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T-5 torque ratings

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Old 04-16-2006, 09:42 AM
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Car: 1989 Iroc Z
Engine: 305 TPI
Transmission: T5
Axle/Gears: moser 28spline/Auburn posi w/ 3.73
T-5 torque ratings

How much torque can a t-5 handle before it blows apart?
Old 04-16-2006, 11:16 AM
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Car: 1985 IROC
Engine: 305
Transmission: T-5
Axle/Gears: factory
I've always heard a factory T-5 can handle up to 300 lbs./ft.
Old 04-16-2006, 12:40 PM
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Car: '88 IROC-Z medium orange metallic
Engine: L98
Transmission: 700R4
Axle/Gears: 3.27
The weak part of a stock setup is the clutch. I blew the disc into a hundred pieces a couple weeks ago with 215hp. I know a couple local guys with stock T5's behind mild L98's and they've lasted a few years so far but they don't race. I also have a customer with a turbo V6 4th gen that put 430hp/490tq to the wheels through a stock T5.
Old 04-16-2006, 06:35 PM
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Car: 1989 Iroc Z
Engine: 305 TPI
Transmission: T5
Axle/Gears: moser 28spline/Auburn posi w/ 3.73
sweet thats a good enough answer for me, beside if it breaks i can just put something better in.
Old 04-17-2006, 12:01 AM
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Originally Posted by Dialed_In
The weak part of a stock setup is the clutch. I blew the disc into a hundred pieces a couple weeks ago with 215hp. I know a couple local guys with stock T5's behind mild L98's and they've lasted a few years so far but they don't race. I also have a customer with a turbo V6 4th gen that put 430hp/490tq to the wheels through a stock T5.
so that means that if i get very nice clutch i am not goint to blow it??
Old 04-17-2006, 12:08 AM
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Originally Posted by jleable
sweet thats a good enough answer for me, beside if it breaks i can just put something better in.
where can i get a very nice t5 rebuilding kit??
Old 04-17-2006, 07:54 AM
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Car: 1989 Iroc Z
Engine: 305 TPI
Transmission: T5
Axle/Gears: moser 28spline/Auburn posi w/ 3.73
i'm really not sure were a good place to get a T5 rebuild kit is, but i have always wondered if there was a good kit that beefed these trannys up a bit so they can handle more torque.
Old 04-17-2006, 08:30 AM
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Originally Posted by jleable
i'm really not sure were a good place to get a T5 rebuild kit is, but i have always wondered if there was a good kit that beefed these trannys up a bit so they can handle more torque.
oh
Old 04-17-2006, 08:30 AM
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Car: 87 Iroc Z
Engine: 383ci.
Transmission: WC-T5
The clutch has nothing to do with the tranny's weakness at all. If you have a shop and are telling customers this, then maybe you should hire someone more informed.

Stock T5 is good for around 300ft/lbs of abuse, WC-T5 supposedly 330ft-lbs. I've been running a WC-T5 behind my pretty healthy 383ci for a while and it's been flawless so far. No powershifting or they'll pop, just like any other tranny will. if you don't shock load it, they can last a while. usually the 3rd gear goes out in them cause people tend to shift the 2-3 hard. The gears strip, synchro's fall apart...

There's a company called G-force that makes kits, and also builds up T5's to handle 600+ft-lbs. I know the mustang guys use something called an "X" kit? too to beef theirs up as well, which would work fine as long as you retain our bellhousing.
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