Difference between Mustang T5 and my T5
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Joined: Feb 2000
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From: Fairfax County, Va, USA
Difference between Mustang T5 and my T5
I was just wondering what the difference is between my bro's 5.0 T-5 and my 89 GM T-5 (it is a world class). My tranny is now making some weird noises, has 140K miles on it and takes a lot of abuse. However my bro's has 100K miles on it, take even more abuse than mine, and still sounds good and shifts good.
What's the difference between our transmissions and is there a way to rebuild my T-5?
Jason
What's the difference between our transmissions and is there a way to rebuild my T-5?
Jason
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Joined: Jul 1999
Posts: 18,457
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
Well, ummmm.... the Mustang one fits a F*rd, and yours fits a Chevy...
Inside they are very similar. This subject comes up all the time. The gears are different ratios, but they use the same bearings, the same size shafts, same synchros, etc. etc. There is no strength or reliability difference.
The F*rd is a lighter car, so at all times there is less load on the trans, so maybe that helps them not wear out so fast. But the trans itself is not significantly different.
A T-5 can be rebuilt. I long since lost count of how many times I've rebuilt mine. I've gone through 4 or 5 cores and rebuilt each repeatedly, a few replacement mainshafts when I happened upon them cheap, ots and lots of clutch gears and countergears, etc. The thing that wears out that you can't fix is the case: it stretches acros the front and allows the clutch gear and countergear to misalign. Once they have weakend there, there's nothing you can do except get another one. It's just really not enough transmission for going behind a stout V8.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
Inside they are very similar. This subject comes up all the time. The gears are different ratios, but they use the same bearings, the same size shafts, same synchros, etc. etc. There is no strength or reliability difference.
The F*rd is a lighter car, so at all times there is less load on the trans, so maybe that helps them not wear out so fast. But the trans itself is not significantly different.
A T-5 can be rebuilt. I long since lost count of how many times I've rebuilt mine. I've gone through 4 or 5 cores and rebuilt each repeatedly, a few replacement mainshafts when I happened upon them cheap, ots and lots of clutch gears and countergears, etc. The thing that wears out that you can't fix is the case: it stretches acros the front and allows the clutch gear and countergear to misalign. Once they have weakend there, there's nothing you can do except get another one. It's just really not enough transmission for going behind a stout V8.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
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Joined: Oct 1999
Posts: 6,621
Likes: 2
Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
Isn't it really torque that kills the trans?
I'm thinking it's because the mustang 5.0's had the large bore small stroke and make hp but not torque. That was the engine design, the 305 and the 350 both have longer stroke which are great for trucks that toe. My guess is the weight and the torque difference.
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, Jon (91 RS too many mods to list)
Dale Earnhart, you have done so much, you will be missed.
I'm thinking it's because the mustang 5.0's had the large bore small stroke and make hp but not torque. That was the engine design, the 305 and the 350 both have longer stroke which are great for trucks that toe. My guess is the weight and the torque difference.
------------------
, Jon (91 RS too many mods to list)
Dale Earnhart, you have done so much, you will be missed.
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Thirdgen89GTA
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Sep 12, 2015 08:39 PM
1992, 1996, 89, chevy, differance, difference, differences, differneces, gm, mustand, mustang, problems, t45, t5, transmission, transmissions
