Whats the approx size of a small block water pump pulley?Or should I use the biggest 1 I can fit on there ?
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Whats the approx size of a small block water pump pulley?Or should I use the biggest 1 I can fit on there ?
Just get the one that fits your water pump (long or short).
Denny,
You're right. It's about 7" Just measured mine.
As a side note, there is a dual groove water pump pulley that has 2 different diameters. It must be used with a crank pulley that also has 2 different diameters. The larger pulley groove is for the alternator to overdrive it to maintain output at lower RPM.
Pat
THnx all!! I just went and measured 7 inches.I just thought it was a little close to the crank pulley ,theres only about the width of a nickle between em.
The pulleys are pretty close. There's about 5/16" between the pulleys on my motor.