What is the diameter and depth of a stock 427 crank pulley?
I have a serpentine pulley that is 6 7/8dia x 3 1/4 deep. I thought it was smaller dia than the crank pulley that was on it. If the V-belt pulley was 171mm (6 3/4) dia, it's basically the same OD but the serpentine pulley is 1 1/2 longer.
It looks like I will be notching the crossmember.