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Unread 08-11-2009   #1 (permalink)
97GT46 is offline Rookie

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Exclamation 1997 Mustang GT Transmission T45 for T5 Swap?

I have a 1997 Mustang GT. I was driving home from work today, went to reach for 5th gear and got nothing. The engine rev'd as if it was in neutral and could feel that it didn't grab anything. Reverse is also non existent now. I understand the only transmission available with this model is the T-45. I have heard this transmissions ins't the greatest. Would swapping for a T-5 be better? How easy is it to find something fairly affordable? Price is really the biggest priority right now. Should I just find and replace what parts I need in the T-45?
Also, the tag on the Trasmissions reads:
First line: F6ZR-7003-AXCRES AAK2163
Second Line: 1381-001 44155E

Thanks for any help.

The only mods are a Cold Air Intake, Hays Street Racing Clutch, Machined Flywheel, and Cat Back Exhaust.
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Unread 08-11-2009   #2 (permalink)
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A T5 will not fit your car. It would be a downgrade as well. I could go ahead and talk about a T56 from a 03-04 cobra or an upgraded T45 but if you don't want to spend the cash, then your best bet is to replace the T45 for another T45...

Just be aware that there are different types of T45s. Your T45 have a gear driven sensor (for the speedometer) vs a 99-01 where it has a magnetic speed sensor. In some cobras (I think all from 96-98--gear, 99-01--magnetic) have a different tail shaft housings (just the tail shaft, not the internals). Its a matter of swapping tail shaft which is no big deal though.
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Unread 08-11-2009   #3 (permalink)
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Thats good to know, thanks. So, A T-56 would work? And be an upgrade? I'm planning on looking around at some Salvage yards to find one, hoping to get a decent deal.
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Unread 08-11-2009   #4 (permalink)
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Quote:
Originally Posted by 97GT46 View Post
Thats good to know, thanks. So, A T-56 would work? And be an upgrade? I'm planning on looking around at some Salvage yards to find one, hoping to get a decent deal.

A T56 would work, but like Popeye pointed out with regards to the different T45's out there, you have to be careful about which T56 you choose.

Your '97 can only use a T56 that came out of a '96 and newer mustang (without modifying your car) as the 4.6 motor is not compatable with the 5.0 motor and tranny combos.

The T56 model TUET 1259 would work as it has a mechanical speedo output to run your gauges BUT it was from a Cobra and the mount pad for the transmission mount is in a different location than the GT models. You will need to modify your cross member. The T56 is only rated at 425ft/lbs where your T45 is rated at 325ft/lbs so it is a LITTLE stronger but not much.

The '03 Cobra Terminator came standard 6 speed but it is electronic speedometer and the chances of you finding one of those in a junk yard would be pure luck. :hihi:


Now, to the root of your problem.....Your 5th/reverse shift fork broke. The part to fix it is less than $75. If you can pull the transmission and do it yourself, you'll be on the road for under $100. If you cannot replace the shift fork yourself, it would be alot cheaper on your wallet to remove the transmission on your own, and take it to a transmission shop. They get BIG $$$$ money to remove and re-install a transmission into a car. If you do that part yourself, you can save a ton of money.

If you just want to replace the T45 with another, better, stronger T45, shoot me a PM.





Richard
Tech Support
Tremec TKO, T45 & T56 Transmission Systems
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Richard
Resident manual transmission/driveline guru :hihi:
Tech Sales Support
American Powertrain
A Tremec Elite Distributor
TKO, T45, 3650, T5 & T56 Transmission Systems
2199 Summerfield Rd
Cookeville, TN 38506 (931) 646-4836
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