Excellent video. The Gen2 LT1's are the red headed stepchild of the SBC's. I have a completely stock other than 355 gears and a built 700r4, 1993 C4 corvette 40th edition. Surprise a lot of people with that old car. Love it. Love the video. Brings back good memories of the old "camel humps"....LOL
Supposedly the TBI 350s were considerd LT1s which are Gen 2 SBCs. In that case id remove the TBI and put a TPI/LT1 intake on it with a Low Energy Ignition (LS1 coils)
Back in the day, I ran a 1970 LT1 in a Z-28 Camaro... It was a great car and engine. I updated the cam to a Racer Brown STX 21 solid lifter(I believe), and the 350 then made right at 400 horsepower and revved out to 7000. Roller rockers were definitely needed then as the Racer Brown cams increased action, burnt up factory rockers. That cam really brought that engine alive. The factory cam was plain lazy...
well, the OEM cam was meant for operating AC and vacuum options and a wide range of driving styles. Mellow in a 350, less so in a 301 with a 780 cfm Holley.
@@MasterWitchDoctor Racer Brown was a big name back in the day, like Isky or Clay Smith (y' know the woody woodpecker guy). there was Reed, Howards, Potvin, Webber, General Kinetics, Sig Erson, Shelby, Schnieder, and you could buy custom van parts from a Sears or JC Penny catalog. People think the internet has brought on a slew of custom car parts at our fingertips, but they always existed. and then there was the cheap-o crap, JC Whitney, Almquist, Honest Charley, etc. Then Holley/Mr Gasket began buying up brands under one umbrella...
Richard, thank you for sharing another excellent in-depth comparison. Your June 2010 MotorTrend article comparing the '70 LT-1 to the 1996 LT1 was instrumental in helping us decide on our swap (click on avatar to view) way back when, and we've been fans ever since. Keep up the great work, and we'll keep following your channel!
Time and technology has really brought big horsepower back from the weak late 70s and 80s. Makes me think about adding new age tech to old school engines. Cam and heads are so much more efficient and cheaper than 20 to 30 years ago. Just comparing the fuelie double hump heads to modern vortex heads is daylight and dark differences.
They say the bottom end is worth a few hp with tricks, Cam a few more then sodium raised runner heads and taller intake a few, then the 1.6 Roller rocker's... I'd say it makes 400 hp on his dyno
Does the LT4 make much more power than a standard LT1? I know they had a hotter cam and slightly better heads and intake. I had a customer for years that had 2 LT4 Corvettes and I was impressed in the 1990's by them. One was built by Doug Rippie though and was a 383. It was the only C4 Corvette that would keep up with the later C5 and C6 cars!
I was thinking the same thing. The 96 LT4 should be the highest performance small block before the LS1. I know an LT4 powered C4 corvette would hang with an early LS1 C5.
Love the gen 2 LT1!!! I just wish they weren't so expensive to modify. I've got a 96 Buick Roadmaster sedan and it's pretty good. I just wish I could afford to make it better
Richard, great video, can’t wait to see the LT5 vs LS6! Would be cool to see a Gen 1 build to be comparable to the LS engines and see how they compare (i.e., better heads, coil on plug, EFI, etc)… any chance?
@@richardholdener1727 Grubworm explains it SBC is Stronger 5 bolts around cylinders can hold 2000 hp Ls has water jackets in between 4 bolt pattern and crack into water jackets and heads seal starts lifting under super compression $ bolts just aint enough thats why ls is a low compresion engine from factory ford made same mistake the compression blows into water jacket
Once we stage 2 port the efi LT1s heads and intake manifold power gains are 60-70hp more with no other parts changes, for those wondering. Add a better cam and the power increases go through the roof.
As someone who's getting ready to start building a gen 2 LT1, I would love to see some more content around how they handle boost and how far you can get them N/A with all the workings and some valve springs! Great content, Richard!
Same. I have a nice lt1 c4 an a Holley Terminator X for it. Just have to get the Torqhead and wait for it to blow up so I have an excuse to yank it and build.
As of right now I'm planning on using torqhead but I know there are a couple other systems that I might look into but the opti will be no more after the build is complete.
@@bartpang that's what started me on even wanting to rebuild the engine. He's going to be switching to a gen1 350 later this year. He doesn't use the reverse cooling from the gen 2, which makes sense. I will not be going turbo though. It'd still be fun to see a big bang of the gen 2 LT1!
