Nice work Richard! The guys at Late Model Engines have told me they have been seeing more power from the LT than the LS3. Looks like your test indicates this might be true.

If anyone should be rewarded , it is that man there. Completely Awesome. I can not thank you enough.

Awesome comparison. Thanks @RichardHoldener for all that you do for the car enthusiast universe. 👍🏾

The issue with the Gen 5 stuff is that it seems to be more complex/sensitive to tuning. Even the Terminator X for the LT motors costs twice as much as for the LS stuff. VVT and DI are here to stay so eventually the learning curve and costs will flatten out but I don’t think we’re there yet.

@theyhatehimbecausehetoldth7576

3 жыл бұрын

I think going to gen 5s are diminishing returns compared to the ls when you consider everything cost wise.

@sepg5084

3 жыл бұрын

@@theyhatehimbecausehetoldth7576 it's economics. New stuff will be more expensive than old ones, and if the new stuff becomes popular enough then the prices will come down if the manufacturers develop economical ways of doing it and decide that lowering the price is worth it. The advantage of direct injection is on motors with boost. E85 + direct injection would help make the motor run safely at higher boost levels. Everything has diminishing returns. You can't apples-to-apples compare decades old tech that has a ton of aftermarket support to new tech that has limited aftermarket support. If you like old, affordable tech then go with a carbureted LS.

@Borderline5440

3 жыл бұрын

@@sepg5084 There's really no reason to run a carb on an LS. That's just a step backwards for no benefit.

@Borderline5440

3 жыл бұрын

@@theyhatehimbecausehetoldth7576 That's why a majority of people are still LS swapping and not using the LT. The direct injection more than anything really ratchets up the cost.

@timothyshearer6538

3 жыл бұрын

@@Borderline5440 kzread.info/dash/bejne/fICGw7tsn6Sxnco.html&ab_channel=RichardHoldener obviously this is only one setup, but as far as I know, carburetors and efi are very comparable in terms of performance. You do lose drivability (coldstarts, gaskets drying out) with a carb, but it eliminates the need for a fancy ecu, injectors, rails, fuel pump, etc. I'm trying to say that there are benefits to both and acting like there aren't is just close minded. Edit: found another - kzread.info/dash/bejne/d3aVztSpiZqZesY.html&ab_channel=RichardHoldener

I'm running a 6.2 LT1 in my 17' Super Sport Camaro 6 speed manual trans. Bad ass car.

It's awesome to see you run some GPI cams. They're still leading the record for power made on a SBE LS3. I'd like to see you use them more often.

@Cultofpersonality09129

Жыл бұрын

A cam is a cam. Richard has done 500 cam comparisons. Same specs produce the same results. It’s not rocket science.

I have seen some online cylinder head flow databases that show the LS3 head flowing more than the LT1. The LT1 has a smaller intake valve than the LS3, 2.13 vs 2.165". The LT1 exhaust port is lousy. The reasons that the LT1 outperforms the LS3 in factory configuration is higher compression, longer cam duration, and VVT. The LS3 can be tuned to match the LT1 compression and cam specs, but will give up some low end torque because of no VVT.

@Ws6Ms

2 жыл бұрын

Finally someone gets it

@dennisrobinson8008

Жыл бұрын

Andy I saw it the same way... The LT1 heads out the box do good up to .500" lift. Ported it's going to around 340 CFM and all of us who've been in these discussions know a good ported LS3 head can get to 300CFM by .400" and 360-370CFM... Aftermarket replacement LS3 heads such as the Mast can get up to 410 420 CFM... So LS3 has more potential if you go by the airflow. The VVT is a big deal in that it can add 50 ft-lb or so between idle and 4000 rpm, so you can run a "big" cam and have impressive torque in the driving rpm range. Also compression is a big deal and if you look on the coyote where stock gen 2 makes 400 ft-lb and the gen 3 makes 420 ft-lb, the gen 3 has 12:1 vs 11:1 on the gen 2. That's about 4% increase in torque per every point of compression increase. 4% of 400 ft-lb is 16 ft-lb, so most of that 20 ft-lb increase was due to the compression.

Wow this is great stuff. I mean really gold here haha. Thanks for putting this together.

I've owned both the GenIV and GenV engines. I take the LT1 hands down. It's much easier to drive even with power adders. The direct injection is more accurate. Plus, the LT engine will get a touch better fuel economy.

Those LT1 NA power numbers are amazing. WOW......

