727 lockup tc question?? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 03-29-2001, 01:28 PM Thread Starter
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727 lockup tc question??

Anybody know what years had the lockup tc with the 727? Looking for one to put in the waggy.

CJeep

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post #2 of (permalink) Old 03-29-2001, 01:55 PM
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Re: 727 lockup tc question??

According to my manuals, the TF727 is a NON LOCKUP transmission, through out it's production years. That's one of the reasons for the TF999/904 introduction to meet CAFE standards and raise MPG.

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post #3 of (permalink) Old 03-29-2001, 04:36 PM
 
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Re: 727 lockup tc question??

there were some Tf727s that were lockups the year isnt a good enough way to tell, it was a delete option on tow packages on Gwags.

you have to check the input shaft to know for sure if one is lockup or not.

I wouldnt use one just for MPG help, it isnt worth much unless your always in high gear cruise, and then its probably NOT quite as durable as a non lockup converter unit.


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post #4 of (permalink) Old 03-29-2001, 05:17 PM
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Re: 727 lockup tc question??

I wonder if the TF727 valve body would have an additional lock up module on it like the TF999?

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post #5 of (permalink) Old 03-29-2001, 05:56 PM
 
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Re: 727 lockup tc question??

yes it does Leve

its about 1/4 total valve body size, and has that shiney bent tube running to it.



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post #6 of (permalink) Old 03-29-2001, 06:31 PM
 
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Re: 727 lockup tc question??

check it out Leve,

this is the valve body and a cheap ass kickdown band.
<a href=http://albums.photopoint.com/j/View?u=266042&a=1979394&p=45165599>See my photo, vlvbdy at PhotoPoint</a>

this is the whole tranys from a 1980 V8 FSJ

<a href=http://albums.photopoint.com/j/View?u=266042&a=1979394&p=45165601>See my photo, cherotrans at PhotoPoint</a>



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post #7 of (permalink) Old 03-29-2001, 06:41 PM
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Re: 727 lockup tc question??

Well then... when looking at a transmission to determine if it's lock up the easiest way I know of would be to:

1. Drop the Pan.
2. Look at the figure below and see if it has the lock up module and fuild supply tube.



3. If it has that module and tube... it's a lock up TF727.

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post #8 of (permalink) Old 03-29-2001, 06:45 PM
 
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Re: 727 lockup tc question??

yeah but I think thats the TOP of the valve body isnt it?

the filter bolts to the bottom, and you would need a dental mirror, a good light and some luck to see around that thing, while its in teh vehicle at least

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post #9 of (permalink) Old 03-29-2001, 07:11 PM
 
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Re: 727 lockup tc question??

here are 2 photos of the input shaft on a lockup TF727, sorry I dont have a photo of a non lock up to compare too, basically the non lockup has splines all the way to the end where the lockup has a smooth end. check it out.

this is the front of a AMC tf727 with lockup

<a href=http://albums.photopoint.com/j/View?u=266042&a=1979394&p=45170120>See my photo, smooth end=lockup at PhotoPoint</a>

this is the same shaft removed

<a href=http://albums.photopoint.com/j/View?u=266042&a=1979394&p=45170122>See my photo, inpout shaft removed, smooth end=lockup at PhotoPoint</a>



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post #10 of (permalink) Old 03-30-2001, 12:36 PM Thread Starter
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Re: 727 lockup tc question??

Thanks guys,

It would really be nice to know how to tell them apart without having to tear them out or drop the pan! I have three non lockups! Maybe someone will post and give us some part #'s or something. If I get a chance I'll crawl un der the old J10 and get the #'s off it. I know it's a lockup. Will post it so we all maybe can figure a way to tell.

Thanks again,
jackie

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