It's all about airflow. The Gen 1 SBC has 23 degree heads, the Gen 2 LT1 has 21 degree heads, and the LS1 has 15 degree heads. All things even, the compression, cam specs, etc, the LS1 will still out perform them all because it will flow more air, because of the more efficient heads. What I would like to see you test is a SBC with same compression, and same cam specs as the LS1, but with 15 degree heads. Who will win?
Next test...factory tri-power set ups vs single carb. Pontiac, Chrysler, Ford. I'd kill to see a 435 like mine go up against an L72. 100 cfm more carb shouldn't make that much difference, but GD that 435 is a monster. I made mine an L-89 but that's just for weight and cool factor. It is 1000% factory in a '67 Corvertte coupe, but I'd happily go up against any engine from back in the day. Lost a little zip when I went back to a 4.10 from a 4.56, but even as a weekend car, that's a lot of noise with side pipes.
I’d like to the the GEN2 LT-4 … factory rated at 330hp, however word in the street is that it was de rated on paper to make room for the LS1 … It’s actually impressive what those old engines did on iron heads, flat cams, poor head design and on one case the hood old quadrajet …
Do a stock gen 2 330hp Lt4 vs Ls1/Ls6. And a full gen 2 Lt1 build would be great. And by the way, when is the Lt1 and 4.3 internals swap going to happen?
I had an LT1 '70 'vette and it came from the factory with a Q-jet. It also had factory air, despite the fact you "couldn't get AC on one". Car was last in PA and still has less than 50k on it...
@@richardholdener1727 Yep, been hearing that for 50 years. Also didn't come with AC. Except, of course, if you ordered it that way from a buddy who owned a big-ass GM dealership...
Had a '73 Montego MX, too; couldn't be had in triple black. Didn't come in a 351W/FMX combo, especially not with limited slip 2.8 geared rear...except mine did. Point being back before you were born the factory would equip anything they had any way you wanted, if it existed in their line and you had the cash...and a dealer who knew what boxes to check.
I Like it. Would "like" to have seen the early engines upgraded with modern heads, stock intakes and then the RPM airgap intake square & RPM spread bore, with the original factory cams? The heads were definitely the weakest link, then the intakes. Oh well if the Crypto alt coins do a mini moon shot before the Big crash, I will build my own dyno facility and test to my hearts content. Yes, I understand these were done in the past, because I already watched all of them!!!! That is How Much I Like your work!
@@richardholdener1727 the late model gets plenty of Love? The early ones, even the 327 (Great test series by way!), all got cams 1st or at the same time as the heads? Then you/I will build a gen one like a LS, thinner rings, equivalent sloppy specs cam, similar rocker ratio, compression, oiling system, same header size and I suppose an RPM Airgap with a 750 cfm holley. Since the gen1 motors have ZERO intake systems that can compete with the LS! Yes, I am pretty sure who will win, by how much? Just dreaming Bud, keep up the Great work. If the tail is not left hanging, no one can yank it? Peace
👌👍 Thank you for sharing so much information. My son and I are building a F.E.D. and using your thoughts on the engine build. Will send pictures when done 😊
Really strange that back 20 yrs ago when I had my Firehawk, 95 model with T56 and mail order tune as my only mod, I had no problem at all keeping up with the supposedly much faster LS f-bodies... considering this test shows that engine made about 50hp more.
@@richardholdener1727 Didn't know it was that short.. Are the runners that much shorter than a tipical carb/ Edelbrock Performer which has ample torque?
I'd truly be delighted to see more LT1 vids. All things LT1 perhaps??ps ? I've seen "the other guys" vid multiple times already and it was great. So I'm confused. In that vid you claimed the LT1 was even more powerful than a 5.3..
Hey Richard, I knew a guy back in the mid eighties that had a 350 with Bow tie heads and intake and GM off road cam. Possible to test factory hp parts? 450 hp? I believe it was 12 to 1 with GMs biggest off road cam (worked at a dealership) and would run 12.2 in the quarter with a th350 and 5.13 gears shifting at 7600 rpm in a 67 Chevelle.
I'll have what you're smoking. What factory GM came with 12:1 compression and why would GM make an "off-road" cam? They sold street legal vehicles, not offroad. Even if these magic "factory made" parts existed how would he be able to find them today?
