waynegrovs 1 Posted September 20, 2014 I was talking with and engine builder who told me that internally the ford 6 cylinder and 8 cylinder are the same and that the box can handle over 500hp is this true Share this post Link to post Share on other sites
Stumps 311 Posted September 20, 2014 hmmm I wouldnt' put a 500hp engine with a T5 myself as I have destroyed a couple of those with an OHC sixes making around 300hp, maybe if you want to cut corners you could get away with a T5 for a little while, personally I'd pony up for a tremec or a T56. For mildish applications the T5 should be fine, as for the difference between the 6 and 8 version couldn't really tell you but the last two that I broke were from ED XR8's and the 4 litre trashed them after a few months of what could be considered abuse. Share this post Link to post Share on other sites
gerg 10,871 Posted September 20, 2014 The 6 cyl ones had shorter 1-2-3 ratios (1st was 3.47) and V8 ones had 3.25 1st. The taller the ratio, the higher the torque rating. The T5Z had 2.95 1st and was the highest-rated factory T5 made. Your engine builder should be talking in torque figures not horsepower, as it's torque that kills a gearbox. Sure it could handle 500 hp on a rotary spinning to 9 grand with fuck all torque. See what I'm getting at? 2 Outback Jack and NZXD reacted to this Share this post Link to post Share on other sites
