all sounds like good advice, will look into it,thanks. well took the first step and ordered that jim hands pontiac book
and also as im here and got your attention. what do standard pistons in a 400 1970 look like, i only ask as mine look very new, clearly havent been in there long, i know the guy before me did a basic rebuild but as this is my first 400 i dont know what the pistons as standard look like.
mine have 4 valve relifes in them and have STD stamped on all of them, are these standar or aftermarket?