Quote:
Originally Posted by Felix C
If you do not mind, what camshaft/intake/head combo on the 1969 Firebird to make hp at 6100-6300rpm? I presume you head long tube headers in place?
|
Hi RodneyR,
The cam was/is a CompCams P280-H (480/480 lift at .050). I had it at the engine builder due to wiping the original CompCams custom hyd-grind (which was over 520 lift on the intake). The heads were heavily ported #13's (by potentpontiac) which were re-done by the builder with Ferrea valves, a brass valve-seat and a cut (forgot how many angle's he put in the valves). Intake is a port-matched KRE Northwind (with a separate cross-over fabricated up). Right now, given the car has the stock inner fenders, I am using the Hedman 3-tube headers on it. Not sure those would be long tubes.
The engine builder ran it on the dyno with his headers (not sure what they were). Car made 420hp @6300 RPM and 458 ft-lbs of torque at about 4500 RPM.
I am sure if I went hyd-roller (and above 500 lift) the motor will really wake up. However, it is a great street car (enough rumble/grunt) to enjoy. Have not baselined it yet.
A quick video of my car running
Cheers,
Brian.