@hoonaticbloggs5402

3 жыл бұрын

The low torque is lovely. Vvt

@Charlie_Prinz

3 жыл бұрын

@@hoonaticbloggs5402 Best of both worlds, for sure! :)

@malamri424

3 жыл бұрын

numbers are higher than usual because of the way they run the dyno, i.e. long tube headers, no mufflers/cats, open throttle body, and low fluids temperature

@Prestiged_peck

3 жыл бұрын

@@malamri424 and? Compared to an LS3 it's still a massive improvement

@jaydubb71

3 жыл бұрын

Yall be sure to remember this fun fact. LS3 compression ratio is 10.7:1. LT1 compression ratio is 11.5:1. That's a BIG contributor to the power of the LT1 and Direct Injection is the ONLY reason why the LT1 can run 11.5:1 compression ratio. Injecting the fuel into the chamber COOLS THE AIR IN THE CHAMBER THAT WAS HEATED UP DUE TO COMPRESSION. I wish I could find that article explaining all of this. I read it a few years ago. When I find it, I will post the link here. And for your reading pleasure... L83 = 11.1 CR L86/LT1 = 11.5:1 CR LT4 = 10:1 CR L8T = 10.8:1 CR I can't wait for the price fall...

Thanks Richard! You're always a wealth of information!

I learned that the modified LT1 makes BBC454 numbers and curves. The variable cam timing makes the entire curve 👌🏻

@hanzen5174

2 жыл бұрын

also high compression with direct injection

@horsefly1020

2 жыл бұрын

@@hanzen5174 yep and pump gas without detonation

@cali2468

Жыл бұрын

DI adds to it as well

@timbowalk

Жыл бұрын

A 5.3 LS pumps out BBC power

Ok thankyou so much for this... when buying an LS3 camaro it will be cheaper than a LT1 camaro to begin with. Now I can consider these mods on an LS3 camaro that is plenty enough HP 620 and 515TQ for me WOW!! And If a competitor comes around me with this setup then hes definitely earned it!!! Bang for buck I guess what I'm saying👍👍😁😁

Awesome job Richard! You tempt me to modify my 18 Denali 6.2…I just need another 100 ponies is all😊

When it's clean sheet like me there is about an $800 surcharge for DBW, DI and trans control ( my 67 Camaro has a 4l80e/billet lock up) on the Holley with 3.5 inch screen and VVT ( Cam 4X even less). Given the fact the stock heads will do well especially when ported ( you can tell this is what they wanted to do with the LS7 raise that runner NUTS like it is on the LT1, but they never got the LS7 right ) I'll actually be saving.... Also the fact I can buy a 3.860 L8T forged stroker ( center counter weighted too ) crank for $500 and it slide right in the Gen 5 block makes it just piston and rods for me to be up near 700hp... I've been looking and looking as I AM replacing a BBC I'm used to making 700+ hp with, it is HARD to find a 600whp Gen 4 LS..... I was quoted doing a custom darton sleeve 5.3l Gen 4 block to 4.155 and custom 4.00 rotator...then the best heads money can buy ( generally have to go LS7 and their intake ) and at 434ci barely be 550whp or 650 flywheel.... The Gen 5 can do it at stock bore with the 3.860 crank for 400ci aka 6.6L, with much less cam and save a TON on heads... So more power, smaller cam less money from clean sheet and literally can run to 9s aka illegal in my old 67 NA...works for me...im not scared of DI...I just come from a boosted Gen 3 coyote and I'm used to dealing with the DI and tuning the blend..... Other than pure budget gap n go turbo stuff I can't see why anyone would still mess with the Gen 3/4....the stock crank on Gen 5 is stronger too...heads better...even better than LS7 when you count the LS7 failures that even the aftermarket doesn't have solved in my research.... I'm leaning heavily to Gen 5.....

Have any data on a stock L99 vs LT1? Both have VVT. By the way...same question as before on the live stream. Does BTR have any VVT cam's in store for the L99?

Was REALLY hoping you'd put the L86 manifold on just for fun. Make a budget torque-beast build video with an L86/LT1!

Put them both on E85 and watch the gap widen across the curve in favor of the LT1. 91 octane is limiting the LT1 quite a bit. Either way they both are worthy engines and the LS3 is easier to work with...also easier to swap into older vehicles.

@hanzen5174

2 жыл бұрын

may I ask why on your final point

@Cultofpersonality09129

Жыл бұрын

Fail.

Would like to see some LT1/L86 cam, cam/ ported heads comparisons, cam/heads and some intake combos. Please

Your comparing red apples to green apples make it make sense 😦

Ported heads and a compression bump are needed on the LS3. Even playing field from there.