@@theupscriber65 Sorry but you can look this stuff up. Chevy has been making high performance “Bow-Tie” heads and single plane intakes for years and still does. Chevy also made several off road solid lifter cams with extra duration and lift that were never installed in cars. As for the 12 to 1 I believe he milled the heads to keep the piston weight down but he may have used a dome piston. The car screamed, he even had a mechanical tach mounted on the dash which required a special distributor so cool.
@@edwardwood3622 you're reminiscing through rose colored glasses. I'm sure everything was better back then. Just like all the 9 second 1/4 mile cars my buddies had in HS with their sbc and open diffs. Post some part numbers then. And don't forget to answer where he'd get those magic parts today?
just for s&g if you had a ls1 5.7 with a factory stroke of 3.622 and the wanted to bore it out too 3.922 to obtain that actual 350 mark are there piston riing coomboos that would fit this???
I know a ls1 manifold has been bolted onto a lt1 before test id like to see is Lt1 with ls6 manifold a 500 lift cam and 6.2 rollers so all is created equal not so much apples and oranges but apples to apples but with ls1 springs too
@@richardholdener1727 MSD ATOMIC AIRFORCE just has different version for lt1 1009 bucks they say its the strongest aftermarket its more a ls design did good at lingenfelter too but its pricey
Have you ever gotten to compare the numbers of a Pontiac Ram Air III engine vs the Ram Air IV engine? I always wondered exactly what they made and just how far apart in power they actually were in stock configuration.
lol I just think the LT1 has unfinished Business lol wasnt the lt1 in this a smaller than 4 inch bore? I think LS is a very cool Race car engine . But my 97 camaro Z28 6 speed hasnt lost to any of the LS Family But I havnt ran any Boosted ones I dont think . The ford Airfoil mind trick didnt work on me lol It takes a lot to Beat a 11 flat second car Running stock exaust port matched and hogged out manifolds lol They got short changed on compression and later on weight it will take a realy expensive head and cam package to beat my lt1 lol The NHRA Stocker record for 97 camaro Z28 6 speed is 10.730 google it lol
my 97 Z28 won Grudge night Against about every High horse Engine there is even the local Race cars lol And it did it through Stock exaust Manifolds lol no cats though I think the thinner casting 561 heads are way faster like 400 horse usually winning by 8-9 car lengths against the all the LS clan a lot of it is Driver skill but the other half is Definately Engine
You have pictured as an L-46 350/350 is an L-82 350/320, Quadrant carb and iron intake. The L-82 in 1973 was cammed the same with good heads. I lived and ran these motors, contact me, I can help!
I am actually scared of LT1 manafolds because nobody has ever done that LS1s ought to bolt up Edelbrock has one but cost 700 and nobody knows if it even works
The Ls6 manafold was about 40 extra horse Just a Edebrock high rise added 20 horse on old 350 Wheres the push rods High Ram HA HA The LS6 Didnt Come out for 10 years lol after LS the LT1 rockers were same as old 350 Advertised at 1.5 ratio But were actualy 1.324 And ment to be a full roller engine That would put lt1 cam at 506 and 520 lift evening up the the LS1 cam 1st a set of crane gold 1.5 roller rockers cause its lift x rocker ratio is actual lift the actual specs on lt1 heads were 177 intake and 75 ccs exaust Yup They actually exeeded the advertised runner lol port match the intake ,heads and exaust and push the port match through intake runner pinch point and round golf ball bit the floor of intake runner a hole every quarter inch And drill the 4 mm hole in bottom of Throttle body to 6 mm or find the 96-97 561 heads thinner casting 200 on ebay lol and run 1.5 crane gold roller rockers and drill the 4mm to 6mm hole in throttle body . cause the little throttle body is maxed 48 actualy with the hole 52 mm making it 54 thats 50 more cfm at 6000 rpm . Thats just what I call a Tune up vs your LS6 high Ram and let titans Slug it out make a great video or are you going to desert the LT1 just like chevy did You wild up every engine you touch But you Tip toe around the LT1 Richard Holdener The last of The Push Rod Chevy Small Block The most Famous 350 LT1 Vette ENGINE Are you Feeling Guilty Richard Holdener? Shame Shame LOL
Richard, it would be great if you would do a full build on a gen 2 LT1! Show all the LS guys what they're capable of
That's Grubb Worm's purpose in life 🔥
Steve Morris has a video of a GM block gen 2 lt1 engine making right at 2000hp on his engine dyno.
