Quote Originally Posted by chevydrivin
Should I pick this big block out of the scrap iron pile?
Its a 3963512, book says 70 -76 454 or 69-427. Would that be short ot tall deck?
Not familar with BB numbers is there a # on the front pad like SB's?

Thanks
I think that is more likely a 454, 70-76 block.
It is a good early casting number.