Anyone know the stock rear axle gears for a 2004 blazer 4.3l 4wd 4dr

 

There are many different options look up your RPO codes to find what gears you have.

 

Most likely you'll have a 3.42 (RPO GU6) or 3.73 (RPO GT4). Those were the most common axle ratios in the S-series trucks. If you don't have one of those RPO codes in your glove box list, then you can find RPO decoders all over the internet, or post the ones that start with 'G' and we can help.

 

Someone has ripped off that sticker in the glove box so i cant even access my paint code but i might call the dealership see what i got. Interested in your zr2 aluminium drive shaft swap was it direct fit?

 

Theres also vin decoders

 

Like Newguy said, either the dealership or an online VIN decoder can give you an options printout.

I don't have the driveshaft from a ZR2, just the rear axle. The ZR2 Blazer driveshaft would be too short for my 4 door.