C2 waterpump pulley

[David maxwell]

I was wondering about the #'s on a waterpump pulley. I believe the original # is 3864480, is this correct? Someone also told me that it is 3906656. Which is the correct one? Thanks......

[Joe L.]

Re: C2 waterpump pulley

David-----

For a question like this, the application would be helpful. There were quite a few C2 waterpump pulley applications. However, Im going to assume that you're talking about a 1965-67 big block application without C-60. If so, the original waterpump pulley for 1965-66 applications was GM #3864480. For 1967, the part changed to GM #3906656. That part also became the SERVICE pulley for 1965-66 applications.