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Old 11-17-2002, 07:20 PM
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Post heavy duty t5 & a 383???

would a heavy duty T5 handle a 383 mildly built? (i.e. good heads with mild cam - will convert to FI in the future)

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Old 11-18-2002, 04:48 AM
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It,s not the horsepower that will break a trans. The torque is what does it. The biggest motor GM used in front of a T-5 was a TPI305. Ford, the 5.0. Any 383 can make more torque. The Mustang guys are all going to a Tremec TKO. The is avalible for the GM crowd as well. The TKO will take 4 or 500 ft lbs tq.

<a href="http://www.fortesparts.com/tremec/tr3550.html" target="_blank">http://www.fortesparts.com/tremec/tr3550.html</a>

Here is some info on the Tremec.

You can go with the T-5, and depending on how you drive the thing, it will hold up a good while. If you are going to run big rubber and plan on any power shifting at all you'll need an upgrade. Dan
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Old 11-18-2002, 06:45 AM
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now - what about drive shaft lenght? let's say I used the T5 temporarily (if the price was cheap enough), and then moved to a tremec. would I be able to use the same driveshaft with both trannies?
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Old 11-18-2002, 08:16 PM
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Never changed a T-5 to a TKO. Don't know for sure. Looking at the info avalible, the TKO looks to be about a 1/2" shorter. That shouldn't cause problems. The TKO uses a 31 spline output shaft. The yoke would need changed. A call to Fortes will get you a "for sure" answer. Dan
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Old 11-19-2002, 09:12 AM
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he can do either GM spline count so I could order the tranny with the same spline count as the T5... I guess I'll see how much I can get this T5 for, and if it's dirt cheap I'll run it until I blow it up (I'll be tender if I can help it )

if I gotta spend more then about a hundred bucks I'll save up for the tremec.
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