Originally Posted By 65Fury440
Is there a source for a smaller water pump pulley?

I have a 7" single groove water pump pulley and a 5.75" crank pulley.


You are turning the pump way too slow. That isn't even 1:1 unless the crank pulley is the smaller one.

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston