Join Date: Sep 2008
Location: Fruitland Park,Florida
Welcome to the forum. Your 3.4 auto car is equipped with a 3.23 rear gear. A v6 with manual trans would have the 3.43 gear ratio. This ratio is the top choice on factory geared cars. Only a few v6 cars were equipped with posi & rear disc setup.
More likely to find 3.43 gears with posi on a 93-95 trans am or formula. If you want 3.73 or better gear ratio, you'll have to do a gear swap. 96-07 trans am & formula had traction control which makes swapping in a 96-97 rear end hard to do.
If your looking for a stronger rear end, you'll have to go aftermarket. These can run you $4000 or more.