Right now this is the specification of my 1992 Miata LS:
* 1.6 engine
* 5 speed transmission with mechanical speedometer cable.
* 4.30 viscous LSD rear end
The drivetrain will be swapped to this in two months:
* 2.4 GM Ecotec
* Retain the same 5 speed transmission with mechanical speedometer cable.
* 3.90 Torsen rear end
Question:
Is there a transmission speedometer gear available for the 3.90 gearing?
I searched a few websites and could not find the answer.
My gut would say that one is not available as the newer cars have a speed sensor rather than a mechanical cable.
Maybe a 4.10 speedo gear might get me pretty close.