American Racing Headers
04-26-2008, 12:06 AM
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American Racing Headers I have a question, I got a 1998 Firebird Formula automatic stock with a GMMG chambered exhaust, I was thinking about buying some american racing headers, but wanted to know first what hp gains might I be lookin at?
04-26-2008, 12:28 AM
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There are a variety of gains in Long Tube headers. Here are my gains.
Stock, LS1s are generally rated 305 HP,
After my modifications....
QTP Long tube headers with HVMC,
TSP True Duals X Pipe
SLP Lid....
348 RWHP 365 Lb/torque...
I think generally you can expect close to the same if not maybe a bit less depending on your exhaust... just now saw it was an automatic. anyways... same answer
Stock, LS1s are generally rated 305 HP,
After my modifications....
QTP Long tube headers with HVMC,
TSP True Duals X Pipe
SLP Lid....
348 RWHP 365 Lb/torque...
I think generally you can expect close to the same if not maybe a bit less depending on your exhaust... just now saw it was an automatic. anyways... same answer
