HOW TO: MAKE SBC POWER WITH BASIC BOLT ONS (305, 327 & 350)
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- เผยแพร่เมื่อ 21 พ.ย. 2024
- HOW DO YOU INCREASE THE POWER OF ANY SBC WITH BOLT ONS? CAN YOU ADD POWER TO YOUR 305, 327 OR 350 SMALL BLOCK CHEVY WITH PERFORMANCE HEADS, CAMS AND INTAKES (CARB AND HEADERS TOO)? SURE, EVERY SBC RESPONDS TO IMPROVEMENTS IN FLOW FROM BASIC BOLTS, AND HERE ARE THREE PERFECT EXAMPLES OF WHAT HAPPENS WHEN YOU ADD BOLTS TO YOUR SMALL BLOCK. THE GREAT THING ABOUT SMALL BLOCK PERFORMANCE IS THAT THERE IS SO MUCH TO CHOOSE FROM, AND COMPONENTS TO FIT EVERY POWER NEED AND BUDGET. FULL DYNO RESULTS AS ALWAYS!
305 is a great street motor. Thanks for showing us that.
I built a similar engine but more budget oriented..LG4 305 ,L31 vortec heads,mild port/clean up and LS6 beehive springs ,edlebrock rpm intake,L-82 cam,holley 650 dp,hooker headers....
what a night and day difference....stcok was a turd,after it blows the tires off,revs faster and about 750 rpm higher red line.
@@trillrifaxegrindor4411 how much HP was it pushing ? And what trans and diff were you running ?
This man is living the life I want to live!
IMO sbc is the most important engine ever made. Also my favorite and choice over anything else. No school like old school just the sound, smell and feel of a good sbc is like prom night for a virgin lmao!
Sbc is the most overrated engine in all time.
@@Dylan-tk1nf then why are you watching a video on them?
@@tristanabell2117 you can automatically tell he's a FORD fan but that is exactly why all FORD's are Found On Road Dead and in order to escape that you have to Fix Or Repair them Daily 😂😆 Coyote fan boy's are a trip I would put any Chevrolet engine against any Ford engine any day and I can probably build two or three Chevy engines to his one Ford engine
@@keefespencer1173 sbc heads are trash its probably the only motor you can afford to build that's why you like it
@@keefespencer1173 Chevrolet. Cracked head every valve rattles oil leaks every time
I would love for you to do identical 302/305/307 engines with TFS as cast 175 heads and hydraulic roller and roller rockers. I think it would surprise a lot of people. They are sbc and will all respond about the same. Different bore/stroke ratios. And don’t go crazy on the cam specs. These should be street friendly easy to drive with a standard shift.
Thank you so much for your time in putting this list together for us. It made me think twice before putting a big block chevy in my 68 Camaro.
WOW, some serious gains there, 100 hp gains is nothing to joke about. I will be 66 in December and when i was barely 16 someone a few streets over got a 64 Chevelle and he dropped in a nice 327/365 then put on headers and a Torker with a 780, back then AL heads werent even a dream except i think the L-88? That little 327 would run strong and yes rev high and he had 411 gears so i think it would have been in the 13's? You're 327 modern upgrades added an extra 100 hp so that will definitely be felt and seen in times and MPH. I had a 67 Camaro and dropped in a 427/425 so your little 327 bested that easily.
Richard, do you remember Chevy used to sell late 60's/early 70's what they called ANGLE PLUG HEADS? Supposedly the idea was to use with at least 11 to 1 comp. or more and helped with flame travel over such huge piston domes? Do you know if they ever worked better that the straight plug 202's?
Hello, good comment. Just a reply, the AFR L98 heads are considered Angle plug heads.
@@genuineapbt6690 Thanks for the reply, since those AFR L98 heads are modern day i guess there is substance to what might have been theory or almost an experiment in 1969.
I pieced together my buddy's .040 305 with stock 58cc heads, ram horn manifolds and a holley contender dual plane intake, 600 cfm holley and a .450/.455 crane cam, I forget the duration, but it's a mean little sbc. That 305 coupled to a TH350C and thrown in a little 65 Stude 4 door burns rubber down the street and kicks the car sideways when it shifts from first to second all while keeping you planted in the seat.
It might have sounded cool but was still making no power.
