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NoDOHC · 12-13-2010, 09:35 PM

Nice conservative porting, I like. I am guessing that you have figured out how far you can go out without losing a side seal.

What do you intend to do with the intake manifold? I think you will find your biggest power gains from modifying the manifold. I don't know if you intend to keep the stock ECU or not.

Do you have a dyno curve from the HBP?

EDIT; By the way, my bone stock 6-port in complete stock trim (146 Hp) would squack the tires going into second. The tire squacking is mostly due to engine inertia, not power.

The 4-port will light the tires up from standing on the gas (between 2,500 and 4,500 RPM in first gear) while traveling in a straight line on dry pavement. It is making about 200 WHp. I have 245/40/R17s on it. A 6-port will probably never do that because it can't make the torque (Ports close way too late). You will probably have more high end than I have though (less torque X higher RPM = same horsepower).

12-13-2010, 09:35 PM	#22
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	Nice conservative porting, I like. I am guessing that you have figured out how far you can go out without losing a side seal. What do you intend to do with the intake manifold? I think you will find your biggest power gains from modifying the manifold. I don't know if you intend to keep the stock ECU or not. Do you have a dyno curve from the HBP? EDIT; By the way, my bone stock 6-port in complete stock trim (146 Hp) would squack the tires going into second. The tire squacking is mostly due to engine inertia, not power. The 4-port will light the tires up from standing on the gas (between 2,500 and 4,500 RPM in first gear) while traveling in a straight line on dry pavement. It is making about 200 WHp. I have 245/40/R17s on it. A 6-port will probably never do that because it can't make the torque (Ports close way too late). You will probably have more high end than I have though (less torque X higher RPM = same horsepower). __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic) Last edited by NoDOHC; 12-13-2010 at 09:43 PM.