Water pump pulley interchangeability?

[WDoug72]

Hey guys,

Looking for a dual groove water pump pulley and was wondering if I could source one off a 302 or maybe an FE engine. Anyone know if these pulleys have the same dimensions?

 

[rbohm]

8) no they dont. the water pump on the 302 for instance is longer than the six, and i believe both are larger pulleys as well. they may physically bolt up as i believe ford used the same bolt pattern, but you will have belt alignment problems like you wont believe.