Tech: HYBRID THEORY! Gen 4/5 LT1, LT4 and LS engine compatibility.

A video about the compatibility of GEN 5 engine parts in a GEN 3/4 LS based block. Sorry for the long video but it's packed with good info. Any questions, comment below.

[@SloppyMechanics]

cleveland head stud thing would be really cool!

[@Aseutester]

Hear Hear.

[@MrTydriver]

Holy information overload Batman !! This was an impressive display of knowledge... Thank you for sharing..

[@kevinbowers3917]

"Cut with a hatchet". Love it. Excellent info, keep em' coming,ed.

[@diyguy6054]

Best informational video I've seen in a long time.

[@Aseutester]

Great work bloke, keep us posted on this Mix and match GM parts engine!

[@mikereasoner4814]

Thanks for your time and all that information 👍

[@Mike-xt2ot]

GM should hire you. You're a secret genius!!!! Great job.

[@enigmacamaro]

with this kind of information this man need way way way more subscribers

[@johnsteenland1292]

Thehouseofboost thank you very much for making this video!! Awesome info, I'd love to see more of these!!

[@jeffgraham48]

Awesome info!!.Really cool to put info out there. Ty

[@shannonsisk]

Thank you for sharing all of this great info! 🤘

[@jaribarevalo531]

good breakdown havent seen many videos like this one

[@1panboy]

Cant wait for a new video to see how it all comes together and see how it works! Holding out till i see if the lt stuff works to build my 5.3! Pretty damn cool

[@coltnewton7368]

Awesome information, thanks!

[@davidcallahan5157]

Awesome information thanks for sharing.

[@codemanrose]

Wow. Bravo! This info is great!

[@wayfastwhitey45]

Your finger at the 6:00 mark made me laugh. Never seen one that could bend that much.

[@philbetthauser9547]

Great information! 👍

[@codyjordanful]

This is going to keep me from sleeping. i have a great hook up on LT4 rods new take outs and im just getting started on a gen 3 6.0 turbo build. cant wait to see what you find out on the balance deal. looking for pistons now. thanks for all the foot work.

[@petrieperformance2410]

Any chance i can buy some lt4 rods from you?

[@brianpowers100]

absolutely great information.

[@jasons8630]

Excellent videos brother thanks man

[@corwininadsm]

too bad you don't make more video's this is great stuff!

[@colinw7205]

Thank you Dario for confirming for me that the Gen 4 LH8 block is indeed stronger than the Gen 3 L33 block esp. as a high boost turbo platform. I was always a fan of the LS factory iron blocks for strength and cheapness but not a fan of the additional 100 lbs that came with strength. My goal is to do a twin turbo 5.3 LS swap for my Gen 2 LT1 in my '95 Caprice 9C1 for Auto X and road course track days not so much drag racing. So weight and balance is more of an issue.

[@motherlovinsnuffstar]

You're the man Dario!

[@luckautofab4461]

That's great to know 100% I had heard the crank and rods where pretty much the same.. I don't know the lt cranks where forged that's cool.. I think the lt4 rods are bigger then the stock lt1.. Same as lsa rods vs ls9 from what little I've looked into it.. now you have my curiosity level up think I'll have to research some more on this lol

[@realbigdady]

Thanks man, good to know.

[@ryanmerriott1189]

Hey great video! Can we please get a part number for the LT4 rods?

[@Dirtfloorfab]

I'm glad your back filming I really like this form of build where your making stuff work. Just curious you made the comment as long as you can keep the heads down why not use gen 5 5.3 and convert back to port Injection. I know the DI stuff is hard on intake valves but it seems the new stuff has canted valves not super noticeable but it's like 10* opposed. Also note the ports on the intake are moved upward. Also don't know if the 5.3 blocks have it (I have heard they have and haven't) but gen 5 is supposed to have piston oil squirters which will keep cylinder temp down for higher boost. Another thing that I don't know if it transferred from lt to truck block is that the head bolts are larger in size by 1mm all those things may be worth looking into. I'd really like to get the lv3 v6 for my regal wagon to have a 4.3 v6 to keep the "heritage" of Buick

[@Thehouseofboost]

Dirtfloorfab I plan to go to the LT platform in my car eventually, ict billet makes intake adapters to use an ls7 intake on a LT, they are far superior platform, they just need to become more affordable

[@Dirtfloorfab]

@@Thehouseofboost I know what you mean about the affordability part, this video peaked my interest so I quick got on car-part after to look for a gen 5 4.3(lv3) found one for 680 semi local...... It was sold... I'm kind of hesitent to dive into the v6 stuff cause I know there won't be much aftermarket for them aside from what will transfer from it's bigger brother. But someone's gotta do it I guess. Most of the l83s are going for 2500$-3000 around me which is a ways out of my reach

[@Burndown]

Nice video man! Thank you for the info! Its guys like you that make hot rodding accessible to the little guy!!! Keep it up. You doing LS Fest again in 2019?

