For 1990-2009 cars

(1) | GM Part Number
(2) | Differential Ratio
(3) | L.S.D Yes or L.S.D No
(4) | GM Broadcast Code

#### Available Axle Ratios

Axle Ratio | LSD | Drive/Engine | Flange PCD
--- | --- | --- | ---
2.92 | No | V6 5 speed auto & 6 speed manual | 96mm
2.92 | Yes | V6 5 speed auto & 6 speed manual | 96mm
3.27 | No | V6 4 speed auto | 96mm
3.27 | Yes | V6 4 speed auto | 96mm
3.45 | No | V8 6 speed manual | 110mm
3.45 | Yes | V8 6 speed manual | 110mm
3.70 | Yes | HSV only V8 6 speed manual | 110mm
3.27 | No | V8 4 speed auto | 110mm
3.27 | Yes | V8 4 speed auto & HSV V8 6 speed auto | 110mm
2.92 | No | V8 6 speed auto | 110mm
2.92 | Yes | V8 6 speed auto | 110mm