Originally posted by 1986GT V8 Fiero
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??
This combo. will have very poor throttle response.The heads will pull to 8,000 r.p.m.s. and the cam is done at 6,500.I would look into heads that have a max. port volume of 180 cc.