Richard I gotta give you props most people don't know that little trick. that you did dropping in the distributor lined up on the gear it time then bump the starter over with a little push drops all the way in on a pump drive says in time. Always super impress How good you are at this. I think you have probably the best Scientistic An educational videos on horsepower thanks buddy.
Something definitely going on with the efi setup. This topic has been beat to death in the lt1 community for 20+ years. The difference is not that drastic.
I wouldn’t take any test as an end all be all for anything but every test is important because it adds more data to the pool and is good for comparing the different variables associated with each test. Richard has done a lot of good videos comparing fi and carbs, most end up with really close numbers!
I had pretty much the same setup on my 97 ta for a short while , and the difference was night and day. Idk if it was 100flb worth , but different for sure.
@Emilthehun I just can't see that lt1 intake making power until way up on rev range All the testing Richard does on other engines proves this yet old test suggests lt1 works well and hard to improve apon. Stealth ram has longer runners and you would think it kills lt1 intake
If the intake runner length is the same, and the cross section is the same. The engine will make the same power (horsepower) The short block is just a air pump.
All my friends told me to go LS swap.I said na I am good with this 408 sbc.Then they all said the swap to a sniper EFI setup or something similar.I said na I am good with this FST carburetor.I still bust their asses on the street.Lololol.Old fashion good tune.
Yea they recently came out with a Holley EFI single barrel modeled after the Autolite 1100 that my I6 Falcon has and I really want to experiment with it, but dang it if the carb doesn't just fire up perfectly every year with ethanol free gas and run fine off the tune I put a weekend into years ago.
Exactly. I got a free truck with 5.3 LS and was ready to swap it into my 68 and trash the truck body until I priced everything out for a 500 hp build and ended up staying with the 68s original small block and building it. Now I have a running driving 5.3 truck and still got my 500 horses impala. Win win. Ended up being a lot cheaper that way even with the LS itself being free lol. Nothing against LS swaps tho they’re really cool and I want to do one in something one day just for fun. Maybe an obs Chevy truck!
@@Onewheelordeal My friends with EFI they can start their cars up from a cold start and it will idel perfectly.My carburetor takes a min of warning up to get going.The EFI sniper 2 I was curious about but not $2000 curious.Also curious about e85 gas.e85 carburetor $700 ish + new fuel system if you don’t already have one is roughly $700-1000.I am still old school and like things simple that still work good.More mechanical less electrical.EFI my friends have is definitely easy self tune no doubt.Once I got my timing curve set right and got my carburetors nozzles,Jett’s,power valve,AFR set just right,I felt a lot easier to maintain.
Well I was right! Now I'm not sure if what I'm thinking is correct or not. That 100 lb-ft of torque difference down low was caused by the carburetor not having a plenum. My theory is that the plenum is slowing the air being pulled into the cylinder's at lower rpm's. Less air+less fuel=less power in the combustion process which is less power that the engine produces. Where as the carburetor doesn't have a problem pulling in a more significant amount of air fuel mixture at lower rpm's. Which is what the engine prefers having. Now I maybe wrong in my assessment of the provided information. Let me know what you think of my thoughts on this. Is there a way you can measure the air intake on the EFI system with the hat I know it can be done on the carburetor? That's the simplest way of checking if that's what it is.
I miss working on carbs but I do not miss warming up cars up here in chicago land lol my first carb cleaning and rebuild job was on a 1962 Volkswagen with a Manx dune buggy body bright orange with the largest metallic flake you’ve ever seen lol the air filter was a cup fillets with oil I think it was the 1600 beetle as well was geared for all acceleration only did 65mph screaming with the massive rear tires I think like 18-20” wide lol
Thank you Richard for the long waited test! As a stock config, the LT1 has got pretty compression ratio already and the heads flow better thanTPI L98's 113 stock heads do. As you have shown as previously, a dual plane carb combo tends to produce low to midrange torque way better than the mini-ram style fuel injection. Perhaps these could explain the >100ft lb difference in the test? Wouldn't you like to try to fit a TPI on this LT1 as a tryout?
