automatic ring/pinion for TR7/8

Started by roverman, August 11, 2012, 12:22:03 PM

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roverman

I need lowest (numerical) oem. ratio available, in excellent condition, or new. Please pm. Thanks, roverman.

tr8todd

All TR8s came with a 3.08 ratio.  That includes automatics, standard 5 speeds, and the later FI cars.  TR7s came with 3.08, 3.45, or 3.90 depending on the model.  The Rover 3500 Vitesse came with a lower ratio, something like 2.83.  Have to double check that with the guys from the other side of the pond to make sure.

roverman

My lingering/agonizing question is, how much non-shockload hp can a 3.08 or 2.76,(Mike) take ? More tooth contact than 3.90, should be stronger, with less heat build-up. I hate to take out this rear, as it has a cooler and FF axles.  Onward, roverman.