@@rogergm92 and he’s not even the only one. The lt1 has run times near him before just in a auto
@@rogergm92 who's this
Eww
Excellent video. The Gen2 LT1's are the red headed stepchild of the SBC's. I have a completely stock other than 355 gears and a built 700r4, 1993 C4 corvette 40th edition. Surprise a lot of people with that old car. Love it. Love the video. Brings back good memories of the old "camel humps"....LOL
Supposedly the TBI 350s were considerd LT1s which are Gen 2 SBCs. In that case id remove the TBI and put a TPI/LT1 intake on it with a Low Energy Ignition (LS1 coils)
@@shadowopsairman1583 Those were Swirl port captains bar heads got great gas milage But LT1 has tumble and fast burn race heads
LS6 is king of pushrod 5.7
Looking forward to the LT5 vs LS6 shootout!
Back in the day, I ran a 1970 LT1 in a Z-28 Camaro... It was a great car and engine. I updated the cam to a Racer Brown STX 21 solid lifter(I believe), and the 350 then made right at 400 horsepower and revved out to 7000. Roller rockers were definitely needed then as the Racer Brown cams increased action, burnt up factory rockers. That cam really brought that engine alive. The factory cam was plain lazy...
well, the OEM cam was meant for operating AC and vacuum options and a wide range of driving styles. Mellow in a 350, less so in a 301 with a 780 cfm Holley.
WHAT IS FISHER-PRICE HELL KIND OF NAME IS RACER BROWN? Ever heard of Lunati? Now theres a cam company.
@@MasterWitchDoctor Racer Brown was a big name back in the day, like Isky or Clay Smith (y' know the woody woodpecker guy). there was Reed, Howards, Potvin, Webber, General Kinetics, Sig Erson, Shelby, Schnieder, and you could buy custom van parts from a Sears or JC Penny catalog. People think the internet has brought on a slew of custom car parts at our fingertips, but they always existed. and then there was the cheap-o crap, JC Whitney, Almquist, Honest Charley, etc.
Then Holley/Mr Gasket began buying up brands under one umbrella...
I'm always on team gen 2 LT1 lol.
lose the airfoil
Richard, thank you for sharing another excellent in-depth comparison. Your June 2010 MotorTrend article comparing the '70 LT-1 to the 1996 LT1 was instrumental in helping us decide on our swap (click on avatar to view) way back when, and we've been fans ever since. Keep up the great work, and we'll keep following your channel!
thnx
The gen 2 LT1 and LS1 are under rated ...
lose the aifoil
Lt5 vs ls6 vs 96 lt4 next test for the king of 5.7
yes
Im soo down to see what the LT-5 makes! I swear its under rated by the factory.
You are the guy who convinced me to get a station wagon with the gen 2 lt1. I love the engine a lot!
noice
Great video as always. Can't wait to see the LT5. As a previous c4 ZR1 owner I'll always have a soft spot for that engine.
Yeah it is probably never gonna happen
Just when we thought that Richard found all the “I wonder if” tests we are too poor to do, he finds another we forgot about. Keep up the great work!
Now we need a gen 2 lt4 vs lt5 and ls6
Time and technology has really brought big horsepower back from the weak late 70s and 80s. Makes me think about adding new age tech to old school engines. Cam and heads are so much more efficient and cheaper than 20 to 30 years ago. Just comparing the fuelie double hump heads to modern vortex heads is daylight and dark differences.
I'm excited can't wait for the Z06 performance test 🙌
1996 LT4? I think it is worth finding one and testing it since it is the true and all-time king of the hill in the Gen 1-2 LT world.
I did forget about the LT4
They say the bottom end is worth a few hp with tricks, Cam a few more then sodium raised runner heads and taller intake a few, then the 1.6 Roller rocker's... I'd say it makes 400 hp on his dyno
You can't go wrong with any version of the Chevy small block. It's my favorite engine. They're all amazing.
Naw you can definitely "go wrong" with an LT1
Maybe you should do more research before showcasing your ignorance?
