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

@rogergm92

2 жыл бұрын

That's Grubb Worm's purpose in life 🔥

@mattcossel29

2 жыл бұрын

Steve Morris has a video of a GM block gen 2 lt1 engine making right at 2000hp on his engine dyno.

@governmentcalamari9785

2 жыл бұрын

@@rogergm92 and he’s not even the only one. The lt1 has run times near him before just in a auto

@stevewalker412

2 жыл бұрын

@@rogergm92 who's this

@roymcdre9180

2 жыл бұрын

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

@shadowopsairman1583

2 жыл бұрын

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)

@alonzahanks1182

3 ай бұрын

@@shadowopsairman1583 Those were Swirl port captains bar heads got great gas milage But LT1 has tumble and fast burn race heads

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!

@richardholdener1727

2 жыл бұрын

thnx

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!

Looking forward to the LT5 vs LS6 shootout!

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.

@fnafplayer6447

5 ай бұрын

Yeah it is probably never gonna happen

Lt5 vs ls6 vs 96 lt4 next test for the king of 5.7

@richardholdener1727

2 жыл бұрын

yes

Im soo down to see what the LT-5 makes! I swear its under rated by the factory.

Been cool to see the old lt4 thrown in there

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...

@albertgaspar627

2 жыл бұрын

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

2 жыл бұрын

WHAT IS FISHER-PRICE HELL KIND OF NAME IS RACER BROWN? Ever heard of Lunati? Now theres a cam company.

@albertgaspar627

2 жыл бұрын

@@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 excited can't wait for the Z06 performance test 🙌

Thank you Richard I need to hear this much appreciated

I'm always on team gen 2 LT1 lol.

@alonzahanks1182

3 ай бұрын

lose the airfoil

The gen 2 LT1 and LS1 are under rated ...

@alonzahanks1182

3 ай бұрын

lose the aifoil

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.

@richardholdener1727

2 жыл бұрын

I did forget about the LT4

@raymckinney604

2 жыл бұрын

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

👌👍 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 love these videos of the old chev small blocks

Love this test!!! Awesome!

You are the guy who convinced me to get a station wagon with the gen 2 lt1. I love the engine a lot!

@richardholdener1727

5 ай бұрын

noice

I used to be a sbc fan until I got my first bbc😜 torque monster 👻

@infamousnova

2 жыл бұрын

You gonna start a war lol

I tol' that teacher, only math i need is 5.7 = 3'fiddy ;)

Thank you Sir, priceless lessons 🙏

I’m routing for the LS6

Can't wait to see LS6 vs. LT5!

My favorite is the l46

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

2 жыл бұрын

I don't see a reason to modify the SBC to keep up with a stock Ls1-not sure what that proves

@raymckinney604

2 жыл бұрын

I'd like to see a Dunn head 95 LT5 dyno verus 02 up LS6 as well

Richard, please revisit the gen 2 LT1 cam upgrade with proper valve springs.

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.

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.

cant wait to see that lt5 on the dyno. really cool engine.

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.

You can't go wrong with any version of the Chevy small block. It's my favorite engine. They're all amazing.

@GORILLA_PIMP

7 ай бұрын

Naw you can definitely "go wrong" with an LT1 Maybe you should do more research before showcasing your ignorance?

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

Gotta love a 90s lt1

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..

We had a lt1 with lt4 hot can kit thang was a beast

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!

@tunerdadtunerdad7927

2 жыл бұрын

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.

@ericbrandt829

2 жыл бұрын

They only handle boost while the Opti-Spark is functioning.....Hope you are going to different system!

@mohakinincbe

2 жыл бұрын

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

2 жыл бұрын

Do a search for Grubworm Camaro!

@mohakinincbe

2 жыл бұрын

@@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'd like to see a 1996 LT4 dyno

I love all of them.

Really look forward to LT5 vs LS6. As for LT4 it probably makes similar power to LS1

Without watching first I'm guessing the ls1 even though it's rated the least

@bcubed72

2 жыл бұрын

SAE net vs gross. You're comparing apples to oranges.