Really enjoyed this I have an le9 305 in my 85c10 and honestly that has been a great motor. Mated to a th350C and 3:42 rear I've done a lot of pulling with it and the power is great. Planned on cam and intake to buy time for the ls swap (6.0/6.2) and 4l80 but something about that little le9 just makes me love it. Think specs is like 220hp 230tq so no slouch
You should build " The 350 Chevy Should've built" 400 block bored over .30 and destroke it with 327 crankshaft. Comes out to be a 352. There's an old article on the whole build includes all parts.
Get the faster revs from the shorter strokes but retain torque cause of the bigger cylinders. Probably very well balanced from a power perspective.
@@iDrive4fun93 heck yuh....one helleva engine if u ask me
Had a 327 bored 60 over with some double hump heads. Solid lift camshaft in a 70 chevelle Malibu. And man that thing would Rev. It sounded like a big block stroker coming down the road.
Ive got a buick 350 im pulling in place for a 5.3 got a plan for the thing happy to see people still talking small blocks
The 327 made more power especially past 5600. Impressive! My dad still talks about how his 327 would pull past the 350s since he could wait to shift at 7000. I guess it was not all BS
A 327 MAKES LESS POWER THAN A 350
@@richardholdener1727 NOT IF THAT 327 REVS 1000 OR 1500 MORE .
@@richardholdener1727 HOWS THAT 327 SBC MAKING 460+ HP STACK UP AGAINST SOME OF YOUR 5.3 LS BUILDS ? BACK IN THE DAY, WE HAD 600 HP 327 SBC's AT THE TRACK. WITH SOLID CAMS AND TUNNEL RAMS !
Hate to burst the bubble but your dad was telling you BS.
I would still REALLY like to see someone take a 110 HP Olds 260 and do some custom work to it just to see how much it can make. I had one in my 76 Skylark sedan and it only had 34k miles on it with a Rochester 2bbl and even when it was in the negatives with a foot of snow on the car, you'd pump the gas twice, turn the key, and it would fire up on the 2nd rotation. That was one of my most reliable cars that I've ever owned and it was given to me. I could get it up to 80 on the Turnpike and it would just cruise. It took a while to get to 80, but it'd do it. It also had ice cold air conditioning and it would heat you out in the winter.
@@davesmith9684 apples to grapefruits?! Hes not comparing it to anything else, just intrigued on what kind of power can be had from the combo. Small cube engines are the craze today in trying to make the "best" specific output out of a combo. I have 60s and 70s vehicles that run reliably at highway speeds. Ymmv
@@davesmith9684 won't run reliably at hwy speeds? I hate to break it to you, but they run just fine.
I'm still waiting for someone to do a 69-70 Pontiac Trans Am series 303 I've been looking for one for years but only a handful were made and most of the Pontiac Trans Am series cars from the early 70's were destroyed.
@@kennethrand1032 I have a 403 6.6L olds in my 78 El camino. Fantastic engines
@@madmod 303 but yes I like the 403 olds big bore short stroke with a good set of heads they haul ass
Another awesome video, years ago I had a gmzz4 in a short bed 2wd chevy s10 holy cow that truck was fun
Richard can you do a video on what I think was a junkyard 350 with the vortex heads the comp 268 cam I believe it was the 400hp with 400ft lbs as low as 3k ram. I built that exact motor build but new short block and roller rockers. I can tell you that that was a very very strong 100k drive everyday motor I loved it. It would run low 12's and we drove it everyday for years. Me and my wife put it in a 84 ss Monte carlo.
Somebody told me long ago....an engine doesn't know what size it it, what parts it has inside, what brand or color it is, what planet it's on, what the brochure says it should do, what car it's going into, or what kind of fuel it's ingesting or if a power adder is connected. It does know at this exact moment I can do this with that. More fuel = more power, if the airflow is better, more power, if the exhaust is better more power, if ignition can ignite the fuel at that moment in time, it will continue to run near peak potential ect. That somebody was Jim Kinsler, Kinsler Fuel Injection, Troy Michigan 1983. A very interesting and smart guy for sure.
Someone clueless told you wrong
@@SOLDOZER Well lets see. KFI has a long and well established reputation in the performance business. I have actually been there, and these folks are NO JOKE! Your resume...." #@#*^ crickets".
If you would like to refute the opinion I referred to, feel free. I imagine you will create a whole new definition of FACE PLANT. I know who I will spend my performance $$$$ with...and it aint YOU. Money talks! Step up, have at it, or STFU.
