1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

T-5 Transmission

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Old 01-15-2009, 03:59 PM
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T-5 Transmission

I know there is some debate about whether the t-5 will hold up to the weight of our trucks, but all that aside....

I found a T-5 with a different shifter configuration. The mustang shifter configuration puts the shifter coming up through the floor up against the bench seat. The trans I found looks to be a center mounted shifter.

What do you guys think? Do you think the shifter config on this trans would be better or do you see a problem?

Also, what would I need to bolt this trans to my 302? Right now I have a 4 speed floor trans, but my truck was originally a 3 on the tree.

Thanks!

T-5 t5 manual transmission tranny for sale
 
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Old 01-16-2009, 12:25 AM
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Ford put the t-5 behind all the 83- Mustangs and others so that trans could be from a 4 cylinder and there not as heavy duty as a V8.Also the newer the trans the better they are they worked out alot of the weak links.
 
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Old 01-16-2009, 02:46 AM
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personally i wish it said more of what it came out of... cuz there were several different T-5 models made by borg warner.. all built to handle different hp & Tq specs between both Ford and Chevy... with out knowing for sure.. you could get something thatd was built stong or something thatd snap the first time ya womped on the gas...
 
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Old 01-16-2009, 07:57 AM
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That t-5 is from a GM 1993 MY S 2.8L WC according to the ID key code in the craigslist add. It was behind a 4 banger and will not hold up to a 302. Plus without knowing for sure the input shaft is probably different as it was for a GM originally. Here is a good site:Identifying and Assembling a T5 5 Speed
 
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Old 01-16-2009, 09:19 AM
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I am pretty sure that the Chevy 2.8L was a V6...

The trans is a 93 model so it is a WC (world class) which is what they used in the mustangs. I will have to research some more about the input shaft.
 
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Old 01-16-2009, 09:25 AM
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Ok, Ok, Ok....

I just did some reading and there are endless threads on google about how the GM t-5 will not work with a 302. Thanks for the input guys. I was just in denial, thinking I had found the perfect trans option for my truck.
 
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Old 01-17-2009, 05:44 PM
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I've used a Mustang T5 in several F100 builds with great success. I had a 94 Cobra T5 in a 65 F100, behind a 347 stroker. It was great until I powershifted from 2nd to 3rd while racing a Camaro on the way to work one morning. Still made it to and from work, but made a bunch of noise and no 3rd gear. Went to a C4 with a shift kit after that. I custom bent the stock shift lever by cutting out notches and then welding them back up. On one truck, I used a bracket with 4 holes in it. Bolt the bracket to the stub sticking up from the T5, then bolt the shifter in front of the stub to the bracket. Clears the seat nicely, and shifts just fine. The aftermarket Mustang metal clutch quadrant will bolt to the side of your clutch pedal. Bore a hole with a hole saw in your firewall, and use an aftermarket clutch cable adjuster. The stock clutch cables work, but the aftermarket cables are longer and are easier to route, Either that, or swap to a fluid release bearing and clutch master cylinder.
 
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Old 01-17-2009, 06:59 PM
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stevef100s...

Thanks for the info. I think I am following your description of the bracket. Basically the shifter from the t-5 tail housing comes up too close to the bench seat. The custom bracket would bolt into the stock shifter handle spot at one end and then the shifter handle itself bolts into the other end of the bracket a couple of inches forward from the seat...correct? I had thought about something like this, but then what do you do about a shifter boot?
 
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Old 01-18-2009, 10:44 AM
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If I am correct, I believe the main issue with a T-5 from a GM is the input shaft length. This is true even if putting it behind a small block Chebby. I understand that a lot of guys simply trim the shaft to length and it seems you could do that same for a Ford. I guess the main benefit is that if you're looking at Fords an GMs, you may have a wider range of options on where the shifter is located.
Gene
 
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Old 01-18-2009, 05:32 PM
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its not just the length its the number of ribs/teeth too... less ribs/teeth on the shaft the weaker the tranny was...

for instance.. the V6 mustangs with the T-5's had a 10 Rib input shaft... where the older GT's that had the T-5's sitting behind the 302's had 21... which will be the same problem when ya try to put that GM t-5 that was made for the 4 cyl behind the v8 he has.. The other difference is in the size of the fly wheels and clutches... the V6 and 4cyls ran an 11" diameter flywheel and clutch.. Where the ones behind the 302's were smaller at 10 1/2" diameter...
 
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Old 02-02-2009, 05:41 PM
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i have a t5 from a 90 mustang gt in my 70 with a 302 and I rag on it all the time and its still doin pretty good. Gotta make sure you have the right bellhousing, input shaft, driveshaft lenght (mines same lenght as mustangs), and clutch flywheel.
 


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