BTR LT Head Swap With Brian Tooley

[@mikecunningham5686]

Some companies continue to rest on their laurels from days gone bye! BTR continues to find new approaches that improve power and reliability! Thanks to the entire team at BTR!!!

[@Mp-bk8dm]

So they better than running some Frankenstein's ?

[@kylemilligan752]

About 3 years ago I pulled the intake off an L83 5.3 and fell in love. Bought some heads. Thought this is the perfect 4.8/5.3 ls head swap. Holley had port injected high-rams available. Cam Motion then said $850ish for a lets-get-started billet grind.I realized I don't have r&d money, and moved on. Glad to see you guys are making it happen. Lt heads on ls 4.8/5.3's is gonna make hp

[@jamesgravel7755]

Dude!!! That’s awesome. In 2016 when I pulled the first head off a new corvette I was like these engines are gona make so much power and first thing I wanted to do was slap some gen 5 heads on a LS3. Now that can be done. Awesome!!!!

[@ibanez741852]

I didn't know people were putting gen 5 heads on gen 4 engines. Awesome

[@fasnuf]

Same, but man what a pain in the ass. All the conversion parts needed, must be a pretty hard to find parts. I never heard of anyone selling genV headers that fit my Camaro running the GenIV engine.

[@joeyjojojr.shabadoo915]

GenV Bolt-On life is sweet. For the typical N/A build, it literally takes nothing more than a set of long tube headers and possibly exhaust, an LT2 Intake Manifold from a C8 Vette (cheap and always available, 1-3% worse than an MSD that costs TONS more), a camshaft and springs and maybe a throttle body upgrade if you are feeling generous. The LT1 is a monster, even in stock form and requires very little to 'wake it up'. Direct Injection and LT Cylinder heads are the magic icing on the cake. High compression and awesome aftermarket-type flow from OEM heads. If you think the OEM LS heads are good, just think of the difference between a SBC Vortec Head (the best late OEM head) when compared to an LS Cathedral Port...... and it's literally the same when comparing that LS1 head to an LT1 head again.

[@Macburton96]

@@fasnuf what Gen Camaro you running? I’ve been running this Gen V swap before it was a thing I can hook you up if you have questions

[@SamCarGarage]

​@@Macburton96hey I am running this setup as well. How did you run the "steam port lines" since the LT heads don't run steam ports I'm trying to decide on what to do about it.

[@Macburton96]

@@SamCarGarage I didn’t bother with the steam lines, even when I was running my LS set up I just capped I’ve never had any issues

[@chesspiece81]

I can't wait to get a Gen 5 powered vehicle to build. After reading about the L8T I really want to get a 2014-2018 RCSB and pull the L83 and swap in a L86 or L8T with some better internals, heads, cam, and Whipple or maybe the Escalade V supercharger is it becomes available at a reasonable price.

[@ElectricBlueIX]

I had no idea this was even a thing! Wow. More to look forward to when I get another 5th gen Camaro. The LS3 is an amazing motor but full bolt on you’re basically limited to 500ish whp max. This definitely adds the bump it needs.

[@briantooleyracing3554]

Link to the camshaft on our website: briantooleyracing.com/btr-lt-head-swap-230-camshaft-for-ls-engines.html

[@scottrussell2281]

Holley is supporting the L86 with the Terminator now. I wanted to build a competition ski boat engine with a larger cid (i.e. 427) LS short block, and the goal was to make an torque gorilla that made peak torque around 4000-4200 rpm, is that something you would offer a cam for? or would be possible to put the stock L86 heads on an LS block? I'm thinking a factory longer runner intake would be best for this application, but I'm open to suggestions. The idea would be to build an engine that would produce north of 550 ft lbs of torque at a peak of 4000-4200. The current marine (ILMOR) 6.2 with direct injection produces 479 ft lbs at 4200. I'm thinking that by taking the bore to 4.125" and the stroke to 4.00", the additional torque is a given without doing much cam wise over the stock L86 cam, but I don't know if is compatible with an LS block?

[@jamiel9902]

So what I hear you saying is, “just get a gen v engine.” Got it!

[@Sleeperdude]

Great information thanks for sharing

[@GamerPro-nw5lf]

Is it possible to put the Ls family head on the gm 151 engine (iron duke), which is basically half of an lt v8 small block?

[@briantooleyracing3554]

I have no clue, but the bore centerlines on the iron duke would need to be close to the LS/LT/SBC 4.400", and I'd bet it has a far narrower centerline than that.

[@GamerPro-nw5lf]

@@briantooleyracing3554 according to what i saw on a website, the ls2 gen iv small block uses the same cam-in-block architecture and 4,400 bore centers, and the website says to be details features shared with the first small block on its release in 1955. So if so, can the ls2 engine head fit the old gm small block v8 or even the gm 151 (iron duke), since it's half of an old gm small block v8?

