T-5 Tranny help

[slow88stang]

I am should be getting a new 5.0 soon and I am very excited about it. The only thing that I dont like is all of the power loss through the auto tranny. I have a 4cyl 5sp right now that I will be keeping for parts. I want to know what the differences in the two t5's are i know that there is something about the pilot bearing or something but is there anything else. If they are both T5's they should be pretty well the same strength shouldnt they? And for the T5 swap I could use just about everything from my 4banger car right?
Any help would be great. Thanks

 

[SuperStang83]

I believe there is a difference in the input shaft and the 4 cylinder t5 is weaker!

Jakob

 

[slow88stang]

Well I have heard that if someone does a 4cyl to 5.0 swap that the tranny from the 4cyl can be used with a different pilot bearing. I am just wondering how strong it is. If it would last long bolted to a fairly stock 302.

 

[jrichker]

Longevity is a function of how you drive it. If you granny shift it and keep the RPM’s low, go easy on the launches, it will last a long time.

If you drive it like most 5.0 drivers it will be toast in a short while.

The 4 cylinder T5 has a lower torque rating then the V8 trans does. The first gear is like 3.97, which makes it almost useless with 3.55 or better gears. First goes up in wheel spin and is gone so quick that if you blink you'll hit the rev limiter.

All in all there are better ways of doing it. The innards are the same except for the input shaft and cluster gear. If you got a V8 T5, you could rob it for the parts you need to make the 4 cylinder T5 the same as the V8 one.

See http://www.ttcautomotive.com/English/onlineorder/product.asp to download a FREE service manual for T5 or Tremec 3550
You will need the Adobe Acrobat viewer which is also a free download – http://www.adobe.com/products/acrobat/readstep2.html

The Pilot Bearing You Need Is For A Ford Ranger Diesel From Auto Zone Part #14672

See the attached chart from Tmoss on T5's and their ratings & gear ratios