Originally posted by EF_Falcon_GuY
Well i think the ratio's would be different in the V8, hence suiting what ever V8 the tranny is suppose to go into. If you use a V8 T5 while mechanically it's got all the stronge bits, the ratio wouldn't suite the 6's. Thsi is what i heard about the AU that the tranny is a stronger unit in the 200kw and 220kw motors.
In EF's the XR8 and my tranny are identical apart from ratio's. Clutch is different.
The V8 and I6 'boxes are essentially the same. The input shaft on the V8 box is about 30mm longer than the one on the I6, so you can't swap them around terribly easily. The extension housings are also a different length.
From what I can tell, they are both about the same 'strength'. The T5 was not used in any V8 application until it got a highish first gear, so in theory it had greater strength. Unfortunately on the T5s, most of the problems occur when 2nd and 3rd break.
XF-ED I6 T5 ratios: 3.5, 2.14, 1.39,1.00, 0.72
EF-EL I6 T5 ratios: 3.25, 1.99, 1.29, 1.00, 0.73
V8 T5 ratios: 2.95, 1.95, 1.34, 1.00, 0.73
tremec 3550 3.27, 1.98, 1.34, 1.00, 0.68