400 horsepower

Bare with me this is my first post. I have a stock 350 that I want to build. We got it from a family member who has multiple sitting in his shed. But we want to run the comp magnum 292 cam in it. We are going to match it with 64cc 200cc Heads. On top of that we are going to run a performer rpm...

I do not know to much about cars but I do have a 81 chevy camaro with a rebuilt jasper 350 in it and that is all I know. How would I go about getting it to 400hp with about a thousand dollar budget.