What pontiac heads to be ran on a 1970 400ci block now I have #17 castings , was being lead to #670 castings .That is my question for when I take the motor out of the x body ventura to look towards 11's at dragstrip 1/4 mile . I was told to come to this site from Yellowbullet most of them are motivated for edelbrock or kauffman aluminum heads - I am looking to save some coin to put other places too .
http://www.yellowbullet.com/forum/sh...d.php?t=520441 Thank you for info to get me here .