Originally Posted by thunder57
Thanks for the input. I'm really hoping for something closer to 500 rwhp......
Understand Jake, that my engine is a 376ci where-as yours will be a 403ci.
Also, mine is stockish compression......slightly over 10.7:1 due to a thinner head gasket, where-as you'll be bumping up to a slightly higher compression ratio.
Finally, my car has a 4L60E tranny while yours is a manual.
All things considered, I would not be surprised if you were in the 490 to 510 HP range and right around 450 to 460 LB/FT TQ.......to the wheels.
The only thing that would hold you back to any degree would be the unported heads......and they may not be that much of a handicap.
BTW.....if you wouldn't mind giving up some torque for additional HP, you could always have the cam ground on a 113* + 2* LSA instead of +4*. I wouldn't do it.....but it is an option.