The 2007 Mustang V8 lineup offered two factory transmissions on the GT: a 5-speed manual Tremec and a 5-speed automatic; the Shelby GT500, however, used a 6-speed manual Tremec. In short, GT owners could choose between manual or automatic, while the GT500 was strictly manual.
GT V8 transmissions (2007)
This section outlines the factory transmissions available behind the GT’s 4.6-liter V8 in the 2007 model year, including the standard manual and the optional automatic.
- Tremec TR-3650 5-speed manual transmission
- Ford 5-speed automatic transmission (part of the GT’s optional equipped package)
The GT offered two main factory transmissions to suit different driving preferences: a traditional manual for engaging driving and an automatic for convenience and everyday use.
Shelby GT500 transmission (2007)
The high-performance Shelby GT500 used a different drivetrain configuration, prioritizing performance with a dedicated manual gearbox.
- Tremec TR-6060 6-speed manual transmission
Unlike the GT, the 2007 GT500 did not offer an automatic transmission; it came with a 6-speed manual designed to handle the enhanced power output of the supercharged V8.
Aftermarket and swaps
While factory options are listed above, some owners explore aftermarket transmissions or modifications. Such swaps can require substantial customization, alignment, and supporting upgrades to the drivetrain and electronics.
Summary
For the 2007 Mustang GT, the standard V8 offered a choice between a 5-speed manual Tremec TR-3650 and a 5-speed automatic, giving drivers a manual or automatic experience. The Shelby GT500, which used a more powerful V8, came exclusively with a 6-speed manual Tremec TR-6060. Understanding these distinctions helps identify what transmissions are in a given 2007 Mustang V8 model.