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88Stanger · 12-26-2016, 12:58 PM

Toms67
i believe you will need to remove the carrier unit from the rearend {includes removing both axles} which houses the "posi" or "non-posi" in it. Along with this is the ring gear. then you remove the ring gear from the non-posi unit and install the ring gear into the new posi unit. At that time i believe you will need to remove the pinon gear also only because you will need to reset all the tolerances, ie. backlash and such. i may be incorrect, so if i am wrong please someone chime in here.
I did mine, i had 307 non-posi. i bought an Eaton disc style posi, all new bearings and shims, then i removed all the parts from the rearend, cleaned it up and then took it to a guy who does rearends locally and for $250 he put it all back together. I did go with 3:42 gears, little more low end but still some upper end also.

12-26-2016, 12:58 PM	#23
88Stanger Registered User Join Date: Mar 2015 Location: Washington State Posts: 1,644	Re: Posi rear end Toms67 i believe you will need to remove the carrier unit from the rearend {includes removing both axles} which houses the "posi" or "non-posi" in it. Along with this is the ring gear. then you remove the ring gear from the non-posi unit and install the ring gear into the new posi unit. At that time i believe you will need to remove the pinon gear also only because you will need to reset all the tolerances, ie. backlash and such. i may be incorrect, so if i am wrong please someone chime in here. I did mine, i had 307 non-posi. i bought an Eaton disc style posi, all new bearings and shims, then i removed all the parts from the rearend, cleaned it up and then took it to a guy who does rearends locally and for $250 he put it all back together. I did go with 3:42 gears, little more low end but still some upper end also.