[@Thehouseofboost]

Dane Thompson yes we are planning on it.

[@brentspence3379]

Thanks Dario!

[@Albertozco84]

Great, now I have a dilemma. Finish my 05 LQ4 or build one of these since I have a gen 4 aluminum 5.3 and the same pistons you are using. Maybe I'll start with the LQ4 and when/if dies I'll have one of these hybrid blocks ready. Thanks for the great info!

[@user-sc2ml7bd6x]

I'm in the same boat, have an LQ4 and LS1 block, want to build a bigger inch stroker for a T-56 GTO, thinking about using a Speedmaster block or GenV 5.3 sleeved or L8T bored to 4.125" and want to use a normal bolt pattern cheaper 4.125" LS crank, assemble it with cheap donor L83/L84 5.3 for the top end, sensors and everything and use Holley to control it. Because big bore long sleeve LS blocks are so much more expensive, unless the Speedmaster iron block could handle bore/stroke to 441ci since they're $1800.

[@noid3948]

Awesome info!

[@AutoBikeTruck]

Thanks for the brain work this is a great video thanks

[@Mcdashiznit]

Great stuff thanks

[@Trrhep]

very cool !

[@brianfoley1052]

this is a sweet idea!

[@allxdup1909]

Nice work mate, just a couple of things... how much piston is still in the bore at bdc? LSA & I think LT4 pistons are oil cooled... Good luck & cheers from AUS'

[@hairygreasemonkey2796]

thnx for the info

[@jimburig7064]

I have been a gearhead my whole life and this new technology has really gotten away from me in my advanced years.

[@nicolasanderson3999]

Did you ever run this thing? I'm building an LS right now for my camaro. LQ4 with LS3 crank and heads. I was going to order the summit pro series rotating setup but now I'm curious about running LT rods in it with the summit pro pistons.

[@MichaelRadelet]

I wasn't expecting a Lordco calendar

[@rkmorgan2052]

this is a big game changer

[@TheRealZJE313]

Yes this is a hole new generation of the push rods V8.now let's see if it will show up in the trucks and Full size SUV

[@rol2680]

Have you tried lt heads on ls engine? See if they bolt and also if the pushrods end in the same spot

[@liammcinerney5565]

Any idea of the compression ratio if you use the the factory truck heads from that block with the gen 5 pistons?

[@8wireracing694]

very awsome

[@user-sc2ml7bd6x]

What I have been wondering, since the Gen V blocks are cheaper now if you want to go 4.065"-4.125"+ bore size and want more sleeve to run more than a 4" stroke, at least a 4.125" stroke and if you want a normal LS flywheel/flexplate and a less expensive crank, is if I can use a Gen III/IV 4.125" crank in a Gen V block, I have seen plenty of GenV crank adaptation for earlier blocks but, not the other way around, a 441ci Gen V either a sleeved 5.3 or an iron 6.6 L8T block, even if the short block was a budget deal assembled with with everything from an L83/L84 5.3 should be a strong performer, especially now that there is Holley EFI to control it, those heads flow similar to 821/823 rec ports, you should be able to run very high compression with the DI for n/a work or use supplemental port injection with boost and have a monster well it's way to four digit power without spending nearly as much as a big bore LS since LT is.becoming more prevalent, is in.active production.and is less sought after by the hoodrat hot rod crowd right now.

[@boostwithbridge9649]

Hi Dario did you get that LS / LT 5.3 together??? I’m a GM tech and it’s the end of summer so I’d like to start the same engine build. So give me a shout if ya need anything I get parts at 10% over cost. Btw love the channel

[@gradoisx2348]

I laughed at the NFG written on the gen 4 rod.

[@brandonloll4262]

Great Info, just to clarify what oil pump gear and balancer are you planning to use then. Will you have to use LT1 stuff there? thanks

[@Thehouseofboost]

Brandon Loll I’ll be using a stock LS gear 12556582 is the part number, Any aftermarket LS style sfi balancer will have a keyway that will work.

[@shawnmccutcheon6873]

I believe that LS 7 dry sump has a double oil pump which is wider so the oil drive is thicker

[@marcusv5657]

I have a question. Can I use the stock crank with the LT1 rods & flat top pistons. Want to keep my build simple and make the engine a little more fun . I have two 5.3 LM7 & LC9 like u said. Use all GM parts . Then a nice Cam

[@598bowtie]

Awesome info! Would it be possible to know what engine those rods are out of. They are beefy for sure.