Looks like the dual plane carbureted intake beats even the long runner TPI intake in the low and mid range. Wasn’t the outcome I expected but that is what the dyno is for.
Went back to see TUNE PORT TECH-L98 vs CARB th-cam.com/video/QazvSzZKj24/w-d-xo.htmlsi=QOOe3vCIYG6_uDeZ Seems the cam and heads match the old tune port set up..
Compaired to the older lts thats about the ballpark for a carb and some mods. But thats ehy most people go back to carbs over the tbi and at the time peak fuel injection.
IIRC the stock LT1 throttle body is kinda small (I want to say twin 52mm, which is roughly equivalent to a single 76mm). Maybe a bigger one would help with top end power?
@@sstevocamaro stock is 52mm with 4mm idle hole at 732 cfm that why there is 0 gain with 52mm BBK cant do it with automatic and car will use more fuel at lights intown driving I drilled idle hole to 1/8 from 4mm to 6.5 mm idle went to 1100 rpm TB is now 54.5 mm 807 cfm and goes higher in rpm than it did before my 97 was 561 heads stocker Fast now is Stupid Scary Fast took some getting used too knowing the biggest hold back was the tb and 58 BBK is a little to big for stocker lt1 lol
Have you ever compared vortec ports to lt1? Would vortec intake ports match? Then all you would have to do id drill the mounting holes. Then you could try several different intakes pro flo xt, stealth ram, etc
oversized pump shot lol 750vs 732 TB but I have to point out without cold air intake and Maf Sensor and Cpu its running on map sensor which is air Density and serious Handicap And still theres something wrong the down hill on rpm and tork is pointing out vac leak or something a big bog at 3000 rpm especially with 1st lt1 video showing 360 hp and 391 tork out of stock throttle body and tb just off the top of my head throttle position sensor is off so injectors arent getting signal maybe
@@richardholdener1727 Your right Rich. I was just trying to figure out why torq was down quite a bit compared to your 1st lt1 video where it was 360 hp and 391 tork but your down 200 hp and 100 torq at 3000 rpm at 310 hp 330 torq wonder if 1st vid was 30 over bore lol or if this one is smaller than 4 inch bore truck engine? You going to laugh but I just did test on stock 97 6 speed with stock performance exaust with 1 cat disintegrated you can drop rock through on one side lol 2 1/2 inch Y 4 1/2 inch single into Hooker Superformance muffler with 2 exit pipes . The test was drilling out idle air hole to 1/8 inch idle was 800 rpm with butterflies closed now its 1100 rpm idle which is livable in backed up traffic sitting still in jam but sucks more gas but increased power through out power band very notice able without dyno lol making what was 52 mm 732 cfm into 54 1/2 mm 807 cfm Throttle body. every body thinks I have LT4 . after creaming their LS1 or LS3 or 2014 LT1 lol But Their Heart stops When I show them Stock exaust manifolds and LT1 lol
@@richardholdener1727 map is a ball park ignition spark maf sensor with optispark and cpu is miles ahead of the Hei and map sensor you set timing and it is what it is The optispark would amaze you if you watched how fast and how far it throws in advance and when maf sensor fails it goes to map sensor back up and loses power in high rpms if you make knock sensors deaf with 4.3 capacitors to ground or tune them out the cars pull harder than ever before and Msd and distributor would melt out center coil carbon trying to keep up lol been there done that over and over for ten years in Blown Baha truck actually the failure of optispark was two plastic caps facing each other and dead ending the 2 vacs a simple notch cut at 6 oclock to match and let vacume do its job is easy fix lol I bet super ram would carry max Hp longer and farther it did on Lingenfelter cars. GM actually bought out mitsubishi to get optispark technology
Thanks so much for this vid. I run 2 95 firebirds in England, 1 stock efi auto, 1 carb 650cfm 6spd with headers. Never had them dynoed but the carb over efi difference is very noticeable. Is it possible your timing curve, lower down with the injectors is hurting your torque numbers? Can you get the timing in sooner with lighter springs? What rpm was your timing all in by?
