Thanks for the links. I've noticed quite a few of your post while reading different threads on engine builds. You seem quite knowledgeable about engines, mind if I pick your brain for some info. What do you think of the parts that I have purchase to build my 383? bear in mind I am doing this on a budget. The engine is going into a 77 Chevy short box 4 linked on 46" tires. It will be mated to a 4 speed, and running 5:13 gears. The Engine will be running 1 5/8" long tube headers and 3" exhaust. What do you think this engine is capable of making in torque and horsepower? My goal was 500 for both.