.
Holley use to have lots of recommendations and tuning tips on their web site. Usually with a rebuild kit there are lots of little tips in the instructions as well.
I've owned lots of Holleys and still have a whole shelf full of them. once you learn to tune them you won't want to run anything else.
Agreed. I used to have an Edelbrock and thought it was great and I guess I still do. I now have a double pumper and took the time to learn as much as I could about it (there's always more that I could learn though) . I've been running the Holley for over a year now and I love it.
@@bouncingsoul777 Curious what you love about the Holley vs the Edelbrock?
Incredible video my friend, I watched about 20 videos before I found yours and they all sucked, even one from jags. Thank you for explaining this. You’re the man
Thanks Uncle Tony you have simplified the Process and made it very easy for me to dial in my Holley Carb you have given me the confidence and Knowledge I was after your Da Man and I mean that Sincerely it was a Pleasure watching your Video and Thank you Greatly Appreciated
Yes valuable carb info from the man that breaks it down step by step with no bullshit. Hell yeah brother
We’ll done!
@@ryanparker8470q
Your video helped me a lot on the Holley carb I bought for my 1980 460 Cu in Ford motor. Dying to put it on, thank you very much.
Great explanation for a person like me who grew up in the age of efi crabs and tuning are almost a total mystry to me
When I was in high school a lot of kids would get the 750 double pumper & put it on their very low compression way to many pollution control engine & wonder why gas was coming out the spark plug holes . My brother in law and I wanted to turn one into an ash tray . But it was just to much carb for the motor . I like the afb's they seem to be more user friendly
Hey tony. I’m looking at a 83 F-100 with a 600 Holley 4bbl. Guy says it runs good when it’s cold. But when the engine warms up it loads up and floods out and stalls. Any idea what the issue may be?
I use the idle screw to square up the transition slot, then slightly crack open the secondaries to achieve idle, I noticed you did neither, will that be in the advanced tuning vid
Can't throw too much at guys just starting to learn this stuff. One step at a time
I would love to know how to compensate for altitude changes. I’m going to drive a car back from Oregon to Illinois.
On the fly?...you can't. But, the difference is really so minor it you'll never feel it
Get a 1971 carter thermoquad😀
Uncle Tony's Garage I would imagine that the best that one could do is rejet the carburetor leaner for higher altitude. A Holley 1920 is simple.
“More than a tuned fuel leak” not according to my parents lmao
Nice breakdown! Probably basic for most but eye opening for others (including myself) how important it is to get back to the basic settings
Your one in a million that actually just gets down into information and showing the process. Not self glamorizing and posturing. Your awesome man hope this gets to help people
Tony, locks eyes with Tom Hanks: I am the computer now.
Boomer status symbol...!!! Love it
Who the hell put thumbs down an hour after it comes out? Not from the core fan base, obviously.
Probably some tesla hippies
@@twincammikev ha I was going to say them fuel injection boys
Bernie sanders
Probably a professional troll, sitting in their Mommies basement trying to demonitise the channel
Scotty Kilmer and his Crew.. has always been my guess.. since the Roll up your windows bit... hahaha either way.. I don't understand anyone thumbs down advice.. like WTF.. peace
My relationship with holley carbs over the years can only be defined as "love hate"
For the last 40+years, me too.
I've heard the same. Edelbrock might be more my incompetent speed.
Love hate, when they are set up right I love em, but when they are out of whack I hate em
My 87 omni had a Holley. Damn thing would get stuck WOT sometimes. Key. off .pull over. Beat with any combination of rock ,piece of curb/ shoulder & tire iron.
Broke CV joint & Got a Daytona before I figured that one out.
That seems to be 90% of the population feeling about carbs period :D
"the ultimate boomer status symbol" 😂
I have several. Hahahaha
Tristan Holland ....yep and a set of Cragars
I'm far from a boomer and know holley carbs like the back of my hand. Lol.
To all old school gearheads you lucky sob lol I'll be joining soon enough time will come
Yep. I had an 800 double pumper on my 1968 Mercury Cougar and (just like everybody else) had the Holley stickers on my back vent windows so every body knew it. PS, I'm 67 so I am definitely a boomer.
