Small Block with AC Water pump pulley size ?

[rustytoolss]

Can anyone tell me what the diameter is for the water pump pulley for a Small Block with factory AC ? Thanks

 

[SGBARRACUDA]

What year you talking about? Aluminum or cast iron water pump?

 

[rustytoolss]

What year you talking about? Aluminum or cast iron water pump?

just looking for general information. I have a cast iron pump, but information about Aluminum pump pulley could also be useful. Thanks

 

[diymirage]

Mine is roughly six inches (hard to measure with the fan on)

That is in a 71 duster, factory AC, but NOT factory small block, and aluminum water pump

FWIW

 

[SGBARRACUDA]

Before 70, AC set up was single pulley after 70 its a dual belt set up.

 

[Dana67Dart]

Check factory parts book, many times I have found dimensions.