@@richardholdener1727 LETS GOOO !! Would you be willing to do a dyno run with and without the air foil ? I’d love to see some proven results. I’ve only ever found an old notes chart from a forum where a guy supposedly tested the air foil, seeing an average gain of 5 hp, but never showed a dyno chart.
@@theredwedge9446 He lied He turned your TB into 48 mm when with idle air is 52 mm TB works just like SCCA 220 horse blocker plate take off cia and start the butterflies will be shut bock 4mm hole with pencil eraser it will stall rev it 2-3000 rpm and plug hole it will bog airfoil was invented by ford companies to steal lt1 power about 50 horse
I already know ya should have sent the lt1 intake an heads to lloyd elliot portworks lol i really wanna see ya do a lt1 throttle body size test 52mm dual compared to the 58mm dual compared to the big mono blades these motors need more love!
Hello from Romania 🇷🇴 I have a 1993 LT1, and i want to carb swap the engine. The engine is out, the old parts that i have or kind if really old and i want new ones. Tell me if this list is good ! GMPP intake Carburetor ( but what carb does this intake accepts ? The one that you are using in video is good ? I was thinking for a 600 cfm one. And i need one that allows the tv kicdown cable bracket for the transmission to shift. Any advice heare also is needed.) Hei distribuitor Starter Water pump Plugs and wires Radiator. What about the griund wires and what mecanical gauges should i use ? If i miss something help me out ! Or help me the corect list ! I allways watch your videos. Thanks !!!
@richardholdener1727 how much you sugest for a 5.7 L ? Because if you calculate the displacement it needs a 600 cfm, but i see you are using a 750 one !
Something is up. There is no way the lt1 intake should be sub 300 ft lbs at over 3000 rpm. If I recall torque peak on those were about 2400 rpm. Not only that but in the past you tested the lt1 vs the lm7 and there was less than 10 hp difference 355-365 hp on these from your previous testing
@@richardholdener1727 You can be kind of a clown sometimes. The tq I mentioned was a published figure from GM for early lt1's in f-bodies. This figure was suggested to show you your numbers look goofy. I have chassis dynoed my 94 when it was stock and saw table top tq from 2000-4500 rpm, as well as many others show the same characteristics in manual cars. Obviously those exact characteristics vary with headers, optimized timing, etc. Either way, the point is that peaks may vary but it's funny you focus on that rather than the general issue where your numbers seem off even compared to another stock lt1 you dynoed in the same configuration.
The intake probably is the biggest difference. Carb. Always makes a little more power on same intake. If u put a holly sniper on the carb intake the difference would be minimal saw it many times. Engine masters for one this comparison was like comparing apples to oranges. Lets see some different engines rich how about a boosted 3.6 LGX u can find them for around $500 now. Put some turbos on one do ring gap lets see how much boost one can take lol!!
Something is certainly wrong with the lt1 intake. I usually see them around 350-360hp and of course still less torque than that dual plane, but not that big of a difference.
So I have a 96 GMC 4 x 4 extended cab short bed I'm not 100% sure which transmission is in it but I've only gone from carburetor to EFI on stick shift models. Do I need a TCU to be able to run a carburetor,/ intake and distributor. I already have a cam for it and I've already put long tube headers on it any help would be great. Thank you
If its a 1500 or a heavy half you have the 4l60e. I don't think you need one. The stock computer should already be reading vacuum, throttle position, speed sensor and timing. I would check forums, has definitely already done it lol
Kinda funky, but not funky....I would expect the peak numbers to be close with a stock cam, so ok. I would expect the carb/duel plane to make more everywhere else, but in a more liner fashion from low to high RPM? Not that TPI looking hump down low... Is it just me or is this particular old LT1 a bit weak or no...guess we will find out.
The fact theres not a single aftermarket EFI intake for these LT1s is disappointing. My buddy has one making about 400 WHP in a Trans Am and it hooks and goes a-b. Funny watching 20-60k dollar "performance cars" get stomped by a 7k dollar Pontiac 😂.
