The Stovebolt Site Forums The Shop Area Engine Shop waterpumps on 235 engines

I'm trying to find out some information on the early and later type water pumps used on 235 engines. I have a 1957 235 engine that has the water pump mounted in a hole in the front of the engine block. The engine is going in a 1953 AD 1/2 ton truck.
Originally when I rebuilt the engine, I shortened the shaft on the water pump and pressed on a pulley from a 216 external water pump. I see where they say this is a no-no. It turns the water pump to fast this way.
Question, what was the original size pulley used on the 1957 engine? I wondering why I couldn't machine the 216 hub and remove the pulley and add a larger diameter pulley to it.

thanks John

It is common to use a 292 Ford pulley for the setup you are using.

My fan was turning too fast, had to slow it down. I simply put a 6 3/4" pulley over top of the 4" pulley. I got a slightly longer fan belt and I am as happy as can be with it.

If you look carefully, you can see both pulleys.
http://i365.photobucket.com/albums/oo91/1953panel/DSCN02251_zps529d5ab8.jpg?t=1366584373

Is your motor in an AD? Even with the shortened pump I had wondered about clearance between the fan and radiator. I had considered using a front mounted electric fan on it, but by your picture it looks like the fan will clear.

John

I have 1/8" between the fan and the balancer. Between the fan and rad is no more than 1/2". Perfect fit in my opinion, yes it's in my '53 panel. Engine is a '60 261.