Can't wait to see a 6.6 L8T test

@trashbandit2449

3 жыл бұрын

Yes please! So excited about this engine

@austintyler7991

3 жыл бұрын

For sure 6.6 will be beast w the Richard Holdener upgrades :-)

@aimxdy8680

4 ай бұрын

Hands down strongest chevy engine ever made!

lt motor is nice but more cost to build more complex more likely to break .i think ill stick with my ls3

I think until 6,000 rpm.... that LS3 was definitely holding its own. So with some different parts yeah it’s a contender

@kennethpowers8995

3 жыл бұрын

Lol; With some different parts a Gen 1 SBC would be a contender.

@Lagrange1186

3 жыл бұрын

@@kennethpowers8995 agreed

@75zl1

3 жыл бұрын

Until 6000rpm the ls3 was being walked on if these were in the same car. 50ftlbs of torque at 3000rpm is large difference.

@ShawnGilbert1967

2 жыл бұрын

You just never see remotely streetable or even at all 600whp Gen 4 stuff...I was quoted a 434 Darton sleeve combo and it was gonna take a LS7 top end to try....and way to big a cam for my liking...

@dennisrobinson8008

Жыл бұрын

The 50ftlb is due to vvt

Started a new job recently(Architectural fab)All the guys warned me about the head shop lead. I was talking cars and engines with this dude, and he responds with "I'm not into cars at all." It all make sense now. Lol

Direct injection allows you to run higher comp ratios on pump gas than port injection. 14:1 comp ratio on E85 direct injected motors is very doable, and 12.5:1 on boosted E85 DI motors is also doable, of course with a good tune.

@cali2468

Жыл бұрын

Yes!

The LS is not dead. Yet.

Thanks for all the knowledge it’s just upsetting that the original lt1 was a 350 right. It’s just like ls1 was a 5.7 just like the 350 was a 5.7. I’m just glad that the ls exhaust ports are spread apart not like the 350 heads where the middle ones are close to gather and robs it’s power.

I would like you to do a test on the Gen 3 hemi 392 factory 6 speed cam with boost and then a Comp Cam 274 with boost....I bet the out come would be surprising

Great comparison. Both great engines. The gen v is so impressive. I have the gen v 6.2 in a Yukon Denali with a tune, basic stock exhaust mods, ported throttle body and 8l90 trans. 5900 lb with driver and consistent 13.20 et. It gets 22 mpg average.

@james10739

3 жыл бұрын

13.2 is pretty good for something that heavy

@jonmac155

3 жыл бұрын

Baller. Very impressive. MPG and Speed. Plus room in the back to sleep off a bender cause the wife doesn't have a sense of adventure or humour. Cam it and pin unruly kids to the rear window.

@Wilson-cp4gx

3 жыл бұрын

@@james10739 The 8 speed is a big part of the et. It’s clunky at parking lot speeds as many have experienced, but it hits the sweet spot for torque when shifting at 6k rpm and uses the hp at the top of each gear as well. Gm did a good job on the ratios, but it’s the clunkiest factory trans I’ve ever had.

@paulbrinker482

3 жыл бұрын

James, did the tuner help smooth out the clunky trans? I have a 15 sierra with the same motor/trans.

@Wilson-cp4gx

3 жыл бұрын

@@paulbrinker482 It didn’t change the occasional unexpected 1-2 or 2-1 shift and “clunk” below 5 mph. It does shift great other than that. Very firm with the tune and I like that.

I love my 800whp ls3 however i am intrigued about lt1 thicker block walls, does it ad more rigidity? Maybe more peak hp?

Man! Great info

i want either of these engines !!!

That LT1 is really impressive, that low speed torque is key in a street car, it’s still down from a good big block below 3500 rpm, but then it comes alive

@adamarndt7617

3 жыл бұрын

Yep. I’d love to see the Holley “dual plenum” cross ram adapted to fit on LT heads. Would be a torque monster down low and in the middle!

@ShawnGilbert1967

2 жыл бұрын

Yea but as someone switching from badass BBC that LT1 is gonna be 300lbs lighter....that evens the playing field...

@gloriamaletta8667

Жыл бұрын

I wouldn't worry about anything under 4500rpm with this modified LT1 it will be needing a 4400-5000rpm stall converter to take full advantage of this setup it has enough low end grunt from idle to 3000rpm for cruising or normal street driving and yes it will be a bit soft with a 4400-5000rpm stall converter from idle to 3000rpm it will rev extremely fast at the slightest push on the gas petal and go into lockup at cruising speed at 45-50mph depending on gearing my car has a 4200rpm lockup stall converter with a 6L80e transmission it's soft until 2500-2600rpm and goes into lockup at part throttle or street driving in 5th gear at 40-45mph and 6th gear at 50- 55mph at part throttle feeling no more affects of the stall converter unless the throttle is pushed down more while at these speeds it will unlock with a very little bit more throttle pressure on the gas petal

Everyone else "im a lock out the vvt" 🤦‍♂️

@Jr_5646

3 жыл бұрын

Yea you should only do that if you run a big enough cam where piston to valve clearance becomes an issue.