My favorite is the l46
I tried telling people for years that the lt1 made more power then what GM was claiming!!!
I can’t wait to see LS6 vs LT5, both 405 hp and close to 400 ft-lbs, but it’ll be interesting to see how they compare in power bands.
Really look forward to LT5 vs LS6. As for LT4 it probably makes similar power to LS1
Does the LT4 make much more power than a standard LT1? I know they had a hotter cam and slightly better heads and intake. I had a customer for years that had 2 LT4 Corvettes and I was impressed in the 1990's by them. One was built by Doug Rippie though and was a 383. It was the only C4 Corvette that would keep up with the later C5 and C6 cars!
I was thinking the same thing. The 96 LT4 should be the highest performance small block before the LS1. I know an LT4 powered C4 corvette would hang with an early LS1 C5.
LT1 300hp, LT4 330hp. LT4 has better heads, and intake, really needs hot cam and headers. Both need coil on plug conversion, optispark sucks.
Maybe he can add an lt4 in with the mix of the ls6 vs lt5.
@@fortier2727
Any engine with that optispark design is trash
Period
Love the gen 2 LT1!!! I just wish they weren't so expensive to modify. I've got a 96 Buick Roadmaster sedan and it's pretty good. I just wish I could afford to make it better
I was just starting to drive when the 2nd LT1 came out and remember that was the same year the phrase 5. Slow was created.
I’m routing for the LS6
Really love these videos of the old chev small blocks
Can't wait to see LS6 vs. LT5!
Richard, great video, can’t wait to see the LT5 vs LS6! Would be cool to see a Gen 1 build to be comparable to the LS engines and see how they compare (i.e., better heads, coil on plug, EFI, etc)… any chance?
I don't see a reason to modify the SBC to keep up with a stock Ls1-not sure what that proves
I'd like to see a Dunn head 95 LT5 dyno verus 02 up LS6 as well
@@richardholdener1727 Grubworm explains it
SBC is Stronger 5 bolts around cylinders can hold 2000 hp
Ls has water jackets in between 4 bolt pattern and crack into water jackets and heads seal starts lifting under super compression $ bolts just aint enough thats why ls is a low compresion engine from factory
ford made same mistake the compression blows into water jacket
Once we stage 2 port the efi LT1s heads and intake manifold power gains are 60-70hp more with no other parts changes, for those wondering. Add a better cam and the power increases go through the roof.
Been cool to see the old lt4 thrown in there
As someone who's getting ready to start building a gen 2 LT1, I would love to see some more content around how they handle boost and how far you can get them N/A with all the workings and some valve springs! Great content, Richard!
Same. I have a nice lt1 c4 an a Holley Terminator X for it. Just have to get the Torqhead and wait for it to blow up so I have an excuse to yank it and build.
They only handle boost while the Opti-Spark is functioning.....Hope you are going to different system!
As of right now I'm planning on using torqhead but I know there are a couple other systems that I might look into but the opti will be no more after the build is complete.
Do a search for Grubworm Camaro!
@@bartpang that's what started me on even wanting to rebuild the engine. He's going to be switching to a gen1 350 later this year. He doesn't use the reverse cooling from the gen 2, which makes sense. I will not be going turbo though. It'd still be fun to see a big bang of the gen 2 LT1!
I tol' that teacher, only math i need is 5.7 = 3'fiddy ;)
93 Firebird Formula here ....love the Lt1 over my old 99 trans am ls .. ls issues lol .lt1 is great
Thank you Richard I need to hear this much appreciated
Richard, please revisit the gen 2 LT1 cam upgrade with proper valve springs.
I used to be a sbc fan until I got my first bbc😜 torque monster 👻
You gonna start a war lol
It's all about airflow. The Gen 1 SBC has 23 degree heads, the Gen 2 LT1 has 21 degree heads, and the LS1 has 15 degree heads. All things even, the compression, cam specs, etc, the LS1 will still out perform them all because it will flow more air, because of the more efficient heads. What I would like to see you test is a SBC with same compression, and same cam specs as the LS1, but with 15 degree heads. Who will win?
lt1 had 23 degree heads stock just like the gen 1 sbc.
@@sebastianwallace268 Your right, my bad. It's the Trick Flow LT1 heads that have the 21 degree valve angle. Still the LS1 kills them all.
