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Old 02-21-2026, 04:19 PM   #2
mr48chev
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Join Date: Jul 2007
Location: Toppenish, WA
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Re: 51 Chevy 3600 Differential/Center Section Options

Here is the exact info you are looking for, Finding a 68/72 coil spring C20 with 350 and automatic in a wrecking yard with a good third member might be a bit of a challenge. In truth the hard part will be finding a good donor.

https://www.stovebolt.com/techtips/a...Ton%20Upgrade/

This is good info that I am saving to my favorites as I see people ask the same question all the time. I'd be looking more at 69/72 potential donors though. GMC is leaf spring and often as not has a Dana 60 as my 71 GMC does.
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