[@Thehouseofboost]

manuel ocasio lt4 in the c7 corvette

[@petejoseph8257]

GM says modular cast iron crank for the gen 5 L83 5.3L, not forged.

[@michaelcuff5780]

Well thats how most of my friends used to do. Keep all GM parts. Atleast you know some engineering went into the parts! Lol!

[@pauljanssen2624]

You can grind a slot carefully in the rod itself

[@colinw7205]

Question are all Gen 5 cranks twist forged even the Gen 5 motors that are in the trucks??

[@kevindrury8390]

Where do you get the new clips for the pistons?

[@3800TURBO]

Gen 5 rod is a monster. Do they clear the cam lobes?

[@AdamOpheim]

Assuming you wanted a high comp 5.3 could you simply drop gen5 rods and pistons in a gen4 motor? PTV issues? How did it all balance out?

[@Rodiak41]

Hey dude, I just finished slapping together my LT1 rod and 5.3 Piston bottom end into my gen 3 5.3 block. Using the stock gen 3 crank as well and 317 heads, LJMS ST4 cam, BTR 660s. Just wondering if you had run yours yet and if so, did you run into any issues with it? I havent dropped it in the car yet but the fact that you have updated this makes me wonder whether it's going to work or it's a waste of time from here forward. Anyway, thanks for the project idea. Hope to hear back from ya.

[@Rodiak41]

Right on man

[@joeyjojojr.shabadoo915]

Will the LT Rods clear the counterweights on an LS3 crank ?

[@davefossler1550]

Negative on the 5.3 aluminum block being the strongest block. LME has confirmed that the GenV LT blocks are the strongest production block made from GM to date. They have made a video showing the difference between LS and Gen V LT series engines.

[@gbsgarage]

So, is that the stock LT rod/piston (on the right) out of the L83?

[@edwardciaglia7494]

Head bolt pattern is the same as well, they just changed the dowel location from the bottom corners to the top. LS lifter trays bolt into an LT if you want to eliminate the DOD. The LT cylinder liners are cast into the block, you don’t see where the liners end on the deck. They improved the oiling, and all LT motors have piston squirters. There is also an outlet out of the back of the LT oil pump that feeds the #1 main bearing. In my opinion, the LT block is a much better platform. Bell housing bolt pattern is the same too

[@edwardciaglia7494]

You’re right, I never actually measured it. I just put them on the engine stands. Visually they “look” the same.

[@austindoud273]

@@melissahill7930 lol literally doesn't matter useless bolt

[@TheProchargedmopar]

Gen 4/Gen 5 SBE! Please let us know what bob weight they came up with and how many grams needed to be added or removed.

[@austindoud273]

Full send

[@petejoseph8257]

You can use a Viper 1/2” ARP head stud kit too but you will have studs left over and they aren’t cheap. 4 builds with Viper studs and you’ll have a free set for the fifth build, lol.

[@qxr20]

i need that dry sump crank!

[@jagunn1972]

I may have missed it but what are u going to run for timing set on the shorter Lt1 crank? i may go the same route on my Ls2 rotating assembly

[@Thehouseofboost]

Jason Baker stock upper and lower gears with a c5r chain

[@johnparrish9215]

All Forged Cranks are Twist forged. The only exception is Billet and Flatplane cranks.

[@arg8763]

That isn't true at all. Almost all aftermarket cranks are non-twist, and have been this way for years. Scat, Lunati, Crower, Manley, and I'm sure if you check around every brand you can name off the top of your head are all non-twist at this point.

[@Giftied]

so whats the likely hood of a this working in a 6.0. keep us updated on this project, super interested

[@Thehouseofboost]

Giftied depending on the piston it should.

[@Jandmonline]

THAT ROD IS IN BACKWARDS , THE RAISED DEMPLES ON THE CAP GO TO THE CLOSEST SIDE OF THE BLOCK ON LT4 ALSO ON THE ROD ARM HAS A DEMPLE ON IT AND THAT GOES TO THE FRONT OF THE ENGINE ON THE LEFT SIDE AND TO THE BACK ON THE RIGHT SIDE. yOU PROBABLY KNOW THIS AS YOU ARE JUST MOCKING IT UP BUT i THOUGHT i WOULD PUT THIS IN AS I AM BUILD MY LT4 NOW AND HAVE JUST PUT IN MY CRANK AND ROPTATING ASSY. GOOD INFO THANKS

[@thatturbotruck]

The liners aren't that thick. They are designed like a tophat, I've cut a few out recently. Toughest block is the iron 5.3 smaller bore makes thicker cylinder walls and harder material. That being said those aluminum blocks are also super tough! (some doubt them)

[@joshuacoomes6388]

Great video, but everytime you pointed at something your finger gave me chills, hahaha.

