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Tremec for mustang.

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Old Sep 2, 2005 | 12:36 AM
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Default Tremec for mustang.

I have seen here that if you fit a T5 transmission from a mustang, you nees a 1/2" adapter plate. Do you still need a 1/2" adapter plate if you fit the tremec 5 speed transmission from a mustang to a 350 engine?

Thanks Neil.
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Old Sep 2, 2005 | 01:25 AM
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Originally Posted by Fleetwood
I have seen here that if you fit a T5 transmission from a mustang, you nees a 1/2" adapter plate. Do you still need a 1/2" adapter plate if you fit the tremec 5 speed transmission from a mustang to a 350 engine?

Thanks Neil.
yes. The bolt pattern and input shaft length is differnent for a mustang regardless of who builds it. Of course you could always get a tremec for a GM and not have those issues.

Last edited by Retro78; Sep 2, 2005 at 01:27 AM.
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Old Sep 2, 2005 | 03:50 AM
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Originally Posted by carguy4sure
yes. The bolt pattern and input shaft length is differnent for a mustang regardless of who builds it. Of course you could always get a tremec for a GM and not have those issues.
Just like to know if the input shaft is the same length as the the T5 & if the spacer will be the same. Also the mustang tremecs are more readily available second hand, infact I just may be able to get my hand on one.
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Old Sep 2, 2005 | 07:44 AM
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Originally Posted by Fleetwood
Just like to know if the input shaft is the same length as the the T5 & if the spacer will be the same. Also the mustang tremecs are more readily available second hand, infact I just may be able to get my hand on one.
The adaptor plate is required for both the mustang T5 and the mustang Tremec like Doug already mentioned but the two adapters are NOT the same. The mustang T5 in a mustang uses a modern bellhousing regarless of weather it is a 1980 series or the 1990 series. The mustang Tremec takes an old fashion bellhousing so the mustang guys from say 1990 can not just bolt in a Tremec. They need the older style bellhousing.
So it requires different adaptors for the T5 and the tremec.
I also agree the mustang tremecs are cheaper and easier to come by used the the already modified GM tremec.
I could have easily gotten in producing the adapter plates on a NC milling machine but I loose control of installation once a customer gets the plate. If the customer doesn't know what he is doing the plate can be installed wrong, out at little as 3 hairs and you are out of tollerance. The plates are simple to produce, fine tuning is the thing and requires some knowledge.
Doug and I will produce a plate for his swap but I will be sure of the final installation that tolerance are keep to a few thousands and then the plate is doweled to the bellhousing to guarantee future perfect alignment.I actually try for zero tolerance and will NOT accept the .005 allowable.
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Old Sep 2, 2005 | 09:14 AM
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Norval, Thanks for the info, but is the input shaft on the tremec also 1/2" to long & would it be possible to match the tremec to a 350 engine with an adaptor plate?

Thanks Neil.
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Old Sep 2, 2005 | 09:47 AM
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Originally Posted by Fleetwood
Norval, Thanks for the info, but is the input shaft on the tremec also 1/2" to long & would it be possible to match the tremec to a 350 engine with an adaptor plate?

Thanks Neil.
Both the tremec and the T5 are exactly 1/2 inch longer then the GM versions of each. Yes with a 1/2 inch adapter the ford tremec will bolt right in.

This is a 1/2 inch aluminum adaptor plate between the bellhousing and the T5
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Old Sep 2, 2005 | 04:15 PM
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Norval,
I will be starting on building my T5 this coming week. It needs a counter shaft and then I will be getting a chevy bellhousing. I would be willing to buy an adapter plate from you realizing that I need to zero the tolerance to the bellhousing. I'm sure with your instructions my shop and I could get the tolerances to zero. Let me know if you are interested. It would make the process a lot simpler for me. I appreciate any help you could give me.
Bernie
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Old Sep 2, 2005 | 04:32 PM
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ask ddecart... he did this mod if i rmember right
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Old Sep 2, 2005 | 04:45 PM
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Aflac,
Thanks, any help I can get from ddecart and Norval would be greatly appreciated. I can do the nuts and bolts grunt work but fabrication is not a specialty of mine. The company I work for has an awsome machine and welding shop and we build custom machinery for people all the time. If I had the adapter they could get it to zero tolerance for me with no problem.
Bernie
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Old Sep 2, 2005 | 08:19 PM
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Bernie I hate to get into machining for others. To set up a CNC program to run a single adaptor off is not worth it. I am making one for Doug by hand.
I shoe horses nights and the money is too good. If I charged you for time what I make on shoing the price would be outragous. Again I like to control what I make.
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Old Sep 3, 2005 | 10:17 AM
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Norval,
Thanks for getting back to me. I truly understand your situation. I was wondering, do you find your center reference to the bellhousing and then fit the tranny to the adapter or visa versa? I would think you center the adapter to the bellhousing first. Again, I do have a great shop available to me and friends who can make the adapter. I have two T5 world class trannys and one is from a cobra, one is a 91 and one is a 93 model. They have different overdrive gear ratios so I have to find out which one has the better overdrive ratio for what I want. Again, thanks for all your help and information on this project.
Bernie
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Old Sep 3, 2005 | 10:34 AM
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if i remember right, ddecart had his input shaft shortened to take up for the difference in length...
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Old Sep 3, 2005 | 10:54 AM
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My TKO and the one Oliver had came from Hanlon Motorsports. They have a web-site and are a Mustang based business. At the time I purchased my TKO they were taking a Ford TREMEC transmission and doing a conversion process to it to allow fitting to a GM bell housing. I think they are still doing it.

The process was fairly simple. The imput shaft was cut to proper length and then the diameter turned down for the Chevrolet pilot bearing. Next the the front bearing cover was turned to GM bell housing diameter.

The transmission case was then altered by elongating two for the mounting holes and two new holes drilled into the face of the case for the GM pattern.

I don't believe this will work on the T-5 Ford transmission, but it will definitely work on the TREMEC. jim
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Old Sep 4, 2005 | 04:50 AM
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Originally Posted by PROSOUTH
My TKO and the one Oliver had came from Hanlon Motorsports. They have a web-site and are a Mustang based business. At the time I purchased my TKO they were taking a Ford TREMEC transmission and doing a conversion process to it to allow fitting to a GM bell housing. I think they are still doing it.

The process was fairly simple. The imput shaft was cut to proper length and then the diameter turned down for the Chevrolet pilot bearing. Next the the front bearing cover was turned to GM bell housing diameter.

The transmission case was then altered by elongating two for the mounting holes and two new holes drilled into the face of the case for the GM pattern.

I don't believe this will work on the T-5 Ford transmission, but it will definitely work on the TREMEC. jim
That definitely sounds like another option, thanks for that I will check out their web site. What kind of hassle is it to remove the imput shaft?

Neil.

Last edited by Fleetwood; Sep 4, 2005 at 04:53 AM.
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