ok im ordering guideplates for my cc503 swap and the guy i talked to at comp cams couldnt find out the diameter of my pushrods so that is the only thing that im lacking to do the swap... so what is it?? 94 z28 and are 94's hardened?

 

You need the GMPP guideplate for an LT1. Thunderracing has them

 

94's came stock with hardened pushrods.