I am building a 355 SBC.

I have 10:1 forged Speed Pro pistons.

200 cc heart shaped alum heads, w/202 160 valves, & 63 cc chamber.

1.6:1 roller rockers

Rhoads lifters to help with manifold vacc at idel & power brakes.
Should make the cam SMALLER at low rps also.

Forged Scat crank w/ stock stroke.

Edelbrock RPM amnifold.

Holley square bore 750 dual feed vacc secondary carb. (Wish I knw the model #).

It will have stock 1988 corvette exhaust manifolds (because of clearance issues) into a 2.5" Flowmaster 40 muffler for a Camaro (two one in two out).

My car is a 2500# Pontica Fiero GT w/ manual 5spd.

Running 17" wheels & 40 series rubber.

I want to get in the 450 hp range & have it come in around 2500 -3K range. I do not want a lot of low end torque as it will explode my transaxle.

This will be a weekend only car, no drags.

I am thinking of Comp cams X-Treme energy 12-250-3 (from PAW book) spec are 264/296 aadvertised deg, 240/246 @ .050, .507/.510 Lift w/ 100 deg lobe speration.

Will this combo seem okay??