Here is how the engine was tuned for the 400 plus horsepower.

Engine was bored 30 over.
The heads were ported and polished
525 camshaft
Holley 650 Spread Bore Carburetor
Stock Exhaust Manifold
Edlebrock Performance Manifold (matched to the engine)
Mallory Performance Electronic Ignition
Dual 2 1/2" Xlerator Performance Mufflers
Stainless Steel Exhaust Tips

The transmission and rear-end are the next to be worked on. I will be posting specs on the tranny soon.