[Marvin]

Not sure, the builder said you ues 428 crank 427 block for i think 454 cu.

He also said my block and rods were Cobra Jet and that the rods were better and the block has stronger webbing in the lower end?

I'm not sure about any of this since all i have had before are 302's Flatheads and 272, 312 y-blocks
marvin