We are spoiled rotten EFI! Tuning those carbs is an art form. Thanks Zio!
Should have tossed that sight plug across the garage 😂
Had my fingers crossed.
Yup i lol just thinkn it
Boy I tell ya, Uncle Tony is the freakin MAN. Straight to the point, no b.s., and the Holley on my small block is running like it should all thanks to this man here.
Thank you buddy!
UNCLE TONY! Please keep it going woth the holley! We need to learn whats the next step on tunimg these! AS ALWAYS GREAT JOB!
As a 22 year old just getting into carburetors, I second that. Know the basics but need more of the fine tuning aspect of it.
You sir are a champion, solid information that is well explained, easy to follow along and no other BS.
Very well done.
This is one of the most informative videos Ive come across in a very long time. Thank you for taking the time to make this. Very helpful to me.
Just stumbled on your channel a couple weeks ago and so glad I have. I have enjoyed your channel and info you are putting out. Keep up the great work!
WOW, Tony. Thanks a bunch for bringing back Fond memories. Of tuning and setting up the normal Holleys and the Double Pumpers.
Had a Large double on my 350 Chevy small block. After getting it in place and bringing the fuel in right.
Would take my truck around the block and after setting every thing just right. My Truck would dance!
Foot off of the Gas. Almost dead stop, just rolling. Tap the Gas it would jump forward again! Any good music worked. LOL
Any Long Highway or Freeway traveling. Just cut the Gas out until before dying. Back a touch, then adjust idle to lower rpms.
Best way to get better MPG, and save cash too.
There isn't any vehicle that you can't tune just right with those Hollys!
Thanks again for the video. And it looks like you had Fun doing it too!
believe it or not I just gave a speech that was just a condensed version in this the other day in college, brought in my qft 600 cfm carb and rebuilt it in front of the class.
Nice Dude.. don't ever Give up.. if they will listen, keep telling them..
I have a similar story. My shop teacher in high school was giving a lecture on Holley carbs and I had mine torn apart and was telling my nearest classmates what everything was. "Mr. Aguilar, would you like to teach this lesson?" Sure. I'll give it a shot. "Mr. Aguilar, would you please go to the office and tell them to put you in Shop 2 as a student and teacher's aid for this class?"
1983. High school.
Hey you could give them a demo on a Rochester Quadrajunk. My be less than desirable but if the floats stick just tap it with a hammer to free up the obstruction. Then ask if they can tap on a clogged injector with a small hammer to get by ??
Ahhh, I cant watch these with my wife around.... she though you said doing our "wifes" on sunday nights. Then what she heard "jam nuts" I got the what are you watching..... ugh. Back to the bathroom I go.
Thanks unc!
Shirt idea: "i am the computer" with an image of uncle tony under the hood.
Just rebuild my first carburetor and used exactly the set up you said and it started up perfect. Thanks a ton!
I had a tough time setting my idle mixture screws using a vacuum gauge because the cam I had at the time gave a choppy idle. My Dad came down for a visit and set them by ear. You guys are old Skool cool!!!
Great video Tony,back to basics. I hope you do more videos on the Holley as I always read on forums that "I had a 'brand X' and it ran like crap and I put a 'other brand X' on and it runs twice as good....I would never buy a ' 1st brand X' ...there garbage.
I feel if people should learn how to diagnose and repair the problem rather than just replacing parts until they hit the problem.
I like Holley, Eddy (carter) and Q jets and they all get bad raps, some people blame the brand when in fact it is their own lack of knowledge and inexperience that is the problem........rant over!
Spot-on carb setup tips! Follow these directions and you should have Fuel injection-like drivability and throttle response. Maybe not cold start perfection but damn near it.
This channel is one of the best things to happen for classic car enthusiasts.
Come on.. you'll get to say, Yell so I went ahead and installed a Holley Double Pumper.. that's it there.. Pumping Double.. thanks Boss.. Oi oi oi.. keep these Tech tips going..