TPIS makes or made EFI intakes for the gen2 LT1. They also make throttle bodies as large as one oval mono blade. I have the version with a distributor hole on a 91 Camaro. Good intake for a stick. It's definitely not a torque intake since it's just a taller version of the LT1 factory intake. I really want to try a FIRST intake to get the added torque. It a big port tuned port design. Not sure if they have a model for the LT1 though.
4 air bleeds not 2 per ventri. Mike, welcome to the 21st century. And that testing settles that. Guys, if your building a 500hp motor you cand have 32mpg
Never do that zoom after zoom intro ever again please it almost made me feel sick lol Just showing the slideshow is enough without the PowerPoint transition vibes
Crazy how in stock form with a real good tune they make almost as much hp as a stock 4.8 and almost as much torque as a stock 5.3. This is why I don't bother with sbc anymore
Crazy how stock pickup truck engines will outrun the end of run 30 year old Chevy based on a 70 year old design? Flathead, Oldsmobile and Cadillac OHV guys said the same thing about the SBC. People still build them. Hell, the 2.0 liter turbo mills today are same HP/More Torque than the LT1 in a Camaro. Surprise. All of them are better than walking.
Yea that’s true in stock form, but once you add heads to the LT1 it starts to walk away from those engines you mentioned. Those 5.3’s don’t respond well to aftermarket heads because the ci isn’t there.
Richard I gotta give you props most people don't know that little trick. that you did dropping in the distributor lined up on the gear it time then bump the starter over with a little push drops all the way in on a pump drive says in time. Always super impress How good you are at this. I think you have probably the best Scientistic An educational videos on horsepower thanks buddy.
Honestly I feel carbureted makes way more power because of the better intake manifold. So hyped for the next video !
I have the same setup in a 1986 GMC short bed
@@johnnyblackking169Carb Lt1 ? Nice.
Please do a video about drilling the fulie manifold for the distributor. Would like to see how you did it.
holesaw-not recommended
I'd love to see you run the torque head system I've got the set up with a terminator x but not in the project yet
Something definitely going on with the efi setup. This topic has been beat to death in the lt1 community for 20+ years. The difference is not that drastic.
I wouldn’t take any test as an end all be all for anything but every test is important because it adds more data to the pool and is good for comparing the different variables associated with each test. Richard has done a lot of good videos comparing fi and carbs, most end up with really close numbers!
I agree. If you look back at the video a few years ago, he ran an equivalent engine and it made wayyyy more power. Something’s definitely up.
I had pretty much the same setup on my 97 ta for a short while , and the difference was night and day. Idk if it was 100flb worth , but different for sure.
@Emilthehun I just can't see that lt1 intake making power until way up on rev range
All the testing Richard does on other engines proves this yet old test suggests lt1 works well and hard to improve apon. Stealth ram has longer runners and you would think it kills lt1 intake
@@CLEEPER1 the best lt1 intake is a stock one ported by Lloyd Elliott
If the intake runner length is the same, and the cross section is the same. The engine will make the same power (horsepower)
The short block is just a air pump.
the design is dramatically different
This thing is way down on power from the lt1 you tested 4 years ago. Any idea why?
I'm excited to see you doing some second gen lt1 stuff!
All my friends told me to go LS swap.I said na I am good with this 408 sbc.Then they all said the swap to a sniper EFI setup or something similar.I said na I am good with this FST carburetor.I still bust their asses on the street.Lololol.Old fashion good tune.
Yea they recently came out with a Holley EFI single barrel modeled after the Autolite 1100 that my I6 Falcon has and I really want to experiment with it, but dang it if the carb doesn't just fire up perfectly every year with ethanol free gas and run fine off the tune I put a weekend into years ago.
Another good thing is the SB2 5.8L heads fit the SBC, in 2007 the R07 engine came out
I would hope a larger displacement motor would make more power than a stock LS.
