I just called a trans shop and he said that the T56 is based on the T5... is that true?

The T5 is a 5 speed
The T56 is a 6 speed

Are they the same platform?

 

They're radically different in strength, size and application. There's almost no resemblance between the two. The T56 is larger and stronger. The T5 is much weaker and smaller. I've heard of people pushing 800 RWHP on a T56 whereas it's not uncommon for stock 5.0's to break their T5 transmissions (repeatly!!!)

 

ones a 6 speed and the others a 5 speed j/p

 

That's my concern, if this guy doesn't know the difference between the two T5 and T56, I don't feel comfortable taking it to him. Anybody know of a decent trans shop in So Cal?

 

T5 = junk T56 = Work of art.

 

Not sure if i believe that 800 hp on the T-56. You see guys with almost bone stock guys thrashing the T-56. With 800 hp they must really be babying it. I agree with everything else above though.

Neither the T-5 or the T-56 is really a true high quality trans, but the T-56 definatly takes a hell of a lot more abuse. The stock T-5 couldnt even handle the 87' IROC's 5.7 TPI torque.

 

a 10 bolt will eat it befor a t-56 will

 

Ehh, there are number of guys pushing high horsepower through a t-56. Couple of examples: Jordan musser and Rkrause both were pushing over 500rw driving the m6 and cutting sub 2.0 60".

 

Is that a stock T56 or were those built?