[Bigdawg70]

Has any one successfully built a twin turbo ls. In our cars and been able to retain the a/c? I know they have been many ls swaps and 1 or 2 turbo setups. But I have a idea floating around to make a tt setup and have seen s parts that could poss work. I tried searching but haven't found any cars or info. I know my current setup will only take me so far and im thinking of switching while im not so deep into it

 

[krwyellowz28]

The Crapice is the only TT LS b-body to-date that I am aware of. I'll be tearing into my '96 SS in the next couple months to start my TT LS project and I plan to retain 100% of the stock AC system, minus brackets to fit the stock compressor to the LS FEAD.

Here's the Crapice. My setup layout will be a lot different from his, but its always good to see more examples and get ideas:
http://ls1tech.com/forums/forced-induction/1731564-project-budget-crapice.html

 

[Bigdawg70]

Thanks man I seen that one yesterday morning. Interesting set up ill be sure to watch it. What manifolds were you thinking about using? Custom or off shelf? I found a set up I think I could make work should be interesting if I can make this a reality.

 

[krwyellowz28]

For the first itteration I plan to use modified stock manifolds since they're so easy to weld. I have a couple sets of non-EGR truck manifolds that look like they're work ok down/forward and then turn them up so the turbos are sitting at the front corners of the engine. They'll be in basically the same location as the Crapice, only turned so the DP is aimed straight back. The idea is to have the least amount of hot plumbing visible in the engine bay.

I also just picked up a set of Camaro LS3 manifolds that are looking pretty promising. They are almost symetrical, and turn down right after the log. I'll fit them on a spare 4.8 tonight, but I'm hoping I can run them down/forward and 180* the pipe back up to the top. The biggest problem I can forsee is interference with the AC and/or the water pump fittings... but the water pump can be modified easy enough.

What manifolds are you thinking of using?

 

[krwyellowz28]

Ha! I just found some decent pics of the LS3 manifolds down/forward. Unfortunately now I'm less confident than before. It looks like the driver side will point directly at the steering box, and the passenger side don't have clearance for the AC comp:

Driver side:

Passenger side:

If stock manifolds don't work out, I'll build a log like everyone else does. This is one that Parish built a long time ago for his blue Silvy:

 

[Bigdawg70]

I found a off the shelf on thats looks like I could make work. There more of a high mount design they appear to clear all the accessories. Ac look like it could work with the right pump and custom hoses. It was designed for a ls swap and I been comparing pics with ls swap in our cars. Since I trying to limit my out sourcing these seem like a good Idea I'm not looking for 1000hp just a fun cruiser with a little wow factor. I know my current turbo setup is limited. So this should keep me happy for awhile.

 

[krwyellowz28]

That looks like a pretty slick setup that should fit our cars pretty well. What brand are those? I'm not familiar with them.

 

[Bigdawg70]

They are those cxracing brands I been reading up and seems like there products are getting better. There designed for a supra ls swap and even claim to have been fitted in a gto. I figured since it's a one off setup I would have to do sum relocating of sum other things but it would also clean up engine bay. It look like even the down pipe design could work also. Drivers side might require oval piping by steering shaft but that's no biggie. They sell a whole kit with turbos manifold and wastegates for cheaper than what I was quoted just to do a manifold. I know there turbos aren't the best but for startup and getting a base idea of what I'm doing. I think it could easily push 650-700hp considering most ls will give u a base around 400hp. When you check it out ans see price you will probably buy. Im just holding off until I can figure out when to bring my car to me.

 

[krwyellowz28]

CXRacing GT35's

 

[Bigdawg70]

Oh your such a tease lol

 

[krwyellowz28]

I was messing around last night in the shop. If hood clearance and symetry weren't design constraints, building a TT hot side would be as simple as cutting off the stock manifold flanges and welding the T4 flanges in place.