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gmc684x4 · 04-05-2021, 05:38 PM

I have two k20s both eaton a c20 and c30 d60 diffs
Stock 350 k20 trucks are usually 410 gears both mine have a lockers the other is a straight 6 4.57 gears

04-05-2021, 05:38 PM	#14
gmc684x4 Registered User Join Date: Jul 2012 Location: Whitehorse yukon Posts: 1,218	Re: 72 K2500 Rear Axle Identification. I have two k20s both eaton a c20 and c30 d60 diffs Stock 350 k20 trucks are usually 410 gears both mine have a lockers the other is a straight 6 4.57 gears