I'd love to see. 305, true flat tops no valve reliefs, stock 906 vortecs, 9.5 to 1 compression and boost with a cam to tie it all together. Nice low budget detonation resistant build
Or even better all the above with a 3.75" stroke crank. Seen some stroked lb9 back in the day running a procharger with old super 23 trick flow heads, with no valve reliefs and small bore it ran way better than most think it could, and on pump gas. Efi, or a simple blow through setup would be killer. Best part is nobody beats on a 305 so good low mileage used cores are everywhere and cheap.
I built a similar engine..LG4 305 ,L31 vortec heads,mild port/clean up and LS6 springs ,edlebrock rpm intake,L-82 cam,holley 650 dp,hooker headers....
no boost but damn,what a night and day difference....
How much do you think someone would charge for this
My cousin's 305 non stock wild build not sure the specs 78 Monte Carlo ran low 12's in the quarter mile. I have a 1994 S10 with a 355 stock heads,shorty headers,rpm intake,600 edelbrock carb, rv cam. Runs pretty good. I would love a set of vortex heads,air gap,big mutha thumper cam,750 holley,and 383 kit. But that's on the wish list! I love your videos! Such a smart guy!
No such thing as Vortex heads.
@@SOLDOZER97 chevy pick up truck had a 305 vortec in it
I was so set on a 350 or LS swap for my camaro but watching your videos gives me a lot of faith in my ol' 305
By time you buy the Trick Flow heads, you could buy a 350. Sure, it’s possible to make power with a 305, but the same parts on a 350 make a lot more.
I had really bad luck with my 305's. Scattered bits all over the highway with .010 over and Summit 420/442 lift cam. 💥 It could have been a bad build, or it could have been pushed too hard. But thin cylinder walls on the 305 make for a short lived engine.
@@mcss327 I've never heard of a 305 having thin cylinder walls
I built a similar engine in my 86 firebird..LG4 305 ,L31 vortec heads,mild port/clean up and LS6 springs ,edlebrock rpm intake,L-82 cam,holley 650 dp,hooker headers....
no boost but damn,what a night and day difference....the 100 extra horsepower is fun
Old school simple mods gotta love it!
Would be cool if you could make a video of bolt on performance for a 5.7 mercruiser (350 SBC). For all the boat people like me.
Got one now waiting on the rest of the drive train parts to bust her off. Scat forged 3.75" crank and 6.0" rods,wiseco pistons, brodix 210 ik heads,comp/speedway motors solid lift 264° x 270° @.050 with a .585" lift cam. Comp roller rockers, comp push rods. Weiand team G intake with a brawler 850 carb.We ready to make some serious SBC power.
I've tried bunch of cams for 350s and The absolute best budget mild to med street cam is the Howards hyd flat tappet "max torque" 112031-08, it's .480/.480 - 232°\232° with a 108 lsa, very broad power band good low rpm Tq and nice top end pull and a sweet rough idle, power brakes with no auxiliary vacuum cannister and not optimal but you can get by with an stock converter or little better a v6 converter but a few hundred over stock would be best. A 2500 rpm stall was deff not necessary.
WE USED TO RUN A 10.5 TO 1, 355 , EDELBROCK RPM .488 / .510 LIFT. CAM, TRICKFLOW 195 23 DEGREE HEADS, AN EDELBROCK RPM INTAKE PORT MATCHED TO HEADS WITH A EDELBROCK 750 CARB . MAN DID SHE PULL HARD , SHIFT AT 7000 RPM . 5 SPEED AND 3.73 GEARS
I have a 400 and it's really hard not to make power. It's fun.
The 400 sbc is pretty awesome
Always wanted to destroke one. Shame they have siamesed bores.
@@imalec no reason to destroke. Whatever you gain in revs, you give up in torque. Siamese bores don't matter.
What cam did you go with?
Yea we have a 400 in our C20. I finally got a good built TH400, so now we can put good cam and heads on and should be pretty healthy truck. Already has a new Edelbrock carburetor and intake so it runs decent as is.
Nothing wrong with a healthy 305. Hell even David freiburger loved that one they pitched a ring with nitrous. Made like 350hp with vortec heads.
