Tremec TR-3650 transmission

The TREMEC TR-3650 is a 5-speed manual transmission for longitudinal engine automobiles. It includes a 5th gear that functions as an overdrive gear, light-weight aluminum housings, a synchromesh reverse gear, and synchromeshed helical cut forward gears. It is manufactured by Transmission Technologies Corporation and is rated for 360 ft·lb_f (490 N·m) of torque. The loss in power transmission efficiency is rated at approximately 16% in 4th gear for a 2005–present Ford Mustang GT.

Gear Ratios

TR-3650 used in the 2001-2004 Ford Mustang GT

• 1st: 3.380:1
• 2nd: 2.000:1
• 3rd: 1.320:1
• 4th: 1.000:1
• 5th: 0.670:1 (used on 01-04 with 3.27:1 final drive)
• 5th: 0.620:1 (used in 03-04 with 3.55:1 final drive, Mach1)
• Rev: 3.380:1

Note that in the other TR-3650 applications, the 5th gear ratio is also available with 0.68(05-present with 3.55:1 final drive) and 0.74.

Recommended Oil and Fill Capacity

TREMEC engineers have recommended Texaco-Havoline Dexron III/Mercon Non-Synthetic ATF. There has been a significant amount of confusion regarding the proper capacity and proper type of ATF for the TR-3650 which may have a correlation with a rather large number of complaints about notchy shifting, shift "nibbling", noisy synchros, and grinding gears. The 2007 Mustang GT owner's manual specified the use of 3.0 L of non-synthetic Mercon ATF in the 3650, while the 2008 Mustang GT owner's manual now specifies the use of 3.0 L of Mercon-V ATF in the 3650. Dexron III/Mercon Non-Synthetic ATF seems to work best for pre-2005 Mustang GTs. NB: Tremec service manual also specifies Mobil 1 Synthetic ATF ( Tremec specification ET-M-99 ) in addition to Dexron III.

Applications

• 2001 Ford Mustang Cobra, top-loading shifter.
• 2001 Ford Mustang Bullitt
• 2001-2004 Ford Mustang GT, top-loading shifter.
• 2003-2004 Ford Mustang Mach 1
• 2002-2003 Ford Falcon BA
• 2003-2005 MG ZT 260
• 2005–2010 Ford Mustang GT, remote mounted shifter (TCET5757)

External links

• Official page
• roadandtrack.com Mustang data