Help choosing primary size for turbo headers.
Thread Starter
Launching!
Joined: Jul 2013
Posts: 212
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From: Caldwell, Idaho
Help choosing primary size for turbo headers. Hi all first post and I've been doing as much research as possible for choosing the right size primaries for my single turbo C5. I was originally thinking 1-5/8 or 1-3/4 if 321 tubing for primaries and 2.25" - 2.5" crossover but not sure what gauge of pipe either. Here's my specs:
Borg Warner s400 ball bearing chassis with 88mm compressor/96mm turbine wheel and V3 compressor cover, 1.32 A/R built by Midwest turbo center. Turbo will not be supported by manifolds will have its own brace.
Lq9 bored to 390 c.i. forged internals built by AES
AFR 225 heads with 9.1:1 comp ratio
ECS big blower cam - 230/236 .572/.578 @ 114LSA (previous owner installed, probably switching to turbo cam)
Meth injection and pump gas
Ls6 intake
Stock 6spd t56 and diff.
Car will mainly be used for roll racing, half mile events and weekend warrior races.
I am planning on being able to make 1300whp if ever needed but mainly roll around 900-1000ish.
Any help would be appreciated.
Borg Warner s400 ball bearing chassis with 88mm compressor/96mm turbine wheel and V3 compressor cover, 1.32 A/R built by Midwest turbo center. Turbo will not be supported by manifolds will have its own brace.
Lq9 bored to 390 c.i. forged internals built by AES
AFR 225 heads with 9.1:1 comp ratio
ECS big blower cam - 230/236 .572/.578 @ 114LSA (previous owner installed, probably switching to turbo cam)
Meth injection and pump gas
Ls6 intake
Stock 6spd t56 and diff.
Car will mainly be used for roll racing, half mile events and weekend warrior races.
I am planning on being able to make 1300whp if ever needed but mainly roll around 900-1000ish.
Any help would be appreciated.