Exactly. I got a free truck with 5.3 LS and was ready to swap it into my 68 and trash the truck body until I priced everything out for a 500 hp build and ended up staying with the 68s original small block and building it. Now I have a running driving 5.3 truck and still got my 500 horses impala. Win win. Ended up being a lot cheaper that way even with the LS itself being free lol. Nothing against LS swaps tho they’re really cool and I want to do one in something one day just for fun. Maybe an obs Chevy truck!
@@Onewheelordeal My friends with EFI they can start their cars up from a cold start and it will idel perfectly.My carburetor takes a min of warning up to get going.The EFI sniper 2 I was curious about but not $2000 curious.Also curious about e85 gas.e85 carburetor $700 ish + new fuel system if you don’t already have one is roughly $700-1000.I am still old school and like things simple that still work good.More mechanical less electrical.EFI my friends have is definitely easy self tune no doubt.Once I got my timing curve set right and got my carburetors nozzles,Jett’s,power valve,AFR set just right,I felt a lot easier to maintain.
I say carbureted I don't know by how much, but I'm fairly certain it's coming out on top.
Well I was right! Now I'm not sure if what I'm thinking is correct or not. That 100 lb-ft of torque difference down low was caused by the carburetor not having a plenum. My theory is that the plenum is slowing the air being pulled into the cylinder's at lower rpm's. Less air+less fuel=less power in the combustion process which is less power that the engine produces. Where as the carburetor doesn't have a problem pulling in a more significant amount of air fuel mixture at lower rpm's. Which is what the engine prefers having. Now I maybe wrong in my assessment of the provided information. Let me know what you think of my thoughts on this. Is there a way you can measure the air intake on the EFI system with the hat I know it can be done on the carburetor? That's the simplest way of checking if that's what it is.
its not that
You need to do this test with a bigger cam shaft, maybee it will like the short runner with more rpm 👍
Stock intake vs aftermarket intake? What would a stock GM intake do? What about an aftermarket EFI intake?
this video already tested those two things
What about with a cam change?
that vid is up
Searched and don't see it.
Really cool test. I would love to see this exact test, on a magnum 5.9 or 5.2. Bone stock engine with keg intake and efi vs dual plane and carb
I have run that test
I miss working on carbs but I do not miss warming up cars up here in chicago land lol my first carb cleaning and rebuild job was on a 1962 Volkswagen with a Manx dune buggy body bright orange with the largest metallic flake you’ve ever seen lol the air filter was a cup fillets with oil I think it was the 1600 beetle as well was geared for all acceleration only did 65mph screaming with the massive rear tires I think like 18-20” wide lol
Thank you Richard for the long waited test! As a stock config, the LT1 has got pretty compression ratio already and the heads flow better thanTPI L98's 113 stock heads do. As you have shown as previously, a dual plane carb combo tends to produce low to midrange torque way better than the mini-ram style fuel injection. Perhaps these could explain the >100ft lb difference in the test?
Wouldn't you like to try to fit a TPI on this LT1 as a tryout?
I did that already on the L99
Looks like the dual plane carbureted intake beats even the long runner TPI intake in the low and mid range. Wasn’t the outcome I expected but that is what the dyno is for.
this is not a long runner TPI-it was a short runner LT1
Did a carb swap on 91 corvette, gained .6 in the 1/4
I would like some more information. I have a 95 impala ss
Likewise
Carbd intake is one of the best GM ever made. Big $ if you can find one
NEver liked the short runner of the factory EFI intakes.
Wow, huge difference seems like something is wrong with the efi set up..
Went back to see TUNE PORT TECH-L98 vs CARB th-cam.com/video/QazvSzZKj24/w-d-xo.htmlsi=QOOe3vCIYG6_uDeZ
Seems the cam and heads match the old tune port set up..
The LT1 heads are different than L98
Compaired to the older lts thats about the ballpark for a carb and some mods. But thats ehy most people go back to carbs over the tbi and at the time peak fuel injection.
Can't wait to see boost on this motor! I'm working on something similar.