I would love to see a build series on the L31 chevy truck motor.

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!

@willstikken5619

2 жыл бұрын

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.

@fortier2727

2 жыл бұрын

LT1 300hp, LT4 330hp. LT4 has better heads, and intake, really needs hot cam and headers. Both need coil on plug conversion, optispark sucks.

@Val_Killmore

2 жыл бұрын

Maybe he can add an lt4 in with the mix of the ls6 vs lt5.

@GORILLA_PIMP

7 ай бұрын

​@@fortier2727 Any engine with that optispark design is trash Period

A predictable outcome but still great video. Like to see the 90s lt1 with a hotcam

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?

I want to see an LT4-LS1-LS6-LT5 shootout.

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?

93 Firebird Formula here ....love the Lt1 over my old 99 trans am ls .. ls issues lol .lt1 is great

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

The one with the best head's. Going out on a limb

LS6 is king of pushrod 5.7

I tried telling people for years that the lt1 made more power then what GM was claiming!!!

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.

@richardholdener1727

2 жыл бұрын

l89 alum-headed tri power-very cool-I would love to compare the Tri to the L72

Great test... my generation..lol...in my 50s now

You also missed the L31, LOL

So, what kind of power can the lt1 make with port fuel injection?

Plz Richard more old school 5.7 lt1 videos!!

@richardholdener1727

2 жыл бұрын

IKR

Just discovered this channel and I’m so glad I did! I just bought a 1969 Pontiac firebird with a 350 in it and I’m looking to do a rebuild/add some more hp and torque. My question is, have you ever done a build on a Pontiac 350 from that year? What’s the Max I can push it to and still keep it fairly “reliable” thanks in advance if you see this. Liked and subscribed!

@richardholdener1727

2 жыл бұрын

I have not done a pontiac yet

@miyeknunnaya3116

2 жыл бұрын

@@richardholdener1727 no pressure, but it would be awesome if you did!😅

You on the bubble man😅

and will bigger injectors help? Whats realy the Best cam for LT1 ?

nice video. always fun to watch. do something weird, i have an idea, 265 sbc with vortec heads, use only gm parts.

@richardholdener1727

2 жыл бұрын

I don't think the bore size will work with that head

@internallycombusted1

2 жыл бұрын

@@richardholdener1727 just stock gm vortec head with 1.94/1.50 valves, might fit? would be neat to see how much power to get out of the smallest sbc!

@bluecollarhotrods9781

2 жыл бұрын

@@richardholdener1727 - same thing I thought, 265s were only 3.5" bore, smaller than even a 305. I question weather or not even the 305 H.O. 416 castings would work on the 265.

Great video. LT4 was 330hp. Wonder where it falls in this line up

@Hapkido82AUS

2 жыл бұрын

Probably close to 400hp measured this way, and with headers and tune

@GORILLA_PIMP

7 ай бұрын

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'm thinking the (405hp net) LT5 would be around 460- 470hp with a custom tune, measured this way? Can't wait to find out ☺

What about the LT4?

very nice

Do a camaro LT1 with aluminum heads N/A with the lt4 hotcam.

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

@richardholdener1727

2 жыл бұрын

the charts are in the video

Ok a TPI 350 with Vortec Heads and Low Energy Ignition (Low Intensity=LS) system.

Personally I blame squirrels

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?

@sebastianwallace268

2 жыл бұрын

lt1 had 23 degree heads stock just like the gen 1 sbc.

@xlr8r3VA

2 жыл бұрын

@@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.

@chrishansen7004

2 жыл бұрын

@@xlr8r3VA can't beat the original small block Chevy sound though can't really find a better sounding engine than a cammed carbed 350

Never got the lt5 vs ls6

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.

@richardholdener1727

2 жыл бұрын

no Pontiacs yet

Would like to see ZZ6-dyno run ,with carb and fuel injection results too!

