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-lb 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 link

[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. The most recent Ford owner's manuals specify 3.17 quarts of a non-synthetic Mercon 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.