IIRC the stock LT1 throttle body is kinda small (I want to say twin 52mm, which is roughly equivalent to a single 76mm). Maybe a bigger one would help with top end power?
we plan to test that later
nice
Stock is twin 48mm. 52mm is the next size up and the biggest one you can run on an unported intake
@@sstevocamaro stock is 52mm with 4mm idle hole
at 732 cfm
that why there is 0 gain with 52mm BBK
cant do it with automatic and car will use more fuel at lights intown driving
I drilled idle hole to 1/8 from 4mm to 6.5 mm idle went to 1100 rpm
TB is now 54.5 mm 807 cfm and goes higher in rpm than it did before
my 97 was 561 heads stocker Fast now is Stupid Scary Fast
took some getting used too
knowing the biggest hold back was the tb
and 58 BBK is a little to big for stocker lt1 lol
Respect & Thanks !
Have you ever compared vortec ports to lt1? Would vortec intake ports match? Then all you would have to do id drill the mounting holes. Then you could try several different intakes pro flo xt, stealth ram, etc
Vortec or almost any SBC ports line up-just the bolt pattern is different
@@richardholdener1727 so an intake for a vortec can be filled for lt1? I ask because I have access to a stealth ram
oversized pump shot lol 750vs 732 TB but I have to point out
without cold air intake and Maf Sensor and Cpu its running on map sensor
which is air Density and serious Handicap
And still theres something wrong the down hill on rpm and tork is pointing out vac leak or something a big bog at 3000 rpm especially with 1st lt1 video
showing 360 hp and 391 tork out of stock throttle body and tb
just off the top of my head throttle position sensor is off so injectors arent getting signal
maybe
tps is spot on-does not need a MAF (Map is not a serious handicap and is in fact a flow increase)
@@richardholdener1727 Your right Rich.
I was just trying to figure out why torq was down quite a bit compared
to your 1st lt1 video where it was 360 hp and 391 tork
but your down 200 hp and 100 torq at 3000 rpm at 310 hp 330 torq
wonder if 1st vid was 30 over bore lol
or if this one is smaller than 4 inch bore truck engine?
You going to laugh but I just did test on stock 97 6 speed
with stock performance exaust with 1 cat disintegrated you can drop rock through on one side lol
2 1/2 inch Y 4 1/2 inch single into Hooker Superformance muffler
with 2 exit pipes .
The test was drilling out idle air hole to 1/8 inch idle was 800 rpm with butterflies closed now its 1100 rpm idle
which is livable in backed up traffic sitting still in jam but sucks more gas
but increased power through out power band very notice able without dyno lol
making what was 52 mm 732 cfm into 54 1/2 mm 807 cfm Throttle body.
every body thinks I have LT4 .
after creaming their LS1 or LS3 or 2014 LT1 lol
But Their Heart stops When I show them Stock exaust manifolds
and LT1 lol
@@richardholdener1727 map is a ball park ignition spark
maf sensor with optispark
and cpu is miles ahead of the Hei and map sensor you set timing and it is what it is
The optispark would amaze you
if you watched how fast and how far
it throws in advance
and when maf sensor fails it goes to
map sensor back up and loses power in high rpms
if you make knock sensors deaf with 4.3 capacitors to ground or tune them out
the cars pull harder than ever before
and Msd and distributor would melt out
center coil carbon trying to keep up lol
been there done that over and over for ten years in Blown Baha truck
actually the failure of optispark was two plastic caps facing each other and dead ending the 2 vacs a simple notch cut at 6 oclock to match and let vacume do its job is easy fix lol
I bet super ram would carry max Hp
longer and farther
it did on Lingenfelter cars.
GM actually bought out mitsubishi
to get optispark technology
Thanks so much for this vid. I run 2 95 firebirds in England, 1 stock efi auto, 1 carb 650cfm 6spd with headers. Never had them dynoed but the carb over efi difference is very noticeable. Is it possible your timing curve, lower down with the injectors is hurting your torque numbers? Can you get the timing in sooner with lighter springs? What rpm was your timing all in by?
the dist is locked-timing on efi is controlled by ecu
you feel carb pump alone the throttle body was 732 cfm
go 750 Elderbrock or holley
Carb 4 the win
Richard how would a truck norris or chupacabra cam match up with a dual plane and carb?
very well-but BTR doesn't make a Truck Norris for the LT1
I’m curious about timing , I did a 93 5.7 TBI swapped it to a carburetor and having trouble finding the sweet spot in the timing range
for WOT-we keep adding timing til it stops making more power
Richard you have to add a throttle body air splitter on the throttle body !!!!! PLEASE !!!
air foil FTW!