Great tutorial on how to adjust your Holley carburetor have a good day Tony and say hello to Aunt Kathy for me
ROLL UP YOUR WINDOWS!!!
Uncle Tony needs to go ahead and adopt this for his video opener. The phrase would also look great on an Uncle Tony mug.
I must've missed a video haha
I think a better one for Tony would be... Light up your cigarettes.. LOL
Yes roll up your windows (because it's prolly worth at least a tenth in the quarter )😀
@@twincammikev
Can I take a stab at your screen name ?
Is it a mk1 vw with a(later mk2) 16v?
I've just returned to #carblife picked up a 65 fastback built 351w with a berry grant 750 🔧💪👊🔴💯🇺🇲
My problem and I have the Holley 80457-2 4 barrel. Starts fine, and revs fine sitting. I live in San Francisco and my car is struggling to get up the hills. Have had a full tune up, car electronic ignition, 350 Chevy eng. going up hill, struggling to achieve power, no surging, and I can put car in lower gear and no difference.
Ideas? I thought could the mechanical fuel pump be bad? Car has 2,800 miles on a 18 year old engine.
Uncle Tony, I enjoy the heck out of all your videos. Currently restoring a '72 Dart and a '78 Dodge Adventurer and your videos help me a lot. Really hoping you make the shirt "I am the computer!" I'll buy it!
Wow, amazing how customizable american carbs are. Here in europe on most Webers or Solexes it's all "pre-tuned" in other words it'll run on one specific car and you can't adjust it for anything else for the love of god. Hell, some don't even have air-fuel mixture screws, what the hell!?
My pops had a set of webers on a 67 euro spec 911.
He had a gaggle of parts for em , all kinds of Jets and swappable venturis ,you could have put them on anything and tuned em in.
American carburetors got that way. The majority of people who adjust on carbs have no idea how they work or what they're doing.
@@johnwilburn Which is pretty funny if you ask me. These days people go on and waste hundreds of dollars for some stupid fucking tool to scan for their car's trouble codes on a computer but are perplexed by 3 fucking screws.
@@grievuspwn4g3 Yeah, Frankly if you ask me, nothing beats pure mechanicals. If I can't fix my car without electricity or some stupid fucking plug I'm not interested, not like I'm missing out, cars look like garbage since the 90's.
@@GlamStacheessnostalgialounge the only kind of tech I'm pretty interested in is the wide band o2 sensor for a carbureted engine. Makes the tuning a lot simpler when you have air/fuel ratio in a number on a gauge.
Looking for info on how to tune my holley brawler because my 305 is bogging down, gonna follow this video to a T! Best holley carb walkthrough by far on YT!
During your stream I wasn't allowed to chat,comment,or like it.It kept saying that there was an error even though I could go on other people's streams that were going on the same time and like,comment,and chat.TH-cam is changing it's terms and conditions at the beginning of next month to more easily delete channels.Maybe that's something you might want to look into.I will still watch either way.Take care.
I wonder why that is. You're the first I know of to have a problem getting in there.
Me, I love the Carters AFBS with mechanical secondary's. I never had a good experience with Hollys. Just my opinion
holley,s are crap,ancient carbs,the thermoquad was better,thank fk weber bought them out.
You're not alone: Over the years I grew to despise Holley carbs. Nothing but love for Carter's
Holly carbs ALWAYS make a fuel stained mess on your pretty aluminum intake anytime you need to tune something major on them. The only way to minimize the ruining of the finish on your intake was to be a strick Nazi about fuel spillage and remove one lower floatbowl screw and drain into a cup. Hard to beat their full throttle power and response when they are properly setup though. Seams like I remember ALWAYS fucking with my Holly carbs.
Carters & Rochesters I seam to remember it was always just set and forget. They didn't need the continual adjustments. They are easier and cleaner to work on once you understand how they all work.
Demon carbs when you gotta haul some ass everytime
I prefer the quadrajet or thermoquad, the holly doesn't have vacuum controlled primary metering jets.
seen a guy pitching aftermarket fuel injection on a tv show because he said carburetors work off hocus pocus and magic. if that was true then why do Holley carburetors to this day still develop more power.
