2006 at the Hammond Barn

[Phil Waterman]

Originally posted by Grant Bowker
.........does anyone know the difference in applications of 216 water pumps with one or two holes in the water pump backing plate?.......

I think that you will find that the 216 water pump with the two holes is generally post 1947+/- I have on 216 engine with the two holes and it is a 1953. I’ve looked in my 38-51 Canadian Chevy parts master catalog and it appears that the change is 1947. Don’t have my US master catalog handy so I can not cross check right now. Of course the parts change over don’t always happen at the same time between US GM and “Foreign” GM, I always wondered if it was delay in tooling change over or the “Foreign” GM engineers were just waiting to see if the changed designs really worked.