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pope · 10-31-2011, 07:03 PM

The only thing to really worry about is keeping the ratios close. Within 1% for highway use and up to 2% if you are really only going to be off road with it in 4wd. I am pretty sure that Both the blue oval and GMC ran the Dana (spicer in the day) as rear axles while Chevy ran the Eaton and Corperate rear. The dana 44 was pretty well used by everyone as a front diff, with the blue oval running a driver side pumpkin while GM and Dodge ran pass side pumpkins. The nice thing about running a Dana axle is you can easily match the ratios and there are so many options for gear sets. The Eaton rears on the other hand were limited to 4.10 as a high for production gears with an aftermarket 3.90 that has been out of production for some time.

10-31-2011, 07:03 PM	#91
pope Registered User Join Date: Dec 2010 Location: Belgrade, Mt Posts: 130	Re: '60 GMC 4x4 Long Fenderside The only thing to really worry about is keeping the ratios close. Within 1% for highway use and up to 2% if you are really only going to be off road with it in 4wd. I am pretty sure that Both the blue oval and GMC ran the Dana (spicer in the day) as rear axles while Chevy ran the Eaton and Corperate rear. The dana 44 was pretty well used by everyone as a front diff, with the blue oval running a driver side pumpkin while GM and Dodge ran pass side pumpkins. The nice thing about running a Dana axle is you can easily match the ratios and there are so many options for gear sets. The Eaton rears on the other hand were limited to 4.10 as a high for production gears with an aftermarket 3.90 that has been out of production for some time.