Moparts Tech Archive

Big Block

Hemi Pulleys

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.
My car has a mismatched set and I'm trying to make it right.

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.
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RUNCHARGER
Moparts Member
Posts: 1211
From: Abbotsford B.C.
Registered: Nov 2000
posted 05-19-2002 07:06 PM

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.
Sheldon
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WingCars
Moparts Member
Posts: 1140
From: Cherry Hill New Jersey USA
Registered: Aug 2001
posted 05-20-2002 07:27 PM

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
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Hemi67GTX
Moparts Member
Posts: 1516
From: Rockford MN USA
Registered: Sep 2000
posted 05-21-2002 11:34 PM

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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