gears
 

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

RE: gears
 

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.

RE: gears
 

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

RE: gears
 

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

RE: gears
 

thanks mech but hwere do i find my line sheet?

RE: gears
 

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

RE: gears
 

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

RE: gears
 

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

RE: gears
 

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...

RE: gears
 

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]