opinions welcome on build.

PRH said
I always get a chuckle out of the rod ratio discussion.
A 4” crank with a 6.123” rod is nearly identical to every stock 454bbc ever made(4” with a 6.135” rod”).
One of the most popular rod/crank bbc combos is a 6.385” rod with a 4.25” crank.
1.50rr vs the SB Mopar with a 4” crank at 1.53rr.
Click to expand...


If the SBM had the port of a BBC I wouldn't care either. All Chrysler's are horribly induction limited.

BTW, if you read what I said, the OP can use a 6.250 Chevy Rod and an off the shelf piston with a 3.79 crank. The bonus was a bit of Rod ratio back. And a shorter pin height.