68 GMC c20 rear question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BurnerBrown · 08-18-2005, 03:10 PM

I believe my GMC has a Dana with 456 gears, not 100% sure of gearing, either way its starting to whine when loaded. I think its the outer wheel bearings.

I am not a big fan of the 62mph top speed, and wanted input about wether to fix the bearings and still have the gearing issue(can I swap in 373s?) or does it make sense to hunt down a new rear? If so, what year rear will fit, I can weld the perch's if need be.

It is a leaf spring rear.

THanks, Bill

08-18-2005, 03:10 PM	#1
BurnerBrown Registered User Join Date: Jan 2005 Location: Landsale PA Posts: 82	68 GMC c20 rear question I believe my GMC has a Dana with 456 gears, not 100% sure of gearing, either way its starting to whine when loaded. I think its the outer wheel bearings. I am not a big fan of the 62mph top speed, and wanted input about wether to fix the bearings and still have the gearing issue(can I swap in 373s?) or does it make sense to hunt down a new rear? If so, what year rear will fit, I can weld the perch's if need be. It is a leaf spring rear. THanks, Bill



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