@richardholdener1727

2 жыл бұрын

it's not a factory motor-but I think westech has run 1

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

5.7 Hemi vs 5.7L LS1 would also be a great comparison.

@richardholdener1727

2 жыл бұрын

I think I have that

I am here ✋️ sbc fan 👍

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

2 жыл бұрын

why would we upgrade just the early motors (which was done for another vid)

@derrelcarter9401

2 жыл бұрын

@@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

I would like to see the 96 corvette lt4 engine.

LT4 versus LS1.... you'd be surprised.

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.

@coryholbrook4643

2 жыл бұрын

Aww tiger 1945 why did you delete your completely stupid post? I was looking forward to replying.

Im going with the 5.7 for the win!

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

@richardholdener1727

3 ай бұрын

LS motors have 1.7 rockers and much better heads and intake and windage tray etc...

@alonzahanks1182

3 ай бұрын

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

What about the one year only LT-4?

I'm trying see what can combo's I can throw at an gen 2 without changing to much

@richardholdener1727

2 жыл бұрын

cam and springs first-then ported heads

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 …

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

2 жыл бұрын

LT1 in 1970 did not come with Q-Jet

@lindas1st

2 жыл бұрын

@@richardholdener1727 wasnt it rated at 370 hp in the Vette and the 360 number comes from the Camaro Z28 I believe.

@FMChimera

2 жыл бұрын

@@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...

@FMChimera

2 жыл бұрын

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.

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.

@theupscriber65

2 жыл бұрын

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?

@edwardwood3622

2 жыл бұрын

@@theupscriber65 why?

@edwardwood3622

2 жыл бұрын

@@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.

@theupscriber65

2 жыл бұрын

@@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?

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

Finally not an Ls! Damn! I haven't watched any videos. But still chevy oh well.

I would like to see the old 350s run on 100 octane like we had back in the day.

@richardholdener1727

2 жыл бұрын

it changes nothing in terms of power-we had full timing

Reference: Purple sage/ 350 chevy should have made

C4 LT4 vs C5 LS6.

@michaelallen2501

2 жыл бұрын

So what do you say Richard?! Is this a doable comparison?

I really wanted a 5.7 hemi in the test too, I know this is all gm, but I am curious about how it stacks up to the sbc

@richardholdener1727

2 жыл бұрын

a modern Hemi against an old SBC? the hemi needs to be compared to the LS1

@spikestang6345

2 жыл бұрын

@@richardholdener1727 well what do you think would make more power? Stock, and modded? My money is on a hemi Stock, and a ls1 when the mods start.

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.

@richardholdener1727

2 жыл бұрын

the LT4 makes similar peak power to an LS1

@a2cryss

2 жыл бұрын

@@richardholdener1727 Can we see power graphs for both?

the old ZR-1 King of the Hill DOHC 350's were not Chevy motors, they were Mercury Marine, so there's an out for not including it here :)

@richardholdener1727

2 жыл бұрын

it was mentioned

Is there a reason you did not include the Gen II LT4? Curious how that would have compared.

@allanb3222

2 жыл бұрын

He probably forgot about that one. 🤦

@richardholdener1727

2 жыл бұрын

that will be part of it

@coreyh.5207

2 жыл бұрын

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.

Do you do gen 3 ls mail order tunes..if not who do you recommend?

@richardholdener1727

2 жыл бұрын

I'M NOT A TUNER-NOT SURE WHO TO SEND YOU TO

@dannynorman9768

2 жыл бұрын

Thank you for your time...only having start up issues

Holy crap-where did you find a LT5 not still in a car?!

@allanb3222

2 жыл бұрын

I'm sure one of his buddies at westech has one!

The most powerful 350ci built is the one you build😉

1996 Corvette LT4/350 .. Torque King below 4000 ? Best flowing Gen 1 heads n Tuned Port style manifold.

@bartpang

2 жыл бұрын

Not so great torquewise but good power.

@richardholdener1727

2 жыл бұрын

torque king below 4000 rpm with that short runner intake?

@arcdestriumph586

2 жыл бұрын

@@richardholdener1727 Didn't know it was that short.. Are the runners that much shorter than a tipical carb/ Edelbrock Performer which has ample torque?