Originally Posted by 69 widetrack
I might be wrong but in a 12 bolt diff, I think you could get into the 5's and even 6's...The 10 bolt was the one that the 4.88 was the steepest...like I said I could be wrong but, something just jogged my memory.
Oh, and if you spill gear oil on your clothes and your married and you bring it home to your wife to wash...in most states that's grounds for divorce.
I believe you're right. What I was talking about was using a 5-or-steeper gear in a 3-series carrier. They make thicker gear sets (up to 4.88) to use in the 3-series housings, but I don't think there are any in the range that the OP thinks his ratio might be. I suppose a spacer
could still be used, though.