Be cool to put those lt heads on the 6.2 Ls and see how close it comes with the smaller chamber

I have a 2018 6.2 lt stock minor upgrades and honestly can tell you , its a torque monster.

Please do a mild VVT cam in the Gen V L86 or LT1. Use both 6.2 L intakes and maybe the Gen V LT2 intake ~IF~it bolts up. Im curious to see if GM did as good of a job on the LT1/L86/LT2 intakes as they did on the LS3. Plus that BTR intake killed the GenV torque. After these are done, do a LT1 416 stroker with a mild/street cam. The optimized stock engines dynos were real good. The Gen Vs was a torque monster. I am getting tirred of asking for the 416 GenV , so please just do it, LOL. Keep up the great work Ricjhard.

@richardholdener1727

3 жыл бұрын

I HAVE LT INTAKE VIDS UP

@jimstover6747

3 жыл бұрын

@@richardholdener1727 i seen it. thanks

I would love to see the new 6.6L direct injection motor

@richardholdener1727

3 жыл бұрын

yes

This is a great review. I'm trying to figure out which e-rod motor to buy the LS3 or the LT1 for a 1990 short bed pickup truck. I like the idea of the extra torque down low but not sure the added complexity of direct injection and variable valve timing is worth it.

@biggregsparks8364

Жыл бұрын

ls3. no vvt or cylinder deactivation. no collapsed lifters. plus, they only come with 6 speed manuals in the camaro. the automatics are the l99 with all the vvt and stuff. an ls3 with 430 horse dynos at 370 rwhp, while the 400 horse auto only has 320 rwhp. the manual is much stronger and way more fun

Doug from Motion Raceworks was or is running a Gen V in his Nova. But if I remember correctly he’s built the bottom end and I’m not even sure he’s still using direct port anymore

I saw a video of a guy explaining that Direct Injection engines were problematic and he recomended port injected like the LS3. It was something about not cleaning the residuos of the valves and that in time will degrade de engine.

@richardholdener1727

Жыл бұрын

valve build up is an issue with di

The Lt1 gains were a little bit down on what I expected. Clearly pretty good straight from the factory. Would expect the Ls3 to make more power than the Lt1 if it had all the good life affirming parts you listed added on to it.

@andyharman3022

3 жыл бұрын

More power is life affirming..... I like the way you think.

I'm running an ls3 stock motor, pac 1218 springs and twin low mount Chinese t3/t4 turbos making 620hp on the factory ecu @10psi and on uk pump gas :)

If you ever come across one, I'd love to see you do a comparison of an L76 6.0L all aluminum truck engine with VVT vs. Maybe a Gen 3 6.0L or maybe the LT1 or one of the 5.3 variants to see How it compares and responds with VVT cams.

@richardholdener1727

3 жыл бұрын

I ran an LY6 (iron block version) but have not run it with VVT

@erichoward8463

3 жыл бұрын

I have an L76 in my GMC Sierra and always wondered what it's power potential could be. It runs so good in stock trim with a little help from headers (and exhaust) and a power programer and throttle enhancer.

I think milling and porting the factory heads on the LS3 will make it a closer match up. Still hard to beat that VVT stuff. GPI is getting it in tho...

@rustysausage69

3 жыл бұрын

Yup. And whatever way you decide to do to close that gap, it will still cost less than an LT1 dropout lol Also keep in mind that the first thing thats done with any sort of decent camshaft upgrade is VVT delete. Piston-valve clearance is TIGHT from the factory on the LT stuff so theres not as much wiggle room.

@jaydubb71

3 жыл бұрын

@@rustysausage69 #AGREED. I'm sticking with the LS stuff. Tuning the LT stuff is expensive also. It's just like when the LS stuff first came out. It made way more power than the Gen 1/2 stuff and was expensive. Eventually the prices will fall but for now, I'm staying with the LS stuff.

@rustysausage69

3 жыл бұрын

@@jaydubb71 Exactly my thoughts too. Ill make my way into LT when the time comes and the aftermarket REALLY makes the fuckery worth it, but right now the power gain is definitely not worth the price hike.

