TREMEC Web site
Transmission Technologies Corporation (TTC) manufacturers 4, 5 and 6-speed transmission.

There are 5 flavors of TREMEC 5-speeds at this site, with a hot link:

TREMEC 5 Speed Page

Quotes from the Web site:

T-5
This five-speed transmission from TTC was developed for a broad range of vehicle applications. The TREMEC T-5 is designed for passenger car and compact sport utility vehicle (SUV) requirements. (TREMEC bought all rights to the T-5 from B-W, and is now producing them, as well as parts for the 4 speed Top Loader that came with the Tigers and Fords, in both wide and close ratio.
TR-3350
The TREMEC TR-3350, from TTC, was developed using state-of-the-art technology. This five-speed overdrive transmission was designed for light duty pick-up trucks and similar vehicles with high torsional coupling engines.
TR-3450/TR-3650
This five-speed overdrive transmission from TTC was developed using state of the art technology. The TREMEC TR-3450/TR-3650 is designed for rear wheel drive pick-up trucks & cars and is ideal for specialty sports cars equipped with high torque engines.
TR-3550
This five-speed overdrive transmission from TTC was developed using state of the art technology. The TREMEC TR-3550 is designed for rear wheel drive cars and is ideal for specialty sports cars equipped with high torque engines.
T-45
This five-speed overdrive transmission from TTC was developed for adaptation to a wide range of vehicle requirements. Currently the TREMEC T-45 is being used on the Ford Mustang and Mustang Cobra.

Features:

• High contact ratio helical gears for maximum strength
  
• Needle bearings under all gears reduce friction, reduce noise, and improve reliability
  
• Taper bearings on the input, main and counter shafts provide ample torque capacity
  
• High strength aluminum housings reduce weight
  
• Engineered synchronizers to help gear jump-out
  
• Overdrive in fifth gear helps improve fuel economy
  
• Fifth speed synchronizer located on the counter shaft reduces rattle and shift effort
  
• Constant mesh reverse
  
• Multiple shift lever locations accepted without modification:
  
  • Front - with the shift lever directly over the case
    
  • Central - with the shift lever on the extension
    
  • Rear - (ideal for passenger cars) accommodates the lever on the rear most part of the extension
    

A manual is available for downloading at
TTC (TREMEC) Web site
It include the entire factory manual for rebuilding the TREMEC.


A comparative article for the TREMEC and T-5 can be read at
Fortes Parts Web site

More spec’s and dimensional drawings at a sub-page
Fortes Parts Web site sub-page
Note that the torque rating varies from site to site. Forte site reports 425 ft. lbs. vs. 350 at TTC (TREMEC) Automotive

Oil Recommended: GM Synchromesh, GM part number 12345349 (3 quarts). Optional fluids are Dextron II E and Mercon Synthetic. The GM Fluid runs about $15 a quart.



Miscellaneous notes:

The brake hydraulic line is here too. This may be a good time to replace the entire line to eliminate the long term corrosion mentioned in the News Group.

I used a Centerforce clutch with McLeod annular bearing. Very nice operation and it eliminates the shifting fork. By eliminating the shifting fork, you can clear up 2-3 inches on the drivers foot side for more comfortable location of the right foot. This required some minor plumbing of hydraulics but easier than plumbing a new slave from scratch. I used the rigid 90 6ANfittings to eliminate O-ring leaks. By careful set up and measurements, you can hit the adjustment perfectly the first time. The clutch has operated perfectly from the first day.

I closed off and reinforced the Alpine exhaust hole to strengthen the X-frame. I used the stock X-frame trans mounting holes. I fabricated a custom mount based on the stock holes and the transmission holes. I built the mount to match the stock transmission shock isolator. I used _ inch for the side and 3/8 inch for the center to mount the transmission mount.

Bob Hokanson has prepared a MS Excel Spread sheet for evaluating road speed, r.p.m., and gear options in 4 speed Tiger and 5 speed T-5 transmissions in "Excel Transmission Calculator " . Play with your plans on paper before making the investment. A FREE Excel Spreadsheet Reader download is on the page, as well. You don't have to buy the program to use this gem.