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With time off between the holidays I probably have too much time on my hands to dream up things to do to my Brick. Latest thoughts run to changing the final drive on the '92 245 from the current 3.31 (OEM with M47) to the 3.73 that the auto trans cars came with. But here's the kicker: the car not only has ABS (finer-toothed "tone" ring on the diff) BUT it's also a "No-Spin" limited slip unit. I really don't want to part with the limited slip, and of course if I replace the diff with a non-ABS unit the speedo will be off and the ABS system reverts to "fault" mode (this happened when the rear axle failed on the kid's '90 with ABS, and was replaced with a non-ABS unit). My reason for wanting steeper gearing is to take advantage of the VX cam... I'm quite willing to trade off higher revs at cruising speeds for some better acceleration. I won't spend a grand on it, but a few hundred is within reach.
I've done a fair amount of research but I still keep coming up with questions. The axle is fundamentally a Dana 30, but what's confusing is that *some* sources indicate that a complete different differential housing is required for the 3.73 or numerically higher gearsets. Other sources suggest that it's a 1-for-1 swap.
Has anyone here on the BB actually made this swap with a No-Spin diff, or has definitive information?
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Thank goodness we don't get all the government we pay for. -- Wiley Post
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