@cali2468

Жыл бұрын

Made my way into the Gen V stuff and never looked back.

Have you thought about seeing what you can do with the 6.2 l99? I have a completely stock lower end, heads and cam l99 in my 2012 Camaro SS with the addition of fuel pump 1000cc fic injectors, e-85 and a 2.9L Whipple supercharger. My tuner was amazed at how much more rear wheel power he was able to get out of it as opposed to an LS3 with the same setup. He did a safe tune, but was able to get 670 hp at the rear wheel. I've been having some transmission problems that I will be fixing shortly, but still am running a 10.85 1/4 mile with vvt still active.

@richardholdener1727

8 ай бұрын

why would that 6.2l make more than another 6.2L?

Please continue this testing with the LS3 I have an all motor combo LS3 with GPI SS4 NFC Cam, 821 Casting Heads Ported by GPI and milled .120 with Flycuts .150 deep Looking to go with dual 4150s or 4500s, go to 2” headers, electric water pump, and crank scraper I think the Gen 4 can compete but the Gen 5 are just great for NA power.

@NA6SPD

3 жыл бұрын

Never Dyno’d after milling heads Just basic heads cam Fast Lsxhr manifold and 1 7/8 headers made 540 at the ground

I would love to see a ford 300 i6 done bone stock Then run efi manifolds Port fuel injection And a cam with this spec 268 advertised duration 208 intake at 50 212 exhuast at 50 477 intake lift at 50 488 exhaust lift at 50 110+4 Then Put twin turbos on it that will make peak boost at 4500 up And if you can run coil on plug with megasquirt or aem or something and then compare it with a twin turbo or turbo 302 sbf you've done, 300 6 vs 302 SBF Will need to replace the pistons with new hyper or forged, Arp studs on everything and bigger valve springs and your set

There is something bad with direct fuel injection? I saw a toyota 2urgse they swapped for a race car and they deleted DirectInjection

On Camaros, i'd be perfectly happy with either 6.2L. That much lighter, dialed in 6th gen platform shared with the LT1 makes far more difference to me than subtle numbers differences from either of these great V-8s. 99.99% of my driving will be on the street and not track, so easy decision here.

Any thoughts if you ran an l92 with ported heads, same compression and a similar spec vvt cam? I know l92 is down slightly in compression from the ls3

@Hitman-ds1ei

3 жыл бұрын

Ben diesel I'm running an L92 with Howards cam 190866-13, comp cams shaft rockers ( branded) gmpp cnc heads ( no longer available from S&D ) 030 cometic gasket, fast lsxr intake, 102mm tb, 1 7/8 ceramic coated headers thru a Leno which are not HP friendly and makes at the wheels on hub dyno, 519.5 HP @ 6748rpm and 434ftlb @ 5651rpm, so I think the 6.0L is still competitive JMHO experience FWIW

That torque difference in stock form is MASSIVE lol. I can't wait to see a tall-deck 500-inch LT1 that retains VVT and VCT. You could get a MONSTER motor out of that if you ran it on E85 with 13:1 compression or higher. I wonder if you could reach 800 lb-ft and 1000 hp...

having an LT1, I'm curious on going supercharger or TSP cam/heads combo. Still not sure.

@sariahreigns3666

2 жыл бұрын

I have a pro charger TSP Headers AWE catback and i make north of 600WHP on 7 LBS and E85. But i dont know if i want to just go all motor especially with the EPA becoming radiculized. Hard to hide a pro charger. easier to hide all motor mods.

Richard, Which factory exhaust manifolds flow the best. My 07 HD 3500 LY6 has 3” out of manifolds through the 2 cats and then Y’s to 3 1/2 out the back. Would like to see a test if possible.

@richardholdener1727

Жыл бұрын

MINIMAL CHANGES IF ANY-LONG TUBE HEADERS ADD POWER

Hey Richard, I'd like a recommandation to select a good cam for my grocery getter, tow vehicule (2007 Suburban 2500 with LY6 stock ls3 springs and converter). I'm hesitating between the Lunati Low Lift Stg2, BTR Truck STG 2 or Summit 8701-R1. Thanks for your input. Cheers

@richardholdener1727

3 жыл бұрын

THEY ALL WORK-BUT ARE YOU GETTING RID OF VVT?

@applebitefool

3 жыл бұрын

@@richardholdener1727 Yes sir! That’s what most people seem to recommend

Richard Holdener hope ur doing well. Aluminum block 4.3 V6. Did factory produce in last 10 yr ? Thanks great work brother keep it coming.

@richardholdener1727

3 жыл бұрын

is the new one an alum block?

