I was running a 3.73 geared 12 bolt truck rearend that was out of a 71 Chevy PU and was using a Powertrax performance locker (replaces the spider gears) this is not the reg Powertrax unit but a forged steel street or strip unit ($400+ new) that I got in a trade...
Anyhow I also had a 70 model rearend with a positrac (factory unit) w/ 4.10 gears and took the posi unit out and switched ring gears so I could use the factory posi unit with my 3.73 gear and eliminate the Powertrax unit...
The problem now is I think I have 2 different versions of carriers...? Because the shims for the 4.10 gear are about 3/16th inch thick and the ones for the peg legged 3.73 unit were only about 1/16 inch thick...? If I center the posi unit with the 3.73 gear on it (to match my pinion gear) then it has way to much slack or backlash... I can use the various shims to get proper backlash but it moves the carrier to the right by almost 5/16ths of an inch...? Can it be ran this way...? Or...? Should I get a spacer and re-space the ring gear and center the carrier or say screw it all and just get a new ring and pinion to match my carrier and from all this mumbo jumbo which carrier do I have (the posi one...)
thanks....
Anyhow I also had a 70 model rearend with a positrac (factory unit) w/ 4.10 gears and took the posi unit out and switched ring gears so I could use the factory posi unit with my 3.73 gear and eliminate the Powertrax unit...
The problem now is I think I have 2 different versions of carriers...? Because the shims for the 4.10 gear are about 3/16th inch thick and the ones for the peg legged 3.73 unit were only about 1/16 inch thick...? If I center the posi unit with the 3.73 gear on it (to match my pinion gear) then it has way to much slack or backlash... I can use the various shims to get proper backlash but it moves the carrier to the right by almost 5/16ths of an inch...? Can it be ran this way...? Or...? Should I get a spacer and re-space the ring gear and center the carrier or say screw it all and just get a new ring and pinion to match my carrier and from all this mumbo jumbo which carrier do I have (the posi one...)
thanks....