567trishop
Active Member
Hi I am started to orded parts to build a 434, with a gm671 with 10 psi. eagle crank, edlebrock heads, comp cam etc, I'm just wandering wheather to change the 2 bolt mains or if the stock mains are ok. Do I use gm bbc 6.135 3/8 BOLTS or eagle BBC 6.135 H beam with 7/16 bolts.