Hahaha.. yeah.. I heard once Carburetor is a French word that Means Don't Touch.. hahaha, I've tried to master the one I have first.. Carter BBD sitting on my 318 Swap from slant6 in my daily driver 68 Dodge Dart.. I'll get to 4 barrel soon..
Thanks Love the way you explain the holley , May i suggest if running menthol googles closed ones header extensions & maybe a big fan as the fumes Will BURN your eyes , About your boo boo Uncle Tony try taking some viatimin E , works 4 me i get lots of burns . lol
Hey U.T.!
Why not scare hell out of them - do a video on THERMO-QUADS!!!
@keith cunningham
No arguments there...
But a little epoxy and some time they were good as new.
The thing I like best about them - and Quadra-jets and sidedraft Webbers was there wasn't anywhere in the fuel curve that couldn't be fine tuned.
Granted, Holleys are easier, but they're just not as accurate at metering fuel.
These videos are GOLD. Good luck finding a shop that can do carb work. Thank you UT…
You forgot to tighten the lock screw!
Great. now I have to have a Holley carburetor in my life
I can remember trying to figure this out at around 15 yrs old, going from go karts and dirt bikes, attempting to setup a carb lol I also recall cooking my eyebrows off on initial start of my first project... too fat and too much timing lol
Good morning man very early lol heading to work.
Uncle Tony.....the Who.....Can You See The Real Me
Is it normal if my car bogs/misfire while the engine is cold, even more so on WOT. But after I drive it for 10 minutes it runs smoother and actually goes at WOT?
I have a old 4.2 v6 c10 with a eadlebrock 600cfm carb. Idk if that’s normal or I need a tune up. (First old car)
The first holley I ever worked on had a glass bowl .
Hard to find in today's land.
Awesome video Uncle Tony! I love learning about classic car-related, as an apprentice mechanic now we never get to learn about these!
I always adjust idle mixture screws with a vacuum gauge finding peak vacuum. Once you find peak vacuum you can take that value and divide it in half to get you in a good range for the size of the power valve you need. Example 15 pounds of vacuum would be a 7.5.
Exactly. Some guys say thats wrong. They want you to check your Vac at your cruise speed, then go down a couple numbers (12" at cruise = 9.5" power valve)
While it does kinda work at cruise speed (dumps fuel too early for me), where it really screws things up is taking off from a red light. My cruise Vac is 15", my idle Vac is 5", so I tried an 8.5" pv. When I take off, my Vac pings to 12" maybe, then drops to below 8.5". My power valve opens and dumps in fuel at 2000 rpms, part throttle (pings 10 afr when I want it 13.5 to 14:1 afr).
I put in a 4.5" pv, all is good now
This is great. Thank you.
Uncle Tony I need your help.i am rebuilding a Holley 600cfm carb.i am about to purchase needle and seat valves and I found out that there are 0.97...0.110...0.120...0.130....0.150 tip.which one should I purchase??
Hi Tony, after getting my Holley carb on and battling with it, It was really rough running and I really thought this new carb was junk, but after watching your video I made all the adjustments you laid out and it's running GREAT now! Thank you so much for all the great information, your the man!
I once had a Chevy 350 that I put a 750 Vac secondary Carb on.Mild cam also & old cast iron Exhaust manifold on to.It ran like a pig on full throttle but ran perfect on a Dyno.Turned out the fuel line was getting to hot next to the exhaust manifold & the fuel vapour was drawing in on acceleration full throttle & stuffing up the fuel pump.Also the fuel pump was over 7lbs pressure & this stuffed up the float level in the carbi.Next I found out the Mufflers were 2 restrictive & this buggered up acceleration also.On a good note I had a 351 Cleveland that ran way to rich just off idle & a USA magazine said drill out the butterfly,s 1/8 to lean out the mix & bring back the idle mixture use.Bingo,it worked a treat.The 750 double pumper was drilled 4mm in the end & fuel economy came back as well as clean spark plugs.It was the lumpy cam that created this drama & I had to advance the timing from 8 to 12 static & drop total from 38 to 27 deg all in by 2500 rpm .Also it had closed chamber 302 heads on it giving high compression & was told they had to come off for our low octane fuel.Not true I got 400 HP after all this and a set of 2.5 in Super Turbo Mufflers. The 1250KG T bucket got 11.8 seconds on a 1/4 mile like this any day of the week.
