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**'68OrangeSunshine** · 08-22-2010, 08:03 PM

I got a catalog from Coleman's Millitary Surplus the other day.[www.colemans.com] They list a couple of US GI Front Axle and Rear Axles for '81-'87 Chevy & GMC. These are new-in-the-crate assemblies, complete with brake drums or discs for $300 for front and $400 for rear. Rear ends are posi. What the catch -22 must be is the shipping charge, especially from PA to AZ. Other drawback is they are 3.08 ratios. They list a spring pad center to spring pad center distance of 43". Backing plate to backing plate is 56".

My question is how much hassle will I encounter to get their military rearend to work on my '71 GMC Jimmy 4x4? Currently I have a 12-bolt Corp + Eaton posi in 3.73 and it's broken. Obviously shipping will be huge, and I'll need the ring gears + pinion changed out to 3.73. What else?

08-22-2010, 08:03 PM	#1
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,077	War Surplus Axles I got a catalog from Coleman's Millitary Surplus the other day.[www.colemans.com] They list a couple of US GI Front Axle and Rear Axles for '81-'87 Chevy & GMC. These are new-in-the-crate assemblies, complete with brake drums or discs for $300 for front and $400 for rear. Rear ends are posi. What the catch -22 must be is the shipping charge, especially from PA to AZ. Other drawback is they are 3.08 ratios. They list a spring pad center to spring pad center distance of 43". Backing plate to backing plate is 56". My question is how much hassle will I encounter to get their military rearend to work on my '71 GMC Jimmy 4x4? Currently I have a 12-bolt Corp + Eaton posi in 3.73 and it's broken. Obviously shipping will be huge, and I'll need the ring gears + pinion changed out to 3.73. What else? __________________ Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 08-22-2010 at 08:05 PM.