65beam
Donation Time
3:89
the original 3:70 gear sets are as quiet as a 3:89 as long as the ring gear bolts stay tight. i have original units in my series 4 and also in the wife's series 5. they are out of fastbacks that i had with the auto trans. the white fastback also has a 3:70 that i took out of a fastback that i parted a couple years ago.
the original 3:70 gear sets are as quiet as a 3:89 as long as the ring gear bolts stay tight. i have original units in my series 4 and also in the wife's series 5. they are out of fastbacks that i had with the auto trans. the white fastback also has a 3:70 that i took out of a fastback that i parted a couple years ago.