possibly the best tuning video I ve found so far, short, sweet and to the point. can't wait to get home now and tune the Holley! Thank you
I have a hp950 on a 406. I took the linkage from another carb and revuilt it. I have it set with a 50cc primary with the pink cam and a 30cc on back. Some guys say I should do it the other way? I figgured having it on the primary will give me better 0-60s.. what do u think?
Hey Unc..Please look into this. I think something is different on the new Holleys. I am not the first to see this. Brand new Holley 670 Street Avenger. If I set it for 1.5 turns out, my eyes bleed from fuel odor. No kidding, I had to wear a respirator to be under there. Final setting ? A small hair past a half turn from fully closed. I am not the first to see this. Scares me I am too lean at idle but any more, you can really smell fuel. Any thoughts ?
Tony! can I get some of that beef jerky? LoL!!
Dang unc did you piss the bed? Why you up so early?
I adjust my float level by adding more fiber 😂🤣😂
aw, man! I got something out of that alright.... A headache to go with dinner^____^ No, love the carburetor "schtuff" as that's what I have on me oldies! See they're not scary things(carbs) people! THANK YOU!!! UT, UK!
💴💴💴💴💴💴💴💴💴💴💴 Do you ever use Marvels mMystery Oil?💴💴💴💴💴💴💴💴💴
Maybe once or twice like 30 years ago
Uncle Tony's Garage sure has been a good product to me with carb’d engines that runs only a few times a year. And works as a fuel stabilizer👍🏼👍🏼
I get lots of laughter and smirks when I open my hood at the gas station with a screwdriver and vacuum guage in hand. Seems like I'm always searching for that perfect tune
Getting the one adjusted on my 76 ford w351 in my old fiberform boat
I one time had a young guy come by the house with a small block Chevy that backfired so bad that the whole plenum was black. I adjusted the pump and he thought I was a god.
Very well done, probably one of the best basic descriptions I have seen.
I love the Holley carburetors!!! Waiting to hear about fine tuning.
Tony, I rebuilt my 302 in my 70 mustang mach 1, bored block .60 mild cam, long tube headers, and swapped the stock 2 bbl intake and carb with a dual plane high-rise and a Holley 4160, the cable throttle linkage is 2 to 3 inches short now, do they make a linkage kit for that or just add to the cable the best you can?
You are the Man. Not only you have the knowledge, you can also transmit it. I was wandering if you could help me with a question please. I am now 67 years old, and in my younger days I use to work on cars. Recently I have changed a 1986 Automatic Full size Bronco 351 Cleveland rebuild and with no many miles on it, from dedicated "LPG", back to Petrol, ( or what you guys in the States call "GAS", I live in Australia by the way). I fitted a 600 Holley Vacuum secondary which I had put it together at least 20 years ago. It starts at first go and idle to perfection and smooth, but I smell fuel vapour at starting, more like an exhaust fumes like, even in the engine bay. Accelerates smooth and quick .I changed the" MSD" mechanical advance bush into the blue , All up I have 32 degrees advance with 11/12 basic. the bush for LPG I had to make it myself because it didn't existed in the distributer kit , etc. .Once on the road I'll have to finally tune the through out springs, to suit the mechanical advance. Question is... : way it smells so reach??,. adjusted "carter" electric fuel pressure to 6 PSI with cold temperature anther the bonnet and engine . Fuel pump should start together with the starter motor solenoid at firs ( because of the safety switch installed), but, because it is/was only a Sunday car, or just to go bush, when I rebuild the engine I fitted a secondary oil pick up, Just a tube like, just off the inside bottom of the oil sump) in other to pressurize the block before occasionally start it, and what it does, it starts the fuel pump a bit prematurely, maybe coursing a rich condition???. I didn't had this problem with "LPG". Or I am imaging thinks???? So I dropped the Fuel pump pressure to 5 and a 1/4 "PSI" , I will restart the truck tomorrow in day time.. " too late now". Will like to see if the enrichment is gone, but a good needle and seat valve and good float adjusted (as "I THINK" they are???), should stop extra fuel passing needle and seat, unless the "O" rings are flatted???? . The carburetor was kipped in a seal plastic box, and when started first time two days ago, the throttle plate leaked a drop or two only, out of the secondary side plate shaft, (and no more now),near the secondary vacuum unit. I hope I gave you enough description, I know is never enough. You response and opinion at your time, is very much appreciated. Kind Regards... "COS".