That was one of my favorite episodes, I love 305s and that would be a nice street engine to bang around town and if you gapped it for nitrous you would definitely hurt some feelings
I do agree with that statement on the 305. TOO many dummies were putting 112 to 114 lca 350 cams in the 305, which is why they ran horrible. The 305 needed a better head and cams that were 110 lca.
@@jasonhuffman7183 what episode is it?
@@CarGuyV8 honestly not sure I'll go check and see
@@CarGuyV8 th-cam.com/video/AScojLj139A/w-d-xo.html
I had a 267 in a 81 Impala. Lost two cam lobes so I installed the Melling MC-1 rv cam with a new timing set then I chopped off the cat and installed a 40 series flowmaster muffler. It wasn't fast but it sounded good and would cruse at 80 without and issues. The 305 is far cry better engine than that 267 was. Only good thing about a 267 is that they won't die no matter how hard you run one.
Cause they don't make enough power to hurt themselves.low stress engine
Loved my 305. With 601 heads and appropriate mods it ran really strong.
I built a similar engine..LG4 305 ,L31 vortec heads,mild port/clean up and LS6 springs ,edlebrock rpm intake,L-82 cam,holley 650 dp,hooker headers....
no boost but damn,what a night and day difference....
It might "run strong" but was still slow as mud.
I love these types of videos! Always a pleasure to watch 👍
You should do a Jeep 4.0l and do a comparison of low end torque between it and the big three small blocks.
Thanks for the small block video man! Most of my questions answered right here 😂
Great Video old school rocks!! love to see 350 11 to 1 compression, afr heads or brodix or Dart platinum heads rpm and or good brand name single plane and wild hydraulic or solid flat tapper lifters.. then some nitrous…. thanks
Can you do a 5.0 Challenge
1. FORD 302
2. CHEVY 305
3. OLDS 307
4. DODGE 318
5. Pontiac 301, 303
6. AMC 304
the ford vs chevy is already up
Have you done a 400 SBC stock vs performance comparison yet? Thank you for the content!
I HAVE SOME 400 VIDS UP
New idea for a series of tests: Going down the page in the Comp Cams catalog.
Run even increments of effective intake duration. Start with 200, then 208, 216, 224, and 232. All on the same engine, so people can see how longer duration increases rpm where peak power is made. My impression is that every 8 degrees in duration increase moves rpm up 400 rpm. 50 rpm per degree?
I DOUBT IT'S THAT CONSISTENT-SOUNDS LIKE A LOT OF CAM SWAPS
@@richardholdener1727 I wouldn't be upset if it wasn't that consistent. I was hypothesizing. Let the test prove or disprove the hypothesis.
I have an 86 Pontiac Trans Am with a 305 Vortec heads and a stealth ram with a custom cam grind I designed and I make over 300hp at the wheels
I built a similar engine and have the same car,same year.lol..
..LG4 305 ,L31 vortec heads,mild port/clean up and LS6 springs ,edlebrock rpm intake,L-82 cam,holley 650 dp,hooker headers....
no tpi but damn,what a night and day difference....
No you do not.
@@SOLDOZER okay unlike your generation of morons I don't have to prove shit because my White 86 Pontiac Trans Am sits in my driveway and on days I feel froggy I go jump the throttle and have a blast. While you get to drive your mom's Prius!
@@SOLDOZER but it's easy for simple people to think you can't get power from a 305. It's like those morons that say you can't grab a hundred dollar bill off their dad's dash during a launch. It's all bullshit if you don't believe me David Freiburger did it on engine masters building a 305 with 360 HP and it went to 600+ horsepower
Screw the 305. I once had a 327 from a Chevy Impala, I had it bored out .30, camel hump
heads, 10.5 compression pistons, ported heads bigger than stock cam, Edelbrock Torker
intake, Holley 600 carb, headers, I could rev it to 7,000 rpm with a hydraulic cam without
floating any valves, I never had it dyno tested, but I would say that it put out at least
375 hp. I beat on it for 8 years before one of the 2 bolt mains on the crank gave out.
Used a Mallory Unilite ignition, had an M20 4 speed tranny, so I still got decent gas
mileage.
Bolt on’s for any engine (especially heads)are understandable because they’re easy. I’d love to see some 292 turbo heads prepared Bill Jenkins style or Bob Glidden’s high port Cleveland heads ran on the dyno.
good luck finding them
@@davelewis2174 I get that, but someone’s got to have something built the same way out there.