[@ricoturk757]

Wonder can we get that cam in custom grind for more aggressive applications

[@Macburton96]

What are you running for accessories? The Gen V heads stick out further than the Ls heads and the bolt holes aren’t the same orientation, and Ls/Lt waterpump and accessories aren’t interchangeable have you had the engine complete dressed and in a vehicle or just dyno?

[@briantooleyracing3554]

Holley makes an accessory drive kit that works.

[@mikemaness6804]

​@@briantooleyracing3554 what fuel was used during these test ?

[@mewrongwayKOCXF]

What about L83 heads on my LH6?? I would love to put a L83 into my 96 S10 but I dont know what motor mounts ect? 4L80E? ect.

[@BDauto86]

Wow really cool stuff and lots of good info packed into such a short video. Thanks for sharing BTR.

[@briantooleyracing3554]

Be sure to subscribe to our channel and check out our other videos!

[@dannycoots9503]

That's pretty cool I had no idea you had to do that

[@jordanhawarneh7388]

So you’d have to get a custom header to fit these gen 5 heads on something like a c6?

[@joeyjojojr.shabadoo915]

Brian, are you guys able to have a GenV OEM Block sleeved to 4.185" ? ... and is it possible to get an LT Camshaft custom ground to old school firing order ? I love LS and LT engines, but if I am going to chase building my dream N/A High Compression 87 Octane Daily Driver 454 LT, I don't want it to fart, crackle and pop all day long. I hate the sound of the new firing order. 1-8-4-3-6-5-7-2 for life ;)

[@atgn70]

Brian,do they make the carburetor/mechanical injection conversion intake for the L8T? Or Can we use the LT Carb intake?

[@oldschool6268]

I'm getting ready to turbo my LQ4, but I wonder the cost of putting gen 5 heads on LQ4 with gen 5 cam and exhaust could I get 550 hp rear wheel hp with good drive ability?

[@briantooleyracing3554]

You can't run a regular Gen V cam in a Gen IV engine, it's too long due to the fuel pump lobe.

[@oldschool6268]

Thank you for that.

[@briantooleyracing3554]

@Old school but you can run our custom LT Swap cam like is in the video and run the Gen V heads.

[@briantooleyracing3554]

@@oldschool6268 briantooleyracing.com/btr-lt-head-swap-230-camshaft-for-ls-engines.html

[@CLEEPER1]

We need them ls7 trinity intake with the straight facing throttle body's

[@mathieusynnott8915]

Nice! Does the 5th gen fits 4th gen piston? And What about the opposite? LS3 Heads, Intake in a L8T block with stock forged crank, and siamized bore?

[@briantooleyracing3554]

Gen IV pistons are generally flat, possibly with a valve notch, so there's no problem installing Gen V heads on Gen IV pistons. I would never install Gen IV heads on a Gen V shortblock, so clearance is irrelevant to me.

[@mathieusynnott8915]

Why not? Gen 4 aftermarket ported heads seems to have better results than LT1 gen 5. And for a guy that has a fully built turbo or supercharged gen 4 and blow up the bottom end, gen 5 can be a nice bolt on and keep stock exhaust etc...and have the benefits of a forged crank and bigger studs threaded block.

[@briantooleyracing3554]

@Mathieu Synnott it would be difficult to find hydraulic roller Gen IV heads that make as much power as the Gen V heads. Did you see the comparison of the TFS 255 LS3 heads compared to the LT1 heads in the video?

[@mathieusynnott8915]

No sorry i just find ls3 oem vs lt1

[@mathieusynnott8915]

ah yeah it need a reverse lobe gen v cam. True. But the rockers arms in LT are less stable and there are no shaft mount for them being crooked?

[@ghostlegion7]

What are people using for front accessory drive? Cause the heads are offset and holes wont line up anymore.

[@johnnyparker2410]

Need 4" bore pistons lt head valve reliefs cut to really make use of it

[@briantooleyracing3554]

We made a lot more power with stock LT1 heads compared to the stock LS3 heads and we didn't need to cut valve reliefs to do that.

[@johnnyparker2410]

@@briantooleyracing3554 what was your compression with the lt1 heads and the LS bottom end?

[@johnnyparker2410]

@Brian Tooley Racing I would love to do the swap over however I have 2cc domes currently and I'm worried about PTV due to reverse intake&exhaust valves.

[@robertbailey3057]

Also, if oem lt1 heads get that much of a bump, What about cnc lt1 heads, or even aftermarket lt1 heads?

