New Big Block 4340 RB 4.15" Stroke Crankshaft, Chevy 2.200" Rod Journals Special Deal $699 Delivered

If you have someone that could turn down the mains to fit a 400 block i would be willing to pay the 700 plus the extra for machine work.

That would be totally cost prohibitive to do. If you want a crankshaft for a B block I am a Molnar dealer and can sell you one of their cranks. I'll send you a PM about it.

Tom