Quote:
Originally Posted by DAVID GAGNARD
I ended up with a box full of factory pulleys,both for the crank and water pump of varouis sizes, probably have a dozen to 20 pulleys....crank pulleys are for small block engine, not sure if the water pump pulleys would fit a 427, but if they do, your sure welcome to try a smaller pulley if I have one that will fit your motor......
I think you said your crank pulley was about 6"s in diameter, with a 5" diamter water pump pulley, you would be overdriving your water pump by roughly 15%, I think this should be a minimum.....
David
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David,
I think in my original post I said they were both 6.5". But on second glance today, as best as I can measure, my crank pulley is 6 3/4" and my water pump pulley is either 6 1/2" or 6 9/16ths, can't really get a good dead-on measurement and my large calipers walked off a few months back. Regardless, they are too close to the same diameter to achieve any overdriving. If you have a smaller OEM-style pulley, mine is exactly 2.5" in total depth, front edge to back edge. Shoot me a PM and we'll arrange to get it sent. There is no way this could do anything but help.