@@richardholdener1727 LETS GOOO !! Would you be willing to do a dyno run with and without the air foil ? I’d love to see some proven results. I’ve only ever found an old notes chart from a forum where a guy supposedly tested the air foil, seeing an average gain of 5 hp, but never showed a dyno chart.
@@theredwedge9446 He lied He turned your TB into 48 mm
when with idle air is 52 mm TB
works just like SCCA 220 horse blocker plate
take off cia and start the butterflies will be shut
bock 4mm hole with pencil eraser it will stall
rev it 2-3000 rpm and plug hole it will bog
airfoil was invented by ford companies to steal lt1 power
about 50 horse
@@theredwedge9446 its at wot a 100 cfm loss
RH...my question is this...For appearnce purposes only...I want to have my LT1 popping up thru my hood..What are my options?
I already know ya should have sent the lt1 intake an heads to lloyd elliot portworks lol i really wanna see ya do a lt1 throttle body size test 52mm dual compared to the 58mm dual compared to the big mono blades these motors need more love!
I wish Richard would get Llyod Elliot heads and cam package to add to these tests.
LE 2 and LE 3. HIS TRICK FLOWS TOO!
I think he is working with TPIS so that won’t happen
Hello from Romania 🇷🇴
I have a 1993 LT1, and i want to carb swap the engine.
The engine is out, the old parts that i have or kind if really old and i want new ones.
Tell me if this list is good !
GMPP intake
Carburetor ( but what carb does this intake accepts ? The one that you are using in video is good ? I was thinking for a 600 cfm one. And i need one that allows the tv kicdown cable bracket for the transmission to shift. Any advice heare also is needed.)
Hei distribuitor
Starter
Water pump
Plugs and wires
Radiator.
What about the griund wires and what mecanical gauges should i use ?
If i miss something help me out !
Or help me the corect list !
I allways watch your videos.
Thanks !!!
no idea on gauges other than autometer-the rest should work well (a bigger carb might help power)
@richardholdener1727 how much you sugest for a 5.7 L ? Because if you calculate the displacement it needs a 600 cfm, but i see you are using a 750 one !
@@athosndl get a 750
Hey Richard I have a question for a new build what would be the best 5.3 to build with stock bottom end for all motor and nitrous to handle it
any 5.3L will handle nitrous
@@richardholdener1727 LM7 flat top pistons bottom end or lc9 4th gen all aluminum
@@richardholdener1727 I have a lm7 flat top pistons application rn in the car how much will it handle?
We need a 4x crank 1x cam Holley set up
I love this Gen2 LTJunk stuff! For Real
What Holley efi is this? I would like to know for my setup, if it’s tunable
Holley HP-but using a distributor
David Vizard, you tube, anti reversion theory. Can you test it?
Something is up. There is no way the lt1 intake should be sub 300 ft lbs at over 3000 rpm. If I recall torque peak on those were about 2400 rpm. Not only that but in the past you tested the lt1 vs the lm7 and there was less than 10 hp difference 355-365 hp on these from your previous testing
peak torque on lt1 is not 2400 rpm
@@richardholdener1727 You can be kind of a clown sometimes. The tq I mentioned was a published figure from GM for early lt1's in f-bodies. This figure was suggested to show you your numbers look goofy. I have chassis dynoed my 94 when it was stock and saw table top tq from 2000-4500 rpm, as well as many others show the same characteristics in manual cars. Obviously those exact characteristics vary with headers, optimized timing, etc. Either way, the point is that peaks may vary but it's funny you focus on that rather than the general issue where your numbers seem off even compared to another stock lt1 you dynoed in the same configuration.