@austintyler7991

3 жыл бұрын

@@richardholdener1727 i don't know. Guess i can call GM maybe they would know lol. Have great weekend brother

Richard, this might be a dumb question, but on the LS engine tests which weight of engine oil do you use? Brand ?

@richardholdener1727

3 жыл бұрын

I NORMALY USE 5W-30

That lt1 is so impressive

Right on

Hey Richard. The moded LT1 was a disappointment IMO considering ported heads and big cam. The LT1 lost ~70 lb/ft @ 4000 and had lower peak torque? If the cam was bigger on the LT1 wouldn't BTR have had to lock out the VVT? Would that explain the huge loss in torque?

@dennisrobinson8008

Жыл бұрын

VVT is used to boost low rpm torque. Its a big deal like 50 ft lb on a 6.0L engine. It doesn't boost peak torque.

I choose ls3 all day and twice on Sunday. Dont even want to mess with the cam timing on the lt1

Something that's an running argument Reversing the pistons That on Chevy, ford, mopar would make a decent series of videos

@richardholdener1727

3 жыл бұрын

that test is planned (on 1 motor)

So Richard when are you going to wear the new shirt Lisa made you that says "wrong heads" ? Lol...

@OOICU812

3 жыл бұрын

Another one should say "wrong cylinder."

How do you keep DI intake valves clean though. Even with a catch can over thousands of miles they develop deposits. The high pressure fuel pump and injectors are a PITA to change.

@richardholdener1727

Жыл бұрын

WATER METH WOULD HELP

I have an LS3 with ported 243 head and a bald eagle n/a cam. forged flat top pistons .20 over 92 mm throttle body and tbss intake, texas speed springs etc. where do I fit in power wise?

@richardholdener1727

2 жыл бұрын

have never tested that cam-but mid to high 500s if the heads were done correctly

I have a 54-469-11 cam, but has a 118 lsa. Is that a misprint on my end or yours? It would sound better with 113 lsa I think.

@richardholdener1727

3 жыл бұрын

they don't have a 118 lsa

Hello , thanks for the video ! I have a bone stock 21 Camaro SS 10speed and was thinking about going full bolt on but wanted to keep stock cam /heads for now , does the btr manifold make good power with the stock cam ?

@richardholdener1727

2 жыл бұрын

you don't want that manifold on a stock motor

@houstonmade8327

2 жыл бұрын

@@richardholdener1727 why you say that ? As far as performance wise what’s the best intake manifold to but on the stock motor? Rn I just want my lt1 full bolt on but probably next year I’m going to do the heads cam .

Do an L92 WITH VVT and factory ECU. I know you did an L92 with a 6 liter can but I feel like you left power on the table with that set up.

Does anybody make a higher velocity smaller port head for the LT? Like to see that with a slightly smaller cam. Great mid-range and wouldn't sacrifice much on the top?

@shaadydog1

3 жыл бұрын

Edelbrock has heads but to get more flow they decided to rearrange the exhaust too, so an expensive header is required too. Probably not a big deal in cost ultimately but probably a turnoff for most.

@shaadydog1

3 жыл бұрын

Ohh, forgot about CID and apparently MAST Motorspirts has LT heads now too.

Compare LS 600+hp vs 600+ NA Big Block. Put both into same car using same transmission,rear gears, and see which has the fastest 1/4 mile et trap MPH. Battle of the LS vs Big block which of the two will win?

@austintyler7991

3 жыл бұрын

I think the extra torque BBC will win. same Hp w maybe 50lb ish extra tq ? Just my opinion. I'd love to put 620hp LS in my drag S10.

@popduce841

3 жыл бұрын

@@austintyler7991 it will be very interesting Comparing the two different motors/engine's in the same car.

I'm looking to build a stroker version of the Gen4 6.2, wanting to put the 469 cam in it, but I notice the springs referenced in this video (26918) have a max lift of .625, isn't that cutting it a bit close?

@richardholdener1727

3 жыл бұрын

yes it is

@jizomeovonsteelwind

3 жыл бұрын

@@richardholdener1727 is there a benefit to running those as opposed to the ones comp recommends? Thanks

I just bought 2016 Escalade which has the factory rated 420HP 6.2 . I wondered why this motor has the same horsepower as the previous gen Escalade.

@Richard Holdener have you done any LT heads on LS blocks? I see BTR is working on some testing, I would love to see an LT headed LS3 Dyno!

