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Old 03-10-2014, 07:34 PM   #1
jpyle
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Join Date: Jan 2014
Location: Midvale, Idaho
Posts: 6
brake drums

I see they make two different heights of rear drums for 1978 c20 ? Can anyone tell me the reason and why? Thanks
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Old 03-10-2014, 11:08 PM   #2
bdiamond
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Join Date: Sep 2007
Location: Wichita Falls, Texas
Posts: 459
Re: brake drums

Different GVW ratings.... 2.25 and 3" I believe.... I think the ratings are something like 6200GVW light duty and 9000 or so for heavy duty
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