big block 906 heads, shaved 30 thousanths, rebuilt with valve job, new comp springs good up until 600 lift. No port work. Worked great on my 440, i went to edelbrock heads . I 've been saving these heads for almost a year, but im not going to do anything with them and im tight on money. Had them on for only about 2 oil changes. $400.00 takes em.
