The 2003 Mach 1 will be available with a choice of a five-speed manual or a four-speed automatic transmission with electronic overdrive. The 4R70W automatic transmission is upgraded with a heavy-duty gear-set, auxiliary fluid cooler and brazed 11.25-inch torque converter to withstand the added power of the Mach 1's MOD 4.6 V-8.
Mach 1 uses a new rear axle with a high-torque differential and a 3.55:1 axle ratio.
Mach 1's suspension matches its power with crisp road manners. The vehicle is lowered one-half of an inch compared to the GT and uses a firmer suspension for better-balanced ride and improved handling characteristics. The performance-handling package includes:
- New front and rear coil springs with adapted load and rate
- Re-valved Tokico© struts in front and shocks in rear
- Unique stabilizer bars front and rear
- Added frame rail connectors to stiffen the body