@@xlr8r3VA can't beat the original small block Chevy sound though can't really find a better sounding engine than a cammed carbed 350
Gotta love a 90s lt1
Without watching first I'm guessing the ls1 even though it's rated the least
SAE net vs gross. You're comparing apples to oranges.
Next test...factory tri-power set ups vs single carb. Pontiac, Chrysler, Ford. I'd kill to see a 435 like mine go up against an L72. 100 cfm more carb shouldn't make that much difference, but GD that 435 is a monster. I made mine an L-89 but that's just for weight and cool factor. It is 1000% factory in a '67 Corvertte coupe, but I'd happily go up against any engine from back in the day. Lost a little zip when I went back to a 4.10 from a 4.56, but even as a weekend car, that's a lot of noise with side pipes.
l89 alum-headed tri power-very cool-I would love to compare the Tri to the L72
So so what exactly made the gen 2 lt1 make that much power when it was rated for 300 hp when it came out, and 275 in the camaros?
cant wait to see that lt5 on the dyno. really cool engine.
You on the bubble man😅
What about the LT4?
Ok a TPI 350 with Vortec Heads and Low Energy Ignition (Low Intensity=LS) system.
I’d like to the the GEN2 LT-4 … factory rated at 330hp, however word in the street is that it was de rated on paper to make room for the LS1 …
It’s actually impressive what those old engines did on iron heads, flat cams, poor head design and on one case the hood old quadrajet …
You also missed the L31, LOL
Do a stock gen 2 330hp Lt4 vs Ls1/Ls6. And a full gen 2 Lt1 build would be great. And by the way, when is the Lt1 and 4.3 internals swap going to happen?
A predictable outcome but still great video. Like to see the 90s lt1 with a hotcam
I had an LT1 '70 'vette and it came from the factory with a Q-jet. It also had factory air, despite the fact you "couldn't get AC on one". Car was last in PA and still has less than 50k on it...
LT1 in 1970 did not come with Q-Jet
@@richardholdener1727 wasnt it rated at 370 hp in the Vette and the 360 number comes from the Camaro Z28 I believe.
@@richardholdener1727 Yep, been hearing that for 50 years. Also didn't come with AC. Except, of course, if you ordered it that way from a buddy who owned a big-ass GM dealership...
Had a '73 Montego MX, too; couldn't be had in triple black. Didn't come in a 351W/FMX combo, especially not with limited slip 2.8 geared rear...except mine did.
Point being back before you were born the factory would equip anything they had any way you wanted, if it existed in their line and you had the cash...and a dealer who knew what boxes to check.
Personally I blame squirrels
I'm trying see what can combo's I can throw at an gen 2 without changing to much
cam and springs first-then ported heads
The one with the best head's. Going out on a limb
We had a lt1 with lt4 hot can kit thang was a beast
I'd like to see a 1996 LT4 dyno
Thank you Sir, priceless lessons 🙏
I would love to see a build series on the L31 chevy truck motor.
Great video. LT4 was 330hp. Wonder where it falls in this line up
Probably close to 400hp measured this way, and with headers and tune
That 400 is with headers an tune
Not stock
Thus that 400 wouldn't count in a legitimate comparison
Perhaps you should pay attention better
I Like it. Would "like" to have seen the early engines upgraded with modern heads, stock intakes and then the RPM airgap intake square & RPM spread bore, with the original factory cams? The heads were definitely the weakest link, then the intakes. Oh well if the Crypto alt coins do a mini moon shot before the Big crash, I will build my own dyno facility and test to my hearts content. Yes, I understand these were done in the past, because I already watched all of them!!!! That is How Much I Like your work!
why would we upgrade just the early motors (which was done for another vid)
@@richardholdener1727 the late model gets plenty of Love? The early ones, even the 327 (Great test series by way!), all got cams 1st or at the same time as the heads? Then you/I will build a gen one like a LS, thinner rings, equivalent sloppy specs cam, similar rocker ratio, compression, oiling system, same header size and I suppose an RPM Airgap with a 750 cfm holley. Since the gen1 motors have ZERO intake systems that can compete with the LS! Yes, I am pretty sure who will win, by how much? Just dreaming Bud, keep up the Great work. If the tail is not left hanging, no one can yank it? Peace
Love this test!!! Awesome!
and will bigger injectors help?
