Moparts Tech Archive
Hemi PulleysJohn Kunkel
From: Rio Linda, CA, USA
Registered: Nov 1999
posted 05-18-2002 05:51 PM
Could some of you with stock Street Hemis measure your crank and water pump pulley diameters and post them here with the years they came form.
So far, one response with a lower single pulley that measures 5 7/8" in diameter by 1 5/8" deep. Thought to be a '66-'67.
John: 71 Hemi Charger, bottom pulley, inner (alt-fan) is 6 1/2 inch, outer (PS) is 5 1/2 inch, cannot get depth as car is assembled, top pulley is 5.45 inch diameter, 2.1 inch from front surface to back surface.
For a 426 Hemi I was able to use the bottom pulley from a poly 318.Was told this by local NJ mopar legend Joe Gerdelman
The crank pully (single groove) is 5-3/4 dia x 1-3/16" total depth. The WP pully is 6-7/8" Dia x 2-7/8" deep. The wp pully is the same as a big block, the crank pully is different on the hemi due the thicker damper. Hope this helps.
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