what to expect.
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Joined: Oct 2006
Posts: 106
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From: Libertyville, IL
Car: 1991 z28
Engine: L98
Transmission: 700r4
what to expect.
well I just dropped off my throttle body, plenum, runners, base, and heads. getting porting and gasket matching to the intake stuff and port matching the intake ports on the heads to the manifold. Also getting the exhaust ports on teh heads polished to help get the exhaust gas out faster, and getting 2 inch valves and 1.6rr. combined with a set of headmen long tubes what do you guys think I should expect as far as performance gains and drivabilityl issues? do you think I will NEED a re-tune or is this set up within the capabilities of my stock computer. BTW I have a 1991 l98 speed density. Thanx guys.
Last edited by ajk511; Aug 20, 2007 at 10:48 AM.
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Joined: Sep 2003
Posts: 6,859
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: what to expect.
Very hard to say how much power you will gain. It will be totally dependent on how much the alignments were off to begin with. You will pick up some just hard to say.
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