tony...best thanksgiving wishes to you and kathy, your family and friends. and good fortune and continued progression for you and your new channel...you know you are always welcome at my table........kutgw.
So I let someone talk me into putting a Holley 750 on my 318 , mild cam, pistons 30 over. Never got response I hoped for..so..just installed Holley 600 double pumper, vacuum secondary.. anyway, can't get idle down. Vacuum hoses are good, 600 hooked up exactly like 750 was..is it possible my timing is the issue?. I didn't want to mess with factory settings yet
THE SIZING OF THIS DESIGNED PART is everything,just like sizing the cam for the use,this carburetor has been masterminded since 1970,me, is use the 350 500 cfm two barrels for all of my needs,for drag racing and top end speed,its a proven track winner, LINDSAY proved two of them were even better than mechanical fuel injection on the fastest SUPERBIRD in the world on the bonneville salt flats,carburetors are superior for total all out fuel flow,it was a normally aspirated and damn impressive hemi,they function pretty good on blowers too
Interesting information Uncle Tony, although the Holley Manuals can be jam packed full of Carburettor goodness, they can be a little vague at times. Wholly, I think the eagerness young blokes can be at fault here wanting bolton power - fit and forget so to speak - and wonder why they run into trouble for rushing a job they needed to take their time with. I believe the mystery of Holley Carburettor tuning is solved, so it makes more sense now. I did see and read an article last year where a double pumper was modified for street/bracket racing for aesthetics, power, metering and airflow, which was very interesting indeed. Thankyou for sharing this, Cheers :-)
I like others appreciate your expertise and explanation. I am working on a 1974 ford bronco with a Holley truck avenger 670 carb. It’s been rich the whole time I had it. I think you helped and it’s way better but it’s too many cfms for a 351 Windsor. Will it still be too rich? Do I need to downsize my carb?
just what i needed... 71 mustang 408 stroker, quickfuel SS 750 holley carb running rich and fouling plugs.. i will try to tune again before messing with internal jets, which I have never done, reco on the jets has been come down two step... i hope i don't have to do that after watching this video!! thanks, bro!!
Hi Uncle! New subscriber and frequent visitor to your Channel. Does it make a difference if I have a Holly 4160 # 3310-8 750 cfm? I need to do more research on all the particulars of this carb. Came on the car, 460 BBF mild build, MSD billet mechanical advance. Thanks. Cheers from Motown!
Missed powervalve. If you know how much manifold vacuum your engine produces before ordering carb you can get pv installed. If not stock carb come with 6.5 hg pv. Good for 13 hg maifold vac. I have 425 hp cam large lift large duration low manifold vac (10 hg) the math is manifold vac ÷2= pv size. Ex. 10 hg manifold vac 10 ÷2= 5.0 hg power valve
My 800 DP manual tells me to use some Folded Wire to shove into the idle orifice if the idle is "off". So I did that. Idle vacuum is 6 so I use a 4 powervalve. 72-76 mainjets , 50cc pump,.... But a 650 pulls much better below 6500 rpm, the 800 makes 50hp or more above 6500
The carb shown is a single pump spread bore
Hey Im rebuilding my Pontiac 400, its being bored to 60 over, Ive been told the size of carb is 1.5 times the C.I. of the engine which in this case should be 690 correct? Which would be about 700 cfm carb?
