[Mr427]

Misfit:

The major work with the 4.25 crank and BBC rods is, well, balancing and fitment issues mainly. The piston issue will probably be dtermined by the heads and chamber type you will use. Expect to pay in the 450-650 range for custom slugs. That is why I suggested the 3.98 crank, it opens up a list of 4.25" pistons that these days you can get from Arias and others for a decent fee. But, go with the flow, bigger is always better in this yard ...... until you pull up to the pump ..........