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roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

automatic ring/pinion for TR7/8
Posted by: roverman
Date: August 11, 2012 12:22PM

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


tr8todd
Todd Kishbach

(390 posts)

Registered:
12/04/2009 07:42AM

Main British Car:
Re: automatic ring/pinion for TR7/8
Posted by: tr8todd
Date: August 11, 2012 09:03PM

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
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: automatic ring/pinion for TR7/8
Posted by: roverman
Date: August 12, 2012 04:53PM

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.
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