Yes and so will a tire and/or rim change. To correct the problem you will need to reprogram the ECU to compensate for the new rear-end.
yes there the same
i think the normal rear end already has two wheel drive because my '86 chev S10 has 2wd already built in unless Posi-tract is more different but i think there not much of a difference just tryin to save you money
it should bolt right up
Check the rear end. My Ford F-150 has the speedometer connection on the rear end housing.
Is the S10 a 4x4?If not, measure everything and if it is correct Go for it
54 Inches
when you get bigger tires, or different rear end gears.
The rears from any GM vehicle of any model year which has that same RPO code should be compatible.
Yes, they will affect your speedometer, unless you have it recalibrated (changing internal gears in mechanical models, or reprogramming for ECM controlled units). Same holds true for changing rear end ratios.
In the back end of the transmission.
There is no speedometer cable on a 1991 s10. Instead it has a vehicle speed Senor or vss for short. The vss is near the tail end of the transmission and has a green and violet set of wires that connect it to the drac module under your glove box then the draconian module is connected to the ecu which is then connected to the speedometer on the instrument cluster.
80W-90 gear oil