can anyone tell me what the gear ratios are for the wc t-5s from 88-92 and if the same in all the wc t-5s from those years.

 

Go to the bottom of this:

https://www.thirdgen.org/newdesign/t...ulations.shtml

1988 5-sp Warner Gear
LB8 4.03 2.37 1.50 1.00 .76
LO3 2.95 1.94 1.34 1.00 .63
LB9 2.95 1.94 1.34 1.00 .73

1989-1992 Not available yet, but here are a couple that are belived to be correct.
T5 TPI Induction 2.75 1.94 1.34 1.00 .74

 

The 89-92 ratios are the same as those 88 ones, as well as the 88-back ones.

For the older cars, substitute LG4 and L69 for L03 and LB9; for later ones, sustitute LH0 for LB8.

As you can see, the 6-cylinder cars got the super-crappy wide ratios in the intermediate gears; and the V8 cars got better ones. Then among the V8s, the performance cars in any given year got a sensible overdrive, and the CAFE sacrifical lambs got the overly-aggressive highway mileage treatment.