What is the power steering pulley part number with holes in it so that you can access the mounting bolts with the pulley pressed in place?

 

Good question,I want one to

 

I just pulled the pulley off and marked where the holes are and drilled my own. Worked for me?

 

There are at least two that will fit, 12578552 (4 holes and 6 3/16" dia.) and 12568997 (4 spokes and 6 11/16" dia.).

The latter is the 2nd design C5 pulley that comes on the crate LS7. It will slow the pump down a bit (like an underdrive pulley).

 

i know that the powersteering pulley for a 98 camaro v6 works and has 3 holes in it