@richardholdener1727

Жыл бұрын

BTR has done that

@dahliametal

Жыл бұрын

@@richardholdener1727 do you have any comparison information on potential power gains between LS3 heads and the LT heads? I'm curious if the LT heads would be a performance upgrade or is there any benefit to them on an LS based engine. Thanks for your reply!

Even displacement, airflow, and optimized tune should have close to the same power when modified.

@Jr_5646

3 жыл бұрын

The LT would still make more power because of VVT and Direct injection. Although, depending on the cam duration, you might not be able to use the VVT.

Hi Richard. I'm from Poland, I watch your videos on YT. I have a Camaro SS, 5th Gen with L99 engine. You are an expert in this field, that's why I have a question. My engine has been damaged (a hole in the block) I can buy a C7 LT1 6.2 block, can I transfer the crankshaft, pistons, heads and other components from the L99 block to the LT1 with some minor modifications? Regards. Alex.

@richardholdener1727

11 ай бұрын

I don't think that will work

GREAT VIDEO RICHARD!!!! BITH ARE GREAT MOTORS!!! IS THE LT AVAIBLE IN THE JUNKYARD TODAY?

@richardholdener1727

Жыл бұрын

LOTS OF L83S

Richard, What about Building a Dart Boss 302 with all the Good stuff, Carol Shelby and Ford didn't have in 1970? if you did a Video can you get me a link?

@richardholdener1727

3 жыл бұрын

The Boss 302 already had a good block.

@vernm6189

3 жыл бұрын

@@richardholdener1727 I know, I run one in my 1965 1986 to 92, it was a D1ZE block, just wanted to know if you tested a better newer version of it?

Where can I find a motor /trans for a swap that will be dependable that wont break the bank

@richardholdener1727

3 жыл бұрын

junkyard

I think it’s not that much of a difference, if you go with a ported head on the ls3 I think it would just be making a copy of the lt1. The variable cam timing would be the only difference and that still isn’t too significant in my opinion. That makes me wonder, can lt1 heads fit an ls3?

@balance_it_all_out3688

Жыл бұрын

They will with a little modification Brian Tooley has a video on channel

Okay bud. I've been meaning to ask. I thought you were going to start producing your own Cams and lately it's been a lot of BTR love. Did I miss a memo?

@richardholdener1727

3 жыл бұрын

no production cams-maybe some left over test cams

@lestermoore9863

3 жыл бұрын

How much for a ls test cam

Looks like the LT1 made more Torque in stock configuration than with the bigger cam and heads

Bring back the rv 440! Sincerely the other guy... I have basically the same setup in my 69 f250 highboy with a high rise 2x4 setup and after seeing that video wanting more!!!

As the graph shows. I clearly see the power increase for the ported heads and larger TB. Id be willing to bet...a gen 4 would match the power numbers with the same mods. The low rpm torque is a direct function related too the direct port injection and higher compression. All in all they are the same engine. To take advantage of the gen 5 direct injection. Your compression could be much higher. So the only component that is actually a improvement for the lt1 is the ability to support higher compression. The hp in this case is strictly from the ported heads.

@Ws6Ms

2 жыл бұрын

@@bigboreracing356 LMAO

I recently purchased a LT1 6.2 and I was thinking about putting it in my drag car…. Any suggestions as to what I should do to get the most power out of it? I haven’t seen anything like “the Big Bang” on them…

@richardholdener1727

2 жыл бұрын

check out what BTR is doing with them

@andrebooker3519

2 жыл бұрын

Do you have a site that I can take a look at? I have googled and searched for a btr build but I can’t find the build

You should do a build on one of them lv3 4.3

@austintyler7991

3 жыл бұрын

Are some the 4.3 aluminum block ?

On the Gen 5 5.3 going with a BTR stage 4 cam do you think there's any possible way to get a small Dremel tool through the spark plug hole 2 Notch the piston?

@richardholdener1727

3 жыл бұрын

no

@MB-ib5ji

3 жыл бұрын

@@richardholdener1727 I like that very definitive no. means never try it compared to well maybe you could ect....

@shaadydog1

3 жыл бұрын

Nitchingbis done through valve location with a cutter, backyard diy guys have done it with a junk valve of the appropriate size and course sandpaper on the face to notch with.

@ssoffshore5111

3 жыл бұрын

@@shaadydog1 What are they doing about getting the crap out of there afterwards, just blowing it out as good as possible? Sounds super sketchy...

If both motors had same compression, head flow and cam specs, they would make the same peak power & torque. The only caviat being the LT1 will make more average power (better down low) because of the variable cam timing.

@hoonaticbloggs5402

3 жыл бұрын

If they were exactly the same, they’d be exactly the same,no ?