Ha I just put together a 350 similar to your final 350. Same cam, 70cc 165cc runner Summit cast iron heads, wound up 9:1 and plan to run a 144 B&M on it. 2500 stall with that cam should be good, yeah? Figured a good candidate for 5-6 psi.
I would like to see the xe 274 comp cam run on the 350 combo. I'm curious to what the power curve would look like.
I'd like to see a head comparison for the 305 with stock 305 vs stock 350 vortec heads
big difference.i did it
Personally, I've grown up with month after month year after year seeing nothing but Chevy articles. It got to the point of what can you learn continuing to read the same stuff over and over. I guess it's the no brains syndrome these later generations past the 60's have. Everything is easy for everyone. It's called 1-800-send me one.
But it won't change ever. The difference really, what you're made of. No effort, or be a thinking man. A real challenge is out running them. A lot of work but that's the way the old guys did everything. It was really fun to be successful with using your brain.
Don't need to today. BIg WHOP.
please see the 300-400 other (than Chevy) videos that are up
the same shit applies to all engines ,the others just cost more....
Step 1... Heads, cam and intake.
Step 2... Boost
Step 3... Replace rear tires
get wider tires then they stop spinning'
you dont have enough power.
back to step 1....
@@KingJT80 🤣🤣🤣🤣yep
@@eracingregal if you don't have enough power to spin the tires at freeway speed then you need more power
If you spin the tires at freeway speed get bigger tires
🤣😂 Have at it
@@KingJT80 the truth is that we never have enough somebody is always faster🤣🤣
Richard can you do a shootout using the factory sbc intakes vs a few aftermarket? I’m curious how the z28 intake holds up. I know you’re the intake guru. Thanks buddy
The 305 runs pretty good in a certain wagon in division 6 otherwise known as the Wally collector 😁🥃
Rich, great video as always!!! I have a 69 big journal 327 that is in my 81 Camaro. It was a mild build with stock heads and a 650cfm Holley. Would love to duplicate this build of the 327.
What heads are these exactly?
A quick Google search came up with 033-1172 at Jegs but no corresponding number on the AFR website.
I assume these are far better than a Vortec style head, but is there any comparison to these heads and the cheap Chinese ones?
My ultimate plan is a solid lifter(or roller) 7000 rpm screamer, and I'm stuck in the planning stages for now.
Your videos are THE BEST, thank you for all the effort you put out there for all us gearheads!
THE AFR HEADS?
@@richardholdener1727 yes, part number would be great.
The 350 with the ported 882’s would be a blast with a 150 shot, super cheap street beater. 👍🏻
Or a 350 .030 over to a 355 with a set of double hump heads, with a decently big solid roller camshaft, forged pistons, and forged H-beam rods with a two stage progressive nitrous kit
This also goes with the question with the Holly heads I have Keith Black pistons flat top
How about a video on how tips for a tune port motor?
I would like to have seen that 350 combo with unported Vortec heads.
Thanks Richard! love your videos. I'm a big fan of the SBC. I'd LOVE to see a bolt-on 350 make 450hp with decent mid range torque. Is that possible? I'm planning on building one in the near future and I'd love the insight. Thank you for what you do!
YES
a decently prepped ,decked 350 with flat tops,a roller cam in the 0.480-0.525 lift range ,L31 vortec heads with LS6 beehive springs,edlebrock rpm intake ,long tubes and you are damn close to 400..easy,cheap,fun,dependable
Do everything in the video with the 350 block but do a legit roller rocker camshaft and you’ll definitely be at 450-500 hp range. Better flowing heads too for decent results too.
Sure would like to see those TFS heads on a 283 with a roller cam..
I got a 283 and 307 and 327 ,
The 307 is a 283 block with a 327 crank
The 302 ZZ Camaro is a 327 block with a 283 crank ,
I have two 327 , one small journal and one large journal , the large journal fits the 350 four bolt main block ,
My small journal has Double hump heads and makes 475hp , 11:1 Compression
Large journal makes 450hp has 12:1 compression
I wonder how similar it'd perform to the Gen II 4.3 "Baby LT1".
Which has decent heads (Stock), intake manifold, and a hydro-roller cam.
@@of_lion22 , I think the 4.3 is a V-6 , I have a 4.3
The V-8 is a 4.8
I also have a 5.7 with Vortex heads or 350 cubic inches
@@jimthomas777
Not the 4.3 V6.
