6.6 Gas L8T Engine Swap in 2015 Suburban

[L8T BURB]

Im not sure you will be able to use the exhaust from the 5.3. The diameter of the piping might be to small. Might be time for a custom exhaust if the 6.6 exhaust wont work.

I am prepared for that as an option too. I will definitely update the group as things continue to progress!

 

[TollKeeper]

Looking at the TQ curve of that engine... Thats just bonkers. at 1000rpm, your already at 350 tq, and it maxes out at 4100 RPM with 464 TQ.. Man... Thats going to be a fun engine..

 

[L8T BURB]

I just had an idea...call me crazy, IDK.

Wonder if I was to contact Whipple once this thing is running and see if they'd be willing to do a supercharger build with my Suburban? Like for advertisement, and with it being such a unique, possibly 1-of-1 build. Maybe they'd cover parts and I cover labor? Maybe I'm just being unrealistic? Heck, idk lol.

 

[TollKeeper]

2 things just came to mind... What is your rear gearing, and what rear diff do you have?

I am just wondering if the rear diff is going to be able to handle this TQ/HP.

As for whipple... They have already tagged up with a couple builders. Theres a Nova running around, a couple with the LS7 supercharger running around..

This engine was drooled over, and dreamt about before it even came to market.

I wonder if this is going to be GM's last hoorah before the EV nightmare starts.





Then theres this crazy a$$ L8T

Horsepower On Tap: The LME Supercharged L8T Is Ready To Order

In a world of mail-order parts, horsepower is easy to obtain. LME makes it easier with its complete supercharged L8T engine package.

www.lsxmag.com

 

[L8T BURB]

I hadn't gave the rear axle much thought. My thinking was that this power train is SOMEWHAT similar in power to the 6.2, so I was hopeful I could maintain my stock rear.

After some research online, I think I may have 3.08 gearing, and it appears the 6.2 Suburbans have 3.23. So I may not be TOO far off.

 

[TollKeeper]

This 69 Camaro L8T is SiCk!

Project 899 L8T Stacks On Muscle With Whipple 3.0L Blower

To make 899 wheel-horsepower we knew we wanted boost. The Gen-5 3.0L Whipple supercharger is exactly what the L8T in Project 899 needs.

www.enginelabs.com

 

[Bigkevschopshop]

So what all on the front of the motor had to be swapped, I see a nice pile of parts on the bench there.

My first guess is AC compressor, water pump housing etc.

 

[B-train]

Plenty of space for a single turbo pushing 6-7 lbs of boost! Not enough to blow it up, but enough to put a smile on your face!

Man has only been part of this community for 32 posts, and I think is making one of the most interesting threads to date!

Totally agreed with the interesting thread!!! Love it so far

 

[adventurenali92]

I read through the first couple pages before the OP purchased the engine and thought he was kinda crazy for this swap but holy cow! That’s super cool that it looks like it’s working! I’m in to see the results.

 

[olegthered]

Amazing thread. Looking forward to see the result.