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TX72Truck · 02-02-2012, 10:02 PM

Hey guys, I was thinking about putting 3.73 gears and posi trac into my 72 LWB C-10. It’s got 12 bolt and 700r. Instead of buying these new gears and a posi, I wanted to see if I can find a donor truck already with 12 bolt, gears and posi at salvage yards. They are $150 if you pull off, not bad, if can find. What GM makes and models and years should I be looking for? Will I run into any problems fitting? Has anyone ever done? Any help is greatly appreciated thanks.

02-02-2012, 10:02 PM	#1
TX72Truck Registered User Join Date: Nov 2011 Location: Fort Worth TX Posts: 7	?? 12 bolt rear with posi & 3.73 gears donor?? Hey guys, I was thinking about putting 3.73 gears and posi trac into my 72 LWB C-10. It’s got 12 bolt and 700r. Instead of buying these new gears and a posi, I wanted to see if I can find a donor truck already with 12 bolt, gears and posi at salvage yards. They are $150 if you pull off, not bad, if can find. What GM makes and models and years should I be looking for? Will I run into any problems fitting? Has anyone ever done? Any help is greatly appreciated thanks. Last edited by TX72Truck; 02-02-2012 at 10:22 PM.