The L99 Gen II LT1 derived 4.3 V8. Came in bubble body Caprices.
Richard has a few videos on it. Including flowing the stock heads, running LT1 heads, cam swaps.
And the 4.8 is a Gen 3 LS-derived V8.
Its interesting that the rpm intake made good power down low.
Have you done a edelbrock performer rpm heads cam shootout? See whats best roller cam on them and flat tappet
YOU DIDN'T MENTION THE SBC 400 !!! ONE OF THE BEST ENGINE'S CHEVY EVER MADE FOR REAL HORSE POWER FOR SMALL BLOCK ENGINES !!!!!
I clicked because of the lack of sbc 400 in the thumbnail and you are correct , my pa had a 400 in his le mans station wagon, 327 camelback heads , dual feed double pumper holly carb 650cfm, all back in the early 90’s. Man god damn block got 3 freeze plugs
You have to mod the heads is why he didn’t mention it
Not really the cylinder walls are very thin and easily overheated 383 stroker is much more dependable and good power gains unfortunately I had 2 400s and both cracked the cylinder wall at high rpm
It did have great power but everything has its limits
@@jimcatanzaro7808 It really depends on how much you bore out the cylinders . If you go nuts way out to 60 thousands then yes you'll crack the cylinder walls when you red line out the RPM's down the track . If you only bore the SB 400 to a maximum of 30 thousands or less they'll scream down the track or road without cracking the cylinder walls .
@@zakman9244 how old are you lol the 400 stock would break easy because the walls are thin to begin with why do you think the 400 didn’t last long in production
I was gifted a 305, everywhere I see it's, "the 305 is so bad" and the fact I was gifted one should probably speak volumes about the engine. But honestly I'm just happy I was given something to work and learn on.
I'd love to see what is possible with the 305s and not how much of a waste of time they are.
Learning is my primary objective on this block, and I think a free, near perfect condition 305 is perfect for that.
Thank you for the video, any more on this subject would be most appreciated!
it is a small block chevy v8-which means it is good and has potential
@@richardholdener1727 that's what I was seeing, and that the only issues they had was the cam giving out, well I figured since I was learning I'd upgrade this and build something that is nearly indestructible, and sounds magnificent.
305 are all cork up can't breath get some air going thru it you will be surprized
527hp Gladiator 350 is my favorite SBC build.
Come on Richard.......... feed us 400sbc guy's. We are keen on your magic
I HAVE 400 SBC VIDS UP-JUST NOT WITH A STOCK BLOCK
@@richardholdener1727 cheers Richard, live in New Zealand, not alot of 400 info
@@richardholdener1727 are you located in bayarea or northern california?
One HUGE question what about the 400 SBC?
awsome video. what is your opinion on the throttle body spacer for a 350 tbi. i see a lot of mixed reviews and was wondering what you thought about them. thank you!
i doubt they add any sizable power
I like the power the 350 made. What octane fuel did you use and what was the compression ratio?
91
Put a waterpump on a L31 Vortec 350 in landscapers trucks, had 380,000+ miles on it on Friday, original engine ran good still, the ol' mouse is a pretty good engine.
Those have 350hp stock they're excellent engines
@@jonathanlawson4667 AHH 260hp great engine easy to make 350 with a carb
I had a 1987 305 h.o roller cam and my memory might be off a lil but i do remember it having about 320 horsepower stock out the factory. I did purchas a 480/ 480 230duration cam from comp cam set of lifters to match the cam also comp brand... 2 1/2 inch long tube trick flow , 680cc holler carb Msd high voltage Distributor...25 percent high volume oil pump and a Holly fuel pump 20%more fuel flow . We got 365 hp on the dyno. Could have squeezed more out of her . One of my regrets 😔 never got to turbo her. Would have been interesting to see her over 400 hp... oh yea my block also cam with the 58cc chamber heads . Don't know if that would have made any difference.
THE HO 305 L69 WAS RATED AT 190 HP
320HP? LOLOL not even close
See...that's a nice street engine. Great for a nice old Cruiser/Hot-rod.
People want too much HP with no where to use it.
Yeah factory cars pushing 800hp these days lol here I am with a 480hp 91 camaro having to hit it with a 200 shot just to get passed 600hp lol
@@jonathanlawson4667 those higher hp new cars are also porkers. 800hp doesn't translate the same when it has an extra 1000lbs to move.
