Which gears?
 

I was wondering if there was an easy way to see what gears I have? I know it's either the 2.78 or 3.23 since I have an A4? I did do a search on this and found some info on looking for gu2 on the drivers door but that must be a z28 trick only because there is no GU anything on my formulas door.

Anyone know how too check the gears on a A4 pontiac? I want to get a vig3200 TC and if I have 3.23 then I'll probably stay with those but if I have 2.78 I'll consider upgrading.

check your drivers door for the RPO Codes

GU2 Axle, Rear 2.73 Ratio
GU3 auto tranny,
GU4 Axle, Rear 3.08 Ratio
GU5 Axle, Rear 3.23 Ratio
GU6 Axle, Rear 3.42 Ratio
G80 Axle, Rear Posi-traction (Limited Slip)

is the LS1 equipped cars distinguishable by whether or not you can select 1st gear?

i know in the LT1 cars, if you can't select 1st you have the 2.73 gears.
if you CAN select 1st you have the performance 3.23 option...

not sure how that relates to the LS1's though...

you could always jack it up and count the axle/tire rotation

I have two stickers at the end of my drivers side door that contain the following numbers/info


date gvwr gawr frt gawr rr

04/99 1924kg 976kg 948kg
4240lb 2151lb 2089lb


vin# 2g2fv22g5x2228235 type pass car






second sticker below that one is tire info:


tire-loading info

occupants vehicle cap weight

frt crt rr total kg lbs

2 0 2 4 318 701


model fs87 faf

tire size spd rating cold tire preasure

frt p245/50zr16 z 210 kpa (30 psi)

rr p245/50zr16 z 210 kpa (30 psi)

spa 135/60r16 m 420kpa (60 psi)


Thats all there is. no label in glove box either. Anything up there that will give me a clue as to what gears I have? any help would be greatly appreciated.

And there you have it well said :D

There is no rpo code on my door. It just does not exist on my car so is there another way to check?

3.23's have the alum driveshaft, 2.73's the steel. You can also go to www.f-body.org/gears/ and check your RPM/MPH.

I have an LT1 ...but my codes are in the glovebox on a sticker...might wanna check there and not your door?

I checked the glove box and there was nothing there either :(

Thanks for the replies. I'll just assume I have 2.78 since 3.23 was an option for these cars.

It will definitely be on your driver's door unless the previous owner ripped it off.

The sticker at the very top of the inside of your door and says: SERVICE PARTS IDENTIFICATION DO NOT REMOVE

It should have quite a few codes on there. Seeing how you have an A4, look for GU2 or GU5.

GU2 - 2.73
GU5 - 3.23

Last resort, jack your car up or put it on ramps so you can get under it. Look at the driveshaft and flick it with your finger, if it makes a tink and it's silver, you've got 3.23 gears, if it's black and feel like it's steel, you've got 2.73 gears.