im looking to get 373's for my trans am and dont know what serious rear end i am. how do i figure that out? and can somone give me a link where a good place to order these gears?

 

http://store.summitracing.com/partde...5&autoview=sku

would this fit? and does that come with new bearings and everything i need for install? what else would you recomend?

 

Series, you mean?

You might want to have a look at the FAQ at the top of this forum, it will help.

If your car came with 2.73s, it is a 2 series car. If your car came with 3.23s or higher, it is a 3 series car. You MUST get the right series of gear for your car to be able to install it.

The link you posted looks like it includes everything you need. You will need to find out your series before ordering, though. You want a ring, pinion, pinion bearings, carrier bearings, new ring gear bolts, shims, gear oil, and a new crush sleeve. You can either use the gasket for the cover or RTV.

 

Look on your door jam for your codes. GU2 or GU5 is the code your looking for. A GU2 code means you have 2.73s and a GU5 is 3.23s. If you have 2.73 you will have to buy a 2 series gear, 3.23's a 3 series.