I know ive posted stuff about this before... but does anyone know what size gears the 94s came with? or if they varied, how to find out. i just bought a Hypertech Power Tuning Module and i need to know what size gears i have to tell it my gears are a different size. It is an automatic if that counts for anything. Thanks

 

yes they did vary

All Manual transmission cars from 85-96 have the D44 rear axle.
All 84s and all automatics have the D36 rear axle.

RPO Codes:
G92: Performance Rear Axle Ratio, means nothing really.
GU2: 2.73 verts option
15 pinion teeth, 41 ring teeth, 7.875" ring gear outside diameter
GM1: 2.59 standard rear for D36 cars
17 pinion teeth, 44 ring teeth, 7.875" ring gear outside diameter
G44: 3.07 standard rear for 4+3s, option on A4s
3.07:1 ratio: 14 pinion teeth, 43 ring teeth, 7.875" ring gear outside diameter
3.07:1 ratio: 14 pinion teeth, 43 ring teeth, 8.5" ring gear outside diameter (manual transmission)
GW4: 3.31 only for 84s with Z51 only
GT7: 3.33 available on Late-89-90 6speeds
GM3: 3.45 standard rear for later 6speeds
GHO: 3.54 available on early-89 6 speeds, and as an option on a few later years.

 

Check your line sheet for those codes and if the car is original, you can see what ratio you have. [8D]

 

Raisin, where did you find the line sheet break downs?

 

thanks mech but hwere do i find my line sheet?

 

If it is still there, it might be on the wall of your console. [8D]

 

ok so i found the code sheet... how do i know which code it is?

 

Read Raisin's post, option codes are usually a letter followed by 2 numbers. He has the option codes for gear ratio's. [8D]

 

you guys are so smart [8D] thanks for all of your help. now another question... if i went out and bought the Hypertech Programmer III, that would allow me to customize the gears i have in my car and everything working with a STOCK CHIP... i dont have the hypertech chip. I bought the hypertech power tuning module thinking it was the chip but apparently it isnt. So i just need to know if the stock chip is customizable as far as gear ratios and tire sizes and stuff like that go...

 

If I'm not mistaken, there is no chip in your car. It has a EPROM, which the power tuning module reflashes the stock tuning curve to a more high performance curve. [8D]