[@Thehouseofboost]

Js Coomes life lesson, don’t let the apprentice swing the hammer lol

[@raymond80hr]

my mind is blown

[@bryce1916]

The thickness of the liners is not all the way down they are thicker at the top because there is a step in the aluminum block to keep the liner from moving in the block .

[@CamaroRick]

The LT's use a Bimetal bearing, Hardly anyone makes different sizes in coated trimetal. Ended up going with King race bearings on the last LT build. Clevite said they would be out next year.

[@Thehouseofboost]

Camaro Rick King makes a LT rod bearing?

[@CamaroRick]

@@Thehouseofboost according to my machinist Ill give him a call tomorrow

[@CamaroRick]

He said he cut the tangs on LS bearings. They should have the LT bearings out by now tho

[@mgleason2542]

Looking for clarification... The block you are talking about is the LC9, LH6, LH8, LH9, LMF, LMG, LS4, LY5? Also do you still feel the block you have is the best based aluminum block for boost?

[@Thehouseofboost]

Michael Gleason yes the gen4 lc9’s are the strongest, A guy with this block went 155mph in the 1/8th which works out to 1450 flywheel hp.

[@th600mike3]

Where can I find gen V lt4 rods?

[@prancstaman]

WOW!! And that's your spare engine. LOL.

[@dangerousfreedom4965]

Link to a flex plate please

[@Albertozco84]

Any updates on this?

[@dirtymike4053]

Have you tried swapping the lt heads on the gen4?. I have a gen 3 and wondering if the l83 gen 5 lt Heads would swap onto the block.

[@codya8684]

Wanna say the lt stuff is 6 bolt heads, i maybe wrong though

[@SamuelBrownDPnetwork]

I wonder if any one ever got to complete a gen 3/4 build with a gen 5 crank...they are already using the l8t crank

[@bryanmayes9234]

This is fucking cool man

[@dangerousfreedom4965]

I wonder if any factory 6.0 pistons will work with the lt rod?

[@Dane33781]

Basically all of them do.

[@brandonloll4262]

have you got that all balanced and put together yet? thanks

[@blackwellm23]

Yea i want to know as well

[@dangerousfreedom4965]

More!

[@Thehouseofboost]

407ForRent working on it

[@clydestevens2944]

Is the reverse true? Can you use a LS crank in a LT block?

[@Thehouseofboost]

Clyde Stevens not sure but I would assume so

[@SloppyMechanics]

gen gen5 rod is disgusting!

[@TurboVisBits]

Undercut is better right? Lets oil come out properly?

[@Thehouseofboost]

Radius fillet is stronger, but undercut is easier to manufacture

[@notbuyingit8047]

Wet sump corvette LT1 is the same as camaro LT1 crank. Base c7 uses a wet sump. Z51, grand sport, ZO6, and ZR1 are all wet sump.

[@asandberg6]

Can you do a 6.0 Crank in a 4.8 for a torquey Yukon engine please?

[@Thehouseofboost]

asandberg6 that would be a 5.3, a 6.0 has the same 3.622 stroke as a 5.3, a 4.8 has the same bore as a 5.3.

[@asandberg6]

@@Thehouseofboost OK I thought stock 6L was 4".

[@FirstLast-tx3yj]

@@Thehouseofboost l92 is siamese bore right??

[@petejoseph8257]

Ok, will Gen 3-4 heads work on a Gen5 block

[@petejoseph8257]

If you re drilled the dowel counterbore on the head or the block or both?

[@hishayden06]

Can you run the truck acc and balancer?

[@Thehouseofboost]

You can use an aftermarket truck balancer that has a keyway in it.

[@Sam-hj8hy]

The sleeves are not that thick. The tops have a ridge on them to bottoms out on the aluminum when they are pressed in. The walls are probably about 1/2 as thick as you see on the top of the cylinder.

[@larryssnova76]

It’s acceptable their are a lot of bearings on some engines that don’t have locating tabs

[@TheRealZJE313]

Go watch the video of the GM Corvette engineer he talks about the new LT4 V8.no parts can be use from the LS not even the bolts

[@brianbrooks788]

I have lq4 6.0 what's a turbo for budget build thanks for any tips

[@joshuafootman3593]

will these rods work in 6.0 blocks

[@Thehouseofboost]

Joshua Footman going to try it in my next video

[@joshuafootman3593]

Thehouseofboost ok cool I can’t wait to see it

[@joshuafootman3593]

@@Thehouseofboost do you have a part number for these rods

[@mikeeagle2653]

The liners are not a quarter of and inch thick That’s only the lip at the top of the deck. The sleeves are .100 and they are backed by .300 of aluminum You can only bore the sleeve .030-0.040