Shoomakan
Member
Just read all of this. Very interesting and thank you. If what I understood is true, the preference seems to be TKO600, T56, and G-Force coming in last.
I'd also like to say that one of the reasons I love my BMW is because the Germans know how to design drive line components.
I mentioned that I might be using a Getrag 265 on my 5.0 when I put it together. For those who aren't in the know, it's a cheap little BMW tranny that came mostly on their 6 cylinder cars of the 80's and 90's. I believe the official torque rating was 360 ft/lb, and there are many turbo BMW's out there putting out 50% more torque than that and still using their factory G265.
The 6 speed on my 540i is rated for 420NM and is famous for handling enormous amounts of abuse. The king of the hill would be the G560, the V12 6 speed that only came on the 850i. Those things are rated at 560+NM (more than the Supra 2JZ transmission). You can imagine what they can handle.
My entire point is, since Getrag 265's are cheap and plentiful, someone REALLY should be working to putting them on a Fox. They'll handle the torque of a NA 5.0 very easily, and I imagine it'll take a well boosted 5.0 with slicks to shatter one to pieces. And when that happens.. $150 later and you have another one.
Added advantages of this tranny are a removable bell housing, which makes attaching it to other engines easier than you would think, as well as good gear ratios (but a much shallower OD. I know you Americans love your OD gears, but BMW/Getrag OD's are around ~0.80).
Unfortunately, you'll have to deal with modifying the tailshaft of the tranny as it is designed to bolt to an IRS rear. Unless you're as lucky as I am... I found a couple of old Opel Manta G265's, which are special because that Opel is a live axle rear...
I'd love to discuss this further and find new options and ideas. For example, not one person said anything good about the Cobra T5 Z transmission that came on the latest and greatest Fox. Are they really that bad?
I'd also like to say that one of the reasons I love my BMW is because the Germans know how to design drive line components.
I mentioned that I might be using a Getrag 265 on my 5.0 when I put it together. For those who aren't in the know, it's a cheap little BMW tranny that came mostly on their 6 cylinder cars of the 80's and 90's. I believe the official torque rating was 360 ft/lb, and there are many turbo BMW's out there putting out 50% more torque than that and still using their factory G265.
The 6 speed on my 540i is rated for 420NM and is famous for handling enormous amounts of abuse. The king of the hill would be the G560, the V12 6 speed that only came on the 850i. Those things are rated at 560+NM (more than the Supra 2JZ transmission). You can imagine what they can handle.
My entire point is, since Getrag 265's are cheap and plentiful, someone REALLY should be working to putting them on a Fox. They'll handle the torque of a NA 5.0 very easily, and I imagine it'll take a well boosted 5.0 with slicks to shatter one to pieces. And when that happens.. $150 later and you have another one.
Added advantages of this tranny are a removable bell housing, which makes attaching it to other engines easier than you would think, as well as good gear ratios (but a much shallower OD. I know you Americans love your OD gears, but BMW/Getrag OD's are around ~0.80).
Unfortunately, you'll have to deal with modifying the tailshaft of the tranny as it is designed to bolt to an IRS rear. Unless you're as lucky as I am... I found a couple of old Opel Manta G265's, which are special because that Opel is a live axle rear...
I'd love to discuss this further and find new options and ideas. For example, not one person said anything good about the Cobra T5 Z transmission that came on the latest and greatest Fox. Are they really that bad?
Last edited: