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Old 05-03-2015, 03:26 AM   #4
swamp rat
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Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: 72 350 Crank Pulley Diameter?

Very sorry for the delay...

The diameter is 6 3/4"
Non AC pulley numbers:
Inner Pulley against dampener: 3751232
Front pulley: 3751232

I included a close up of the two pulleys together to show the way they are indexed via 2 raised hole flange's, note the pulleys go together one way only, this pic they are 180 degrees out, turn the top pulley 180 and the holes all match.

I have a set for AC i sat next to the other set so you can see the difference.
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Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's
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