71- Newer 2wd trucks use a 5 on 5 lug pattern Yes the axles were special in that I wanted to use a 28 spline center section already had rather than buy a new 3rd member to suit the 31 spline axles that Speedway stocked. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's 3:08, 3:40, 3:73 70-81 4wd 6 lug reared 71- Newer 2wd trucks use a 5 on 5 lug pattern 71-76 Full Size Cars " "" "" ". endstream endobj 29 0 obj<>stream Estimated Lead Time: 5-Days. These dimensions do not include brake drums and are measured from backing plate to backing plate. I cut two axle flanges from a couple of short pieces of wood and then used 3/8 lag bolts to attach them to the longer center portion of the rear axle. jack39rdstr # 169783 04/02/10 02:03 PM. i've seen that link about a hundred times now and it's kind of funny how the 73-77 GM A-body is not included. The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. http://www.jalopyjournal.com/forum/showthread.php?t=128884, http://www.jalopyjournal.com/forum/showthread.php?t=38805, Upstate New York, watching my New Yorker Rust, http://www.jalopyjournal.com/forum/showthread.php?t=128884&page=2, http://www.jalopyjournal.com/forum/showthread.php?p=1450810#post1450810, (You must log in or sign up to reply here. plate to backing plate. So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. a Custom Classic Truck" Peterson Publication; June or July 1999,