@@ttank1994 peak torque on lt1 is not 2400 rpm
Richard I’ll loan you a lt1 turbo hotside if you need it
What did you think of the new Edelbrock carb?
very good
The intake probably is the biggest difference. Carb. Always makes a little more power on same intake. If u put a holly sniper on the carb intake the difference would be minimal saw it many times. Engine masters for one this comparison was like comparing apples to oranges.
Lets see some different engines rich how about a boosted 3.6 LGX u can find them for around $500 now. Put some turbos on one do ring gap lets see how much boost one can take lol!!
Something is certainly wrong with the lt1 intake. I usually see them around 350-360hp and of course still less torque than that dual plane, but not that big of a difference.
So I have a 96 GMC 4 x 4 extended cab short bed I'm not 100% sure which transmission is in it but I've only gone from carburetor to EFI on stick shift models. Do I need a TCU to be able to run a carburetor,/ intake and distributor. I already have a cam for it and I've already put long tube headers on it any help would be great. Thank you
If its a 1500 or a heavy half you have the 4l60e. I don't think you need one. The stock computer should already be reading vacuum, throttle position, speed sensor and timing.
I would check forums, has definitely already done it lol
Someone has definitely already done it*
Richard, please 🙏
Stop zooming in and out
I am so seasick, puking pizza 🍕
Help!!😢😢
zoom zoom zooma zoom
@@richardholdener1727
Madaz commercial
Kinda funky, but not funky....I would expect the peak numbers to be close with a stock cam, so ok.
I would expect the carb/duel plane to make more everywhere else, but in a more liner fashion from low to high RPM?
Not that TPI looking hump down low...
Is it just me or is this particular old LT1 a bit weak or no...guess we will find out.
It'll run good, as long as ya just git rid of that opti-spark thingy. Lol
they work fine
The fact theres not a single aftermarket EFI intake for these LT1s is disappointing. My buddy has one making about 400 WHP in a Trans Am and it hooks and goes a-b. Funny watching 20-60k dollar "performance cars" get stomped by a 7k dollar Pontiac 😂.
TPIS makes or made EFI intakes for the gen2 LT1. They also make throttle bodies as large as one oval mono blade. I have the version with a distributor hole on a 91 Camaro. Good intake for a stick. It's definitely not a torque intake since it's just a taller version of the LT1 factory intake. I really want to try a FIRST intake to get the added torque. It a big port tuned port design. Not sure if they have a model for the LT1 though.
Dual plane VS ported stock should have been the test
why
@@richardholdener1727 most of us don’t run the stock manifolds it’s one of the first mods is to port them with a 58mm TB.
................................. FLOW OBSTRUCTION 4SHO
4 air bleeds not 2 per ventri. Mike, welcome to the 21st century.
And that testing settles that.
Guys, if your building a 500hp motor you cand have 32mpg
Carb
Wrong cam
Never do that zoom after zoom intro ever again please it almost made me feel sick lol
Just showing the slideshow is enough without the PowerPoint transition vibes
F YAH
Perfect example of a combination mismatch! High rpm intake with a tiny cam and crap heads makes no torque or power.
nothing there is correct
@@richardholdener1727 cool! Show us what went wrong!
🫡LT1
Crazy how in stock form with a real good tune they make almost as much hp as a stock 4.8 and almost as much torque as a stock 5.3.
This is why I don't bother with sbc anymore
Crazy how stock pickup truck engines will outrun the end of run 30 year old Chevy based on a 70 year old design? Flathead, Oldsmobile and Cadillac OHV guys said the same thing about the SBC. People still build them. Hell, the 2.0 liter turbo mills today are same HP/More Torque than the LT1 in a Camaro. Surprise. All of them are better than walking.
Yea that’s true in stock form, but once you add heads to the LT1 it starts to walk away from those engines you mentioned. Those 5.3’s don’t respond well to aftermarket heads because the ci isn’t there.
You can like this (and other) comment by double clicking on it.
You need to do this test with a bigger cam shaft, maybee it will like the short runner with more rpm 👍