@@lb9gta307 yeah I know with a 200 shot I run a little faster 1/8th mile times than a hellcat and quite a bit faster in the quarter
Thanks Richard. Had about 5 Lt1 Cars. They respond well to bolt ons. Could you do a 1969 or 1970 350 dyno pull. the Motors have a little more compression, the Heads use the r44 plugs 350-300hp. Just Curious to see the Numbers. Thanks
I HAVE A 1970 LT-1 VIDEO UP
@@richardholdener1727 Yes I saw that Thanks. any 69-70 350-300hp Dyno pulls?
Do you have any more info on the holley heads? Chamber size? Runner size? Part number? Or even a comparable head from another manufacturer?
Richard do you by any chance have a parts list for the 305ci supercharger build you did a few years back? Including the inter cooler?
UNFORTUNATELY NOT-THE INTERCOOLER WAS PROCHARGER IF I RECALL
I notice you didn’t mention the “mighty” 307! 😁 I’m planning a similar 350 with 184cc runner aftermarket heads, Performer RPM and a 268H cam but I might have to stick with a 600 cam carb for a while. Do you think that will pose any issues?
Just as long as it don't lean it out up top you'll be fine but I'd say it atleast needs a minimum of a 680 carb to preform right
WILL BE FINE
Get a 650dp asap, my favourite sbc carb.👍
We have a 70 model 307 in my dads 71 C10 and it has headers and i just got a new bigger cam for it, still has the 2 barrel carb gotta get a 4 barrel, and ive been trying to figure out the best cold air intake system for these old small block chevy engines
@@edwardwood3622 OBVIOUSLY YOU NEVER HAD A QJET CARB PROPERLY REBUILT FOR PERFORMANCE. THEY ARE MORE RESPONSIVE AND GET TWICE THE MPG OF A DOUBLE PUMPER !
The 305 obviously cant fit the valves of a 4" bore. But if we compare power in terms of bore area and torque in terms of displacement its probably adequate for the era and when built for power would be respectable. Other than tbi heads the flow for valve area isnt that bad and the stock 302 heads werent always that good. The 305 might not be the brute force engine of choice but its not an inefficient engine and the heads are perfectly suited for 283 and 307 leftovers from the 1960's that could use compression and have a little less shrouding on the bores.
Yea i feel like too many thrash talk on the 305 a little too much just because that is the "norm"
I have a 305 tbi in my caprice and yes Its not fast but really you dont need more to get up to 50-55 (as most speedlimits or roadcontidions here in sweden allow) great on fuel also.
I mean pepole get like 200+ hp from an old Volvo 4 cylinder from the 70s so the 305 shouldn't be to hard to get above that. Its not a "small" engine as some people like to say. 5 L Is pretty big especially over here
So, the 327 made more HP than the 350….,? Interesting. Sometimes it’s harder to get a true picture when we don’t comparing apples to apples such as cams…..
My 305 has 320,000 miles on it, it's getting tired but I want to reward it with a refresh.
Great video
you ever thinking of doing a video on the 427,sbc,from mild to wild?
DO GUYS BUILD MILD 427 SMALL BLOCKS?-THEY HAVE A LOT OF CLEARANCE ISSUES AND REQUIRE AFTER MARKET BLOCKS
@@richardholdener1727 i wanted to build a 427 sbc for a motor to install in my gmc van for towing vs my 350 in it now.
@@harveynewman4333 massive dollars.....you need a dart block,special crank,big overbore
What about Vortec heads on all three ?
that works okay too
How do cast iron Sportsman 2 heads compare to newer heads?
I've often wondered what the real world difference is between them and newer heads.
I'm running a set on my 406 SBC that have been massaged by Pat Musi.
IF PAT DID THEM-THEY LIKELY WORK WELL
Searched through the comments and can't see AFR Head specs for the 327. Any chance you could post the specs or Part Number?
THEY WERE 195 HEADS
@@richardholdener1727 thank you !
THE AFR 180 TORQUE MONSTER HEADS WOULDA BEEN BETTER ON THE 327 , ADD MORE TORQUE AND HORSEPOWER.
