Tremec TR-3650 transmission

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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·lbf (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.

1 Gear Ratios
2 Recommended Oil and Fill Capacity
3 Applications
4 External links

[edit] Gear Ratios

TR-3650 used in 2001-present Ford Mustang GT's
1st: 3.380 :1
2nd: 2.000 :1
3rd: 1.320 :1
4th: 1.000 :1
5th: 0.620 :1
Rev: 3.380 :1

Note that in the other TR-3650 applications, the gear ratios are the same with the exception of 5th gear.

[edit] 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 3.0L of non-synthetic Mercon ATF in the 3650, while the 2008 Mustang GT owner's manual now specifies the use of 3.0L of Mercon-V ATF in the 3650.