As title really.

Are there any aside from 4.1 and 4.3? And if so, what are they?

Its all too easy to bog down due to my 4.5k+ powerband, and as I rarely do over 100mph lower gearing might be a plan for me, if something is available

Currently on the 4.1 rear end.

I know the non turbos you can get 4.875 and 5.12 for, but all ive seen for T2 ones is 4.3, and that wouldnt be enough difference to be worth it.

Any info appreciated.

 

Nothing available? I did some research and pulled up what seemed to be some obscure pickup truck diffs that youd never find, but was hoping someone knew of a tuner or similar with something worth buying.

 

Those are the only ratios available from Mazda. Otherwise, you will need to go with a custom gear set, a modified differential from another car, or an aftermarket differential.

 

Affirmative.

I'll be using an 04 differential out of a Cobra mated to DSS axles. Factory 3.55 gear. Just need my neighbor to sell it already . Nice thing about Ford rear ends is the infinite gear ratio choices.

 

Interesting.

Ive seen the complete rear end setups that Grannys sell, is that the kind of extent you need to go to to fit a Ford rear diff, or is there easier options?

Is there much weight difference?

 

afaik I know the turbo cars only had a 4.1 LSD rear. The GTUs had the 4.3 LSD but was a different case

 

A TII 4.33 ring and pinion set is available through Mazda Comp.

 

Its quite a bit of work.
http://www.v8rx7forum.com/v8-rx7-tec...ar-v2-0-a.html

 

i thought FEED or re-amemyia had a 4.77?

 

I had heard similar but could find zero info, hence the thread