Johnny-LT1-runner

iTrader: (15)

Ok, so I would know this, except that I had my passenger door replaced due to bad drivers. So I don't have the sticker that tells me what I have.

I've heard that if you have first gear marked on the console you have 3.23's.
If not, you have 2.73's. I'm not sure if this is true or not.
My console does not show first, however I am able to forcibly shift and hold it into first.

This is on a 1994 4L60E LT1.

I'm going to get either 3.73's or possibly 3.90's.

Any Ideas?

slow

iTrader: (7)

look on the option code sticker (drivers door, or glovebox , GU2 2.73 GU5 3.23

Ryan

01ssreda4

iTrader: (96)

either way, we are revolving the rear tires and counting spins to be on the safe side

Johnny-LT1-runner

iTrader: (15)

Ryan, Did you read the whole post? the sticker that had the info is no longer on the car. I've checked the driver's and GB, nothing there.

Steve, even if i find out, we're still doin that to be on the definate safe side.

SteveC

Easy way to tell is to look at your drive shaft, is it rusted?, if so, it is a steel driveshaft and you have 2.73:1 rearend gears. If the driveshaft is not rusted, you have an aluminum driveshaft which came with all the 3.23:1 rearend gears.

SteveC

2001NBMZ28

Can't always tell by the RPO code, mine came with 2.73's and changed to 3.42's. Something easy to try is a calculator like www.f-body.org/gears/ Driveshaft could've easily been swapped over the years too.

LS1Formulation

iTrader: (13)

Jack up the rear of the car, make a mark on the DS and turn the tire one revolution. Count the revolutions the DS makes. That will give you a rough estimate of your gear ratio.

TransAm Bandit

99% u have 3.23
and replace it with 3.73 and enjoy ur car