PS watch all your vids really help while Im rebuilding. Thakns
DR
I have a holley carb that doesnt have any float adjustments nor does it have air idle adjustments on the rear side of the carb.. i was told the carb was blue printed ..but my truck bogs down badly when i flore it . On the front top lip of the carb says
1763
List-6210
The float adjustments are sealed off ..can anyone help me on how to adjust this holley with these issues to the carb
Hey uncle tony ! Can u do a video on "vacuum"???? What is it? Why do u need it? Whats "vacuum secondaries"? Why some cars run wipers n headlights off of it?? Why do some guys jus stick a bolt in a vacuum line to block it off n send it down the road??? Ur expertise n explanation would sure be helpful to many i assume! Also, more content for u would be "exhaust back pressure" do u need it n why?? Many have wayyy different opinions! Btw- subbed from day 1 ,love ur vids n im also from the days of racing at "fountain ave" and "franny lew" NY in late 70's (i was a kid riding w older brother n friends)and 80's (started drivin)!!! Keep up the good work droppin ur knowledge n i wish good things for you and yours!
Does anyone know what size holley 2bbl was on a 1975 dodge ram pickup. I have a holley R 7088 A carb but I need to know the CFM of it. I can't find it anywhere and calling Holley might as well call uncle tony himself...:_)
@uncle Tony's Garage Hi!!! Sorry for my bad english!!! I have a holley 650 on a 454 and its running too ''rich''. It smells gas when it runs idle and if i rev it, it will puff blueish smoke. Where should i look 1st? Tyvm
I'm building a Jeep rock crawler with a mild rebuilt AMC 304. Edelbrock got me stranded on camber trails every chances he had. I got my hand on a Holley Truck Avenger do you have any recommendations since the engine sits at a 5 to 10° backward angle to align with drivetrain.
Awesome video! helped me out lots did have one question. I can’t get my float setting lower then 3/4 up the glass on the secondary’s on my Holley 770 avenger. I’m pretty much maxed out where the adjuster nut is just grabbing the needle an seat valve. Any suggestions?
Tony I have a question. There’s a 1966 Chrysler 300 with the 383 4 door. A/C asking 3600
I don’t have to much information on it. But the pictures look clean and tons of new parts. What would you pay for it?
Would this process be similar for a 4bbl used on 70s MOPAR 383 cars?
Uncle Tony. I need your advice. I have a new holley 670 cfm vacuum secondary with electric choke. my question is, what should the cold start RPM be? mine starts at 2600 RPM and seems a bit high. I have looked around and the closest info I find is it should idle around 1500 RPM. I have an automatic, so does it mean in gear or neutral? Can you make a video on cold starting tuning with electric choke please?
I have a Holley 3810 4b. 67 Vette won’t hold idol and stalls. However sometimes it does hold idol. How often should I change my fuel filter on the primary side. Thanks
Regarding dual quad setup (specifically for progressive linkage), is there a rule of thumb for putting dual carbs on a fresh engine (assuming the heads and cam/valvetrain can flow it)? Do you set both carbs up at 80% tune from the start, or do you tune and work on the primary before the secondary? Just looking for a high level understanding based on the content you shared with us in this video. Thanks!
Generally speaking, you need to jet the carbs down when using in an 8bbl set-up. Example, 76's would be dropped down to 72's or so.
You treat the idle settings on both carbs equally, even on a progressive set-up, UNLESS you are using a dedicated "secondary carb" that does not have idle circuitry included. Example of that would be the factory front carb used on the Street Hemi
I'm trying to run one on a Nissan 280zx. Out of the box, idling lowest idle around 1800. I'm thinking vacuum leak somewhere...
Holy cow UT could have propped up his Mopar or No car status up by explaining that Chrysler was the first to use a downdraft float carb on a production vehicle in 1929. Guess who Carl Breer it's designer was employed by?? Non other than Holley.