I have also heard that its a terrible idea... M5R2 is stronger from what i remember.
actually the M5 is a MAZDA trany and it was labeled ford tough. However, the M5 can widthstand tons more abuse than the T5 could ever dream of. At 300hp your just waiting for the T5 to detonate. At 600hp the M5 can still be a strong trany as long as its maintained.
^^note this is stock for stock
T5s are relatively solid. I have one from an '85 GT in my '66 Mustang ( carbed 5.0, TFS heads, Paxton supercharger, etc. ) and the car is making around 425 horses, running 12.1 at 114 with a "gentle" 3000 rpm launch on Mickey Thompson ET Streets, and it has held up quite well. Granted, if you abuse it constantly it will eventually fail - but if you're not dumping the clutch all the time or powershifting and you start out with a healthy T5 I can't imagine you'd break it unless you're putting over 400 horses to the wheels on sticky tires.
I just bought my first SC last weekend, so I don't know about the problems associated in a swap into a SC. It was a bolt-in for my '66 Mustang - all I had to do was have a driveshaft fabbed up and install a clutch cable and I was in business!! I'm sure it's quite a bit more complicated in an SC though.
T5s are relatively solid. I have one from an '85 GT in my '66 Mustang ( carbed 5.0, TFS heads, Paxton supercharger, etc. ) and the car is making around 425 horses, running 12.1 at 114 with a "gentle" 3000 rpm launch on Mickey Thompson ET Streets, and it has held up quite well. Granted, if you abuse it constantly it will eventually fail - but if you're not dumping the clutch all the time or powershifting and you start out with a healthy T5 I can't imagine you'd break it unless you're putting over 400 horses to the wheels on sticky tires.
I just bought my first SC last weekend, so I don't know about the problems associated in a swap into a SC. It was a bolt-in for my '66 Mustang - all I had to do was have a driveshaft fabbed up and install a clutch cable and I was in business!! I'm sure it's quite a bit more complicated in an SC though.