[@briantooleyracing3554]

The 660 HP we made was with CNC ported LT1 heads. Back to back at the same compression CNC CID heads were worth another 13 HP more than the GMPP CNC LT1 heads.

[@SamCarGarage]

What did you do about a steam port line in an originally ls1 car? Any issues in not running one?

[@ironfistvail]

I am trying to buy a cam and head package for my 2015 corvette z51 I need help with the perfect package do you have a link

[@ARCHERTUNED]

Small bore ls7 or lt1 conversion? Which head is better for overall power? N/A

[@Go4BrokeOffroad]

I feel like a lt351w cam should be made as well.

[@robertbailey3057]

Do you guys have a program where you can machine....or purchase a pair of already machined gen v heads?

[@davidjaime6407]

BTR I want to do a custom cam grind for LS block with LT Heads but with the old school Small block firing order 1-8-4-3-6-5-7-2 yeah I might lose 20 HP but I want a late model engine but to sound like a old school cammed out Gen1.

[@jeremiaswitt1374]

This is solid gold 👏👏👏

[@jacobmann5559]

Nitros threw the original fuel injection port????? Just a thought direct injection nitros

[@japr614]

So, the question is i can pit ls heads on an l83?

[@TomJerry-ij2fx]

Waiting for this response aswell. I was told if you use LS heads on LT the piston make contact. I’m expecting some more elaboration because I would love to use my gen 4 headers on gen 5 block without the extra fabrication $$$$

[@LEGOCAMARO]

If sounds as mean my guy eyebrows sign me up. All jokes aside that’s a awesome product

[@BTB31]

do you have to run the bigger studs with these heads?

[@briantooleyracing3554]

No sir

[@Freedomishere-im6ug]

Lope swap mean it back to Ford pattern

[@stephenhodge6441]

Ok so besides milling the heads, were those stock LT1 heads? Also do LT4 heads flow even better than LT1 heads. I don't know much about the new LT platform they may have the same heads from all I know.

[@briantooleyracing3554]

LT1 heads have smaller combustion chambers than LT4, so they're better for naturally aspirated applications.

[@briantooleyracing3554]

We tested unsorted and ported LT1 heads, dyno graphs are on the website. briantooleyracing.com/btr-lt-head-swap-230-camshaft-for-ls-engines.html

[@stephenhodge6441]

​@@briantooleyracing3554 looking for lt1 heads currently and not knowing what I'm looking at. LS heads were easy with the casting numbers. Do the lt1 heads have something similar? If not are the heads that come on the 5.3 the same?

[@briantooleyracing3554]

@Stephen Hodge L83 heads are definitely not the same. However L86 heads are identical to LT1 heads, they both have the same hollow stem LT1 intake valves

[@stephenhodge6441]

@@briantooleyracing3554 ok one last question. I know the benefit to using the Lt heads is better flow that equals more power. But can the same results be had by using a good pair of aftermarket high flowing LS heads?

[@mauricemadrigal3819]

Lt1 the same as 5.3 /6.2 heads ?

[@rustler08]

If you can, turn down the gain on your mic. It's a bit harsh.

[@juanvillanueva5187]

Can you put LT heads on 6.0

[@dominicgonzalez5215]

Could we get a link to the truck intake manifold having a hard time finding it on the website

[@briantooleyracing3554]

It has not officially been released to the website:)

[@justinmccaffity6635]

When is the truck intake being released?

[@briantooleyracing3554]

It's ready to ship now, minus the EVAP adapter.

[@dominicgonzalez5215]

I’m not seeing the truck intake manifold anywhere on the website could you please supply a link

[@dominicgonzalez5215]

I’m not seeing the truck intake manifold anywhere on the website could you please supply a link

[@mikemaness6804]

Will the LT head fit a 4" bore ?

[@Macburton96]

Yup

[@davidciesielski8251]

Do you guys ever sleep?

[@briantooleyracing3554]

Haha!

[@keything8487]

AWESOME.... THANKS

[@enzo_vidmontiene]

So what’s the part number for the cam?

[@briantooleyracing3554]

briantooleyracing.com/btr-lt-head-swap-230-camshaft-for-ls-engines.html

[@briantooleyracing3554]

briantooleyracing.com/btr-lt-head-swap-230-camshaft-for-ls-engines.html

[@shanerorko8076]

Why on earth would you use a gen 5 head on a gen 4 block just to block the injector port off? This makes no sense at all, as gen 5 heads have smaller ports designed for air only flow.

[@scotthultin7769]

201👍's up thank you for sharing

[@drewmurray2583]

Keeping the price low is critical. Everyone is struggling with money these days. Making dreams possible!

[@pmd7771969]

Hey brian stop lying on your cam specs

[@paulz2641]

Br Ian the liar