Whats realy the Best cam for LT1 ?
👌👍 Thank you for sharing so much information.
My son and I are building a F.E.D. and using your thoughts on the engine build. Will send pictures when done 😊
Im going with the 5.7 for the win!
Really strange that back 20 yrs ago when I had my Firehawk, 95 model with T56 and mail order tune as my only mod, I had no problem at all keeping up with the supposedly much faster LS f-bodies... considering this test shows that engine made about 50hp more.
Aww tiger 1945 why did you delete your completely stupid post? I was looking forward to replying.
1996 Corvette LT4/350 .. Torque King below 4000 ? Best flowing Gen 1 heads n Tuned Port style manifold.
Not so great torquewise but good power.
torque king below 4000 rpm with that short runner intake?
@@richardholdener1727 Didn't know it was that short.. Are the runners that much shorter than a tipical carb/ Edelbrock Performer which has ample torque?
Plz Richard more old school 5.7 lt1 videos!!
IKR
I'd truly be delighted to see more LT1 vids. All things LT1 perhaps??ps ? I've seen "the other guys" vid multiple times already and it was great. So I'm confused. In that vid you claimed the LT1 was even more powerful than a 5.3..
Finally not an Ls! Damn! I haven't watched any videos. But still chevy oh well.
Never got the lt5 vs ls6
LT4 versus LS1.... you'd be surprised.
Would like to see ZZ6-dyno run ,with carb and fuel injection results too!
it's not a factory motor-but I think westech has run 1
Hey Richard, I knew a guy back in the mid eighties that had a 350 with Bow tie heads and intake and GM off road cam. Possible to test factory hp parts? 450 hp? I believe it was 12 to 1 with GMs biggest off road cam (worked at a dealership) and would run 12.2 in the quarter with a th350 and 5.13 gears shifting at 7600 rpm in a 67 Chevelle.
I'll have what you're smoking.
What factory GM came with 12:1 compression and why would GM make an "off-road" cam? They sold street legal vehicles, not offroad. Even if these magic "factory made" parts existed how would he be able to find them today?
@@theupscriber65 why?
@@theupscriber65 Sorry but you can look this stuff up. Chevy has been making high performance “Bow-Tie” heads and single plane intakes for years and still does. Chevy also made several off road solid lifter cams with extra duration and lift that were never installed in cars. As for the 12 to 1 I believe he milled the heads to keep the piston weight down but he may have used a dome piston. The car screamed, he even had a mechanical tach mounted on the dash which required a special distributor so cool.
@@edwardwood3622 you're reminiscing through rose colored glasses. I'm sure everything was better back then. Just like all the 9 second 1/4 mile cars my buddies had in HS with their sbc and open diffs. Post some part numbers then. And don't forget to answer where he'd get those magic parts today?
Do a camaro LT1 with aluminum heads N/A with the lt4 hotcam.
just for s&g if you had a ls1 5.7 with a factory stroke of 3.622 and the wanted to bore it out too 3.922 to obtain that actual 350 mark are there piston riing coomboos that would fit this???
you can't bore an alum ls1 block that far without sleeving
when you do these comparisons can at end of video after you sign off put the dyno comparison ultimate chart up for 5 or 10 seconds
the charts are in the video
I know a ls1 manifold has been bolted onto a lt1 before
test id like to see is Lt1 with ls6 manifold a 500 lift cam and 6.2 rollers so all is created equal
not so much apples and oranges but apples to apples
but with ls1 springs too
you can't bolt an LS1 intake to an LT1,
@@richardholdener1727 MSD ATOMIC AIRFORCE just has different version for lt1
1009 bucks they say its the strongest aftermarket its more a ls design did good at lingenfelter too but its pricey
I want to see an LT4-LS1-LS6-LT5 shootout.
A kid showed me his catfish camaro on the chassis dyno with a cai put down 345whp. No wonder them cars run high 12s with bolt ons
Have you ever gotten to compare the numbers of a Pontiac Ram Air III engine vs the Ram Air IV engine? I always wondered exactly what they made and just how far apart in power they actually were in stock configuration.
no Pontiacs yet
I wonder how close it would be to run a head on the 90s LT1 that flows close to the LS1 and then with similar cams.
the LT4 makes similar peak power to an LS1
@@richardholdener1727 Can we see power graphs for both?
