[mmiddle]

WideSide... are you sure on the 4 bolt 400's? I think I remember reading that all 400's where 2 bolts. never intended for performance like Hugger said.

Hugger... Great post. I always get a little fidgety with questions about cam/heads/stall stuff. I've pulled a lot of cams out because someone got starry-eyed and put a big-ol lumpy cam in.

Kawtoom. Think of your engine as an air pump. Heads and intake are critical along with the exhaust. Stock GM heads are crap without a bunch of work. The double humps are goods with work. The rare single humps only need to be cleaned up to be great. Most of the Aluminum heads are good as well with work.