Choosing turbo for L92
10-27-2015, 06:18 AM
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Choosing turbo for L92 Hey guys,
This summer i bought a 98 Camaro that had a L92 motor swap with a 4L80 and a 9" Moser, the car was setup with a 150 shot. I bought the car with the intentions of boosting it, and as the cold weather starts to creep in, the days are counting down till I start building the car for boost.
The motor is a stock bottom end, only mods done on the bottom end is a Moiling Oil pump and a cam. The heads are Wagner ported LS3 heads that I had completely gone through this summer after breaking a valve spring and bending a valve. I plan to keep the stroke stock, re-balance the crank, install good rods and pistons, but thats about it. Looking to make 900-1000rwhp.
My first couple issues to figure out is turbo spec, wastegate, and BOV.
Turbo: I think I want to run a S480, and Im open to input on this turbo. I really don't want a lazy turbo on this car as I do drive it allot. It seems like a T6 flange is a must, but A/R and turbine size are the things Im unsure of, so any input or real world experience is welcome.
Wastegate: I plan to run Tial gates, but I have seen many different builds where some use one large gate, and some use 2 smaller gates. What setup is better? I assume the twin gate setup is a bit better on boost control at lower boost?
BOV: kinda the same question as above, seen single and twin setups, not sure if there is a advantage or not.
Also what is the preferred hot side tubing diameter? Seems like 2.25 is common? I will be using v-banded truck manifolds.
Thanks for any input!!
Kyle
This summer i bought a 98 Camaro that had a L92 motor swap with a 4L80 and a 9" Moser, the car was setup with a 150 shot. I bought the car with the intentions of boosting it, and as the cold weather starts to creep in, the days are counting down till I start building the car for boost.
The motor is a stock bottom end, only mods done on the bottom end is a Moiling Oil pump and a cam. The heads are Wagner ported LS3 heads that I had completely gone through this summer after breaking a valve spring and bending a valve. I plan to keep the stroke stock, re-balance the crank, install good rods and pistons, but thats about it. Looking to make 900-1000rwhp.
My first couple issues to figure out is turbo spec, wastegate, and BOV.
Turbo: I think I want to run a S480, and Im open to input on this turbo. I really don't want a lazy turbo on this car as I do drive it allot. It seems like a T6 flange is a must, but A/R and turbine size are the things Im unsure of, so any input or real world experience is welcome.
Wastegate: I plan to run Tial gates, but I have seen many different builds where some use one large gate, and some use 2 smaller gates. What setup is better? I assume the twin gate setup is a bit better on boost control at lower boost?
BOV: kinda the same question as above, seen single and twin setups, not sure if there is a advantage or not.
Also what is the preferred hot side tubing diameter? Seems like 2.25 is common? I will be using v-banded truck manifolds.
Thanks for any input!!
Kyle
10-27-2015, 07:32 AM
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you can't go wrong with a S480 96/1.32 T6, 46mm gate, 2.5" hotside and a single 50mm bov. I put that same setup on a 370 and its all in by 3800/4K rpm. also on truck manifolds.