What Combination of pistons and Camshaftfor good hp street 454 would be good with these heads? iM just begining to build my 454 need help please.

are these open chamber or closed chamber heads?

are these the round port later model style heads?

Tom

edit: what model and year are these heads? I couldn't find the number 6260482 on the mortec site for a BBC head.

they are replacement ls6 heads 118cc i think.

If they're 118 cc's a .270 tall dome would be about right.