@Jr_5646

3 жыл бұрын

Im not so sure. I still think the LT would still make more because of Direct injection. If the heads flowed the same on a flow bench, then the LT would make more power when on the car, because it wouldn't have to flow both air and fuel through the intake ports and into the cylinder. That means no air is being displaced by fuel. Also, DI cools the cylinder allowing you to run more timing.

LSA; 100% Stock Heads, Stage 1 Cam,Jokerz Ported Blower, E85, 16.5 psi boost.......780rwhp

The guys at Katech have made 800hp out of a 427 LT1. I think the LT1 has some pretty good potential. Is there a similar Coyote series comming ? You did a couple of vids, but nothing quite so extensive.

@trashbandit2449

3 жыл бұрын

NA? Impressive. Crank?

@suttonracing2957

3 жыл бұрын

@@trashbandit2449 yes

@ShawnGilbert1967

2 жыл бұрын

And I was quoted needing a darton sleeve 434 with LS7 top end to be over a 100hp LESS than that on Gen 4.... I think since it's a clean sheet retrofit, I'm going to go GEN 5, not scared of DI just did a Boosted Gen 3 coyote, use their cheap forged center counterweighted 3.860 stroker crank in the stock 4.065 block for a 400ci and use the stock heads but have em ported....good piston and rod...be done with it...

My Lt1 trans am would pull like a freight train from 0to60 it was plenty fast enough for the street. 😎

What did you use to control the lt1 with? I didn't think the holley hp could support the variable valve timing.

@richardholdener1727

2 жыл бұрын

it was done at BTR with a Haltech

@stephenhodge6441

2 жыл бұрын

@@richardholdener1727 awe that makes sense now. Thanks Richard!

Stock lt1 impressed. Modified lt1 not so much ill take a simpler ls3 to Modify for now.

What are the hi ram cam specs??

When the LT1 came out, I remember an article about how close if not better the LT1 was than the almighty LS7. Maybe do a comparison with those if you have the info. Thanks for all the great content.

@Jr_5646

3 жыл бұрын

I'd say it's not quite on the LS7 level, but its pretty damn close. The LS7 was ahead of its time in my opinion though. Could you imagine a modern LS7 with VVT and direct injection? 🤤 Heads/cam C6Zs are still fast as hell even by today's standards.

@bill2178

3 жыл бұрын

@@Jr_5646 you mean like. the l8t

@Jr_5646

3 жыл бұрын

@@bill2178 I dont know much about the l8t, but it doesn't seem like a high performance engine comparible to the LS7 to me. The LS7 was based off the LS1.R from the racecar. The l8t is an iron truck engine. The LS7 had an aluminum block, titanium rods and valves, and could rev over 7,000 rpm. A modern LS7 would make way more power while being way lighter IMO.

@bill2178

3 жыл бұрын

@@Jr_5646 it wont make as much but with the right cam and intake im pretty sure it could be somewhere in the middle between lt1 and ls7

How about ls3 with lt Pistons?

I just picked up a 2018 GMC SIERRA Denali with the L86. This video makes me sad. I just realized the 429 stroker LS3 in my 2010 Camaro SS makes about what a heads/cam/intake version of my truck motor would make. That makes me happy at the same time because my truck will be way better after headers and a tune.

If you are on the fence between these two engines get the ls3. You dont want direct injection.

I have a stupid direct injection question; Since the engine is detonation-proof and has piston oil squirters, does that mean that I can cruise with a super lean air/fuel mix??? A Hot Rod getting 30 MPG would be pretty cool.

@richardholdener1727

3 жыл бұрын

NOTHING IS DETONATION PROOF

@mr.know_it_all

3 жыл бұрын

lt4 corvettes gets almost 30mpg with a 7 spd manual.

@andyharman3022

3 жыл бұрын

If you could tune the engine to operate in lean burn stratified charge mode at part-load conditions, you could improve fuel economy. GM doesn't do lean-burn with the factory tuning on the Gen V engines. They run stoichiometric at part-throttle, but don't inject until after the valves have closed. This is called closed-cycle operation. You could get stratified charge operation and operate at very lean conditions (22:1 A/F) by timing injection to late in the compression stroke, maybe 25 degrees BTC, then fire the spark plug at 20 BTC. This engine would be detonation-proof (at least at part-throttle) because the late injection assures there is no fuel in the combustion chamber except in the vicinity of the spark plug. To get maximum power, though, the engine would have to revert to homogeneous charge operation, and add full power enrichment. Tuning the transition from stratified to homogeneous charge would be tricky.

Now do a big bang shootout between the two lol.