Help spec'ing out a new small block

273 said
The radius of a 2.15" is 0.035" to 0.065" larger than 2.08"/2.02" meaning to keep about the same bore shrouding need a 0.70" to 0.130" larger bore if intake valve hasn't been moved over.

Grab that article for Pittsburghracer for the cid… 378 IIRC
A slight destrok of the 3.58 crank and a 4.1 bore… *I Think!*