HP gains over stock heads?

[hectore3]

Originally Posted by Viperlover

I've got a 355 in my 71 monte with shorty headers, comp thumpr cam (the small one), performer rpm intake and a holley street avenger 670.

What sort of power boost would I see with some good heads?

You are going to have to be more specific on your combination. Like: compression,cam specs etc. Gains are based on parts working as a system together.

You have a myriad of choices based on a Chevy small block heads that have the potential for power/torque. Think of a combination then we can work from there. ---Good Luck.