t-5 question

Wow the T5 innards look a lot different from the tremec 3550.

I began searching for an overdrive alternative to the C4 transmission in my 73 mustang when my C4 transmission stopped shifting to third gear regularly. I decided that I wanted to go with a manual transmission due to the relative ease of repair and rebuild of manual transmissions compared to automatics. My first choice was the T5 transmission installed in a number of Ford vehicles from 1986 to 1996. Torque ratings for the T5 ranged from 265 to 310 ft/lbs over the years and these transmissions were placed behind both 4 and 8 cylinder engines. The most desirable of the T5s are those from the 90 to 93 Mustang GTs and Mustang Cobras. After extensive research and some simple math calculations I decided against installing a T5 transmission into my 73 mustang because of the high amount of torque produced by my engine.

I decided to go with a Tremec 3550 transmission. The Tremec 3550 weighs 100 lbs. Although the Tremec 3550 uses a different bellhousing and is larger transmission it is a direct replacement for the T5 transmission. The Tremec 3550 has a 350 ft/lbs torque rating. There is also a heavy duty version of the Tremec 3550 called a Tremec TKO with a torque rating of 400 ft/lbs.