I would like to see the 96 corvette lt4 engine.
I'm thinking the (405hp net) LT5 would be around 460- 470hp with a custom tune, measured this way?
Can't wait to find out ☺
The most powerful 350ci built is the one you build😉
What about the one year only LT-4?
5.7 Hemi vs 5.7L LS1 would also be a great comparison.
I think I have that
I would like to see the old 350s run on 100 octane like we had back in the day.
it changes nothing in terms of power-we had full timing
The Gen 2 LT1 was jipped The LS1 had Factory 1.6 roller rockers
and got 5oo lift cam
Id like to see the stock LT1 with 1.6 rollor rockers
vs LS1
LS motors have 1.7 rockers and much better heads and intake and windage tray etc...
lol I just think the LT1 has unfinished Business lol
wasnt the lt1 in this a smaller than 4 inch bore?
I think LS is a very cool Race car engine .
But my 97 camaro Z28 6 speed hasnt lost to any of the LS Family
But I havnt ran any Boosted ones I dont think .
The ford Airfoil mind trick didnt work on me lol
It takes a lot to Beat a 11 flat second car
Running stock exaust port matched and hogged out manifolds
lol
They got short changed on compression
and later on weight
it will take a realy expensive head and cam package to beat my lt1
lol
The NHRA Stocker record for 97 camaro Z28 6 speed
is 10.730 google it lol
So, what kind of power can the lt1 make with port fuel injection?
I love all of them.
my 97 Z28 won Grudge night Against about every High horse Engine there is
even the local Race cars lol
And it did it through Stock exaust Manifolds lol no cats though
I think the thinner casting 561 heads are way faster like 400 horse
usually winning by 8-9 car lengths against the all the LS clan
a lot of it is Driver skill but the other half is Definately Engine
The 70 LT1 should have made more power and reved higher than the L46 considering the bigger cam and better intake.
You have pictured as an L-46 350/350 is an L-82 350/320, Quadrant carb and iron intake.
The L-82 in 1973 was cammed the same with good heads. I lived and ran these motors, contact me, I can help!
I ALSO RAN AN L82
I am here ✋️ sbc fan 👍
LS1 allday
I am actually scared of LT1 manafolds because nobody has ever done that
LS1s ought to bolt up Edelbrock has one but cost 700 and nobody knows if it even works
Is there a reason you did not include the Gen II LT4? Curious how that would have compared.
He probably forgot about that one. 🤦
that will be part of it
I bet it is difficult to source, but it would be awesome to see the LT1/LT4 with the Lingenfelter designed Accel Super Ram manifold.
Yep, I knew the LS1 had it all the way. Only the LS6 is stronger than it for a factory 5.7L SBC.
For Torque it looks like the L46 and LS1s are the way to go.
How about LT4 vs LS6?
yes
The Ls6 manafold was about 40 extra horse
Just a Edebrock high rise added 20 horse on old 350
Wheres the push rods High Ram HA HA
The LS6 Didnt Come out for 10 years lol after LS
the LT1 rockers were same as old 350 Advertised at 1.5 ratio
But were actualy 1.324 And ment to be a full roller engine
That would put lt1 cam at 506 and 520 lift evening up the the LS1 cam
1st a set of crane gold 1.5 roller rockers
cause its lift x rocker ratio is actual lift
the actual specs on lt1 heads were 177 intake and 75 ccs exaust
Yup They actually exeeded the advertised runner lol
port match the intake ,heads and exaust and push the port match through intake runner
pinch point and round golf ball bit the floor of intake runner a hole every quarter inch
And drill the 4 mm hole in bottom of Throttle body to 6 mm
or find the 96-97 561 heads thinner casting 200 on ebay lol
and run 1.5 crane gold roller rockers
and drill the 4mm to 6mm hole in throttle body .
cause the little throttle body is maxed 48 actualy with the hole 52 mm
making it 54 thats 50 more cfm at 6000 rpm .
Thats just what I call a Tune up vs your LS6 high Ram and let titans Slug it out
make a great video
or are you going to desert the LT1 just like chevy did
You wild up every engine you touch But you Tip toe around the LT1 Richard Holdener
The last of The Push Rod Chevy Small Block The most Famous 350 LT1 Vette ENGINE
Are you Feeling Guilty Richard Holdener?
Shame Shame LOL