Please add the old torqlink intake manifold to your next sbc dyno session
WE HAVE RUN THAT-NOT GREAT
Does it not work good any where
@@bloodhawk6252 no,use a performer or performer rpm....cheap,hundreds of them used
awesome comparison, cheers:)
I would love this exact series but with forged bottom end . Unless it doesn’t do much to the numbers
FORGED DOESN'T CHANGE POWER
@@richardholdener1727 stop yelling at me 🥺
all it does is make it more durable and allows you to spray it or boost it
Can someone make a detailed list of parts for the 305 I’m trying to build mine exactly how he has it but having trouble
Maybe a 305 shootout next time. LG4 vs LU5 vs L69 vs the other TBI 305s
Luv da video I have a 350 out of a 92 Buick roadmaster
I would like to build my 305 just because of the "just get a 350.
Nice vid…what cc holey heads did you run on the 350?
THEY ONLY MADE 1 SIZE WHEN WE DID THE TEST
I always wanted to build a 305 to set a record people would give them away and I had a machine shop at the time just no time to work on it but a ten second 305 is possible
I actually wouldnt mind finding myself a 80s camaro/trans am (preferably trans am) and doing the same top end upgrades to the little guy… yea the little 5.0 305 doesnt make killer hp but it sure would turn some heads when someone sees one built and not just swapped for a 350 or ls… yea engines these days make a ton of power but something about that old school hot rodding just pleases me… no one is doing it anymore and just going for the brain dead option…
I just restored my 91 camaro third gen but I pulled the 305 and ordered a 400hp 350 from summit racing and I'm happy with it
Yes people going out and buying these 800hp new cars and they talk shit to me because I restored my whole car and it's only got 400hp lol
@@jonathanlawson4667 but see with cars now a days there are so many computer assisted bs i bet if you put them behind your wheels they wouldnt be able to handle it
I built a similar engine..LG4 305 ,L31 vortec heads,mild port/clean up and LS6 springs ,edlebrock rpm intake,L-82 cam,holley 650 dp,hooker headers....
no boost but damn,what a night and day difference....86 trans am
So a 68 327 would be a good improvement over the stock 350 tbi in my 92 k2500 gotta be lol
YES-THOUGH NOT GREAT FOR TOWING
the 327 is higher revving,torque is moved up the rpm range..
you want vortec heads on your 350 and a decent roller cam...youll be over 375 horsepower if you went carb or a better efi throttlebody
Hey Richard, I thought the extreme energy cams were ground on a 110 split? On the screen it said 114.
I don't think every XE cam was 110-ill check
Can u give me the second combination u did on the 350.
Nitrous is a bolt on
I bet if gm had made the smaller than 350 engines shorter stroke instead of smaller bore they would be some awesome engines with the larger valves you'd be able to run.
the 327 and 302 were both shorter stroke 350s
@@richardholdener1727 the 327 and 302 having more bore space to run larger valves than what the 305 has can be why there is more love for them. The main complaint ive heard with the 305 is valve size limitations.
content so good its shocking we get it for *free*
What about setting up a test where we increase ring gap by .005 (or whatever number makes sense) per run and see what happens. Or have you already done that too? 😝
SINCE WE INCREASED RING GAP BY .030 AND SAW NO DIFFERENCE IN POWER, WHY DO IT IN MULTIPLE STEPS?
@@richardholdener1727 I mean above 30. Go to 35, then 40 and so on.
@@tomcelica why,more blow by? less compression ? whats the point?
@@trillrifaxegrindor4411 test to see when gap becomes an issue.
Fyi, only one 5.0 and it’s an AMC 💪🏻
What were the specs for the Holley head on the 350? Chamber, intake runner, compression, etc
IT'S NO LONGER AVAIL
@@richardholdener1727 oh, thats a bummer. Do you remember what the specs were to try to get something similar?
What do you think of the Holly system Max 2 heads you know you get the whole kit intake assorted bolts ARP stuff it was a really good kit on a fresh 383 40 over seems like it runs great I don't know what the dino says
those were decent heads-not AFR or TFS, but decent
Please do a small block Mopar video 318/340/360
What are my power adder options for my 305 TPI Mercruiser Engine in my boat?
not sure on tuning those
richard . how about a ford 2.9 v6
hell,big block chevys and ford,mopars use to tremble going against the little 327 ,more so than the 350..327 ruled !!!
Where did you guys find them Holley heads? I wish I never sd my old set back in the 90's.
tested long ago