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factorystock · 01-03-2009, 05:59 PM

GMC used spicer axles, not chevy built axles, for their 1/2 tons thru out the 60's. The standard axle was the spicer 44 with the optional spicer 60-2. Looks like your is a 44 model with 3.54 ratio.

01-03-2009, 05:59 PM	#2
factorystock Registered User Join Date: Feb 2007 Location: west coast Posts: 3,399	Re: need help with these rear gear numbers GMC used spicer axles, not chevy built axles, for their 1/2 tons thru out the 60's. The standard axle was the spicer 44 with the optional spicer 60-2. Looks like your is a 44 model with 3.54 ratio.