Dave, the only reason I'm using the GMC crossmember is because it's a GMC truck body and the radiator supports are different from the Chevy so I need to use that cross member from the GMC so all the body parts line up.. How can I find out which water pump has the shortest shaft?


1952 GMC
Starting with a basket case
In the Project Journals
1967 GTO
1967 Firebird