2010 Ford Mustang Axle Information & Ratios
| Year | Engine | 7.5 Rear | 8.8 Rear | Axle splines |
Type axle |
|
| 1979-1985 | ALL | Yes | 7.5″ | |||
| 1986 – 2010 | V8’s | Yes | 8.8 | |||
| 1986 – 2010 | 4 & 6 Cylinder | Yes | 7.5″ | |||
| 1999 – 2001 | Cobras | 8.8 | IRS | |||
| 2003 – 2004 | Cobras | 8.8 | IRS | |||
| 2011- 2015 | All | 8.8 | ||||
| 1979 – 2004 | ALL | 28 spline axles | ||||
| 2001, 2003, 2004 | SVTs | 31 spline | ||||
| 2005-2010 | V6 | 28 spline | ||||
| 2011-2015 | V6 | 31 spline | ||||
| 2005 – 2015 | V8 | 31 spline | ||||
Using the diagrams below, you can determine which size differential you have. Notice that the 8.8 is square and the 7.5 has a flat top and round sides.
| Axle code on B pillar | Ratio & type |
| BG | 3.31 Conventional differential Std. on V6 Mustangs |
| CD | 3.55 Locking differential Std. w/ manual transmission |
| CG | 3.31 Locking differential manditory on GT Automatics |
| CB | 3.73 Locking optional with manual transmissions |
