with the SHP block .i am thinking 4.000 crank and 4.125 bore small block.but sbc has small oil pan rail so you end up with alot of windage with a std base oil pan with no kickouts the side kick out pan with a tray built in pan like milodon 31167 or 31524 realy helps. i still think you may have other things you must look at as i out lined before i would be sold on the windaged only deal