Help ID my transmission..??

[elevenbravo]

I bought this rig with a converted auto Transmission . I don't know much about auto trannys and I don't know what I got. It is a 3 speed and it appears to mount directly to my AMC 258 i6 / 4.2l w/o adaptation. The only marking I can find/see is "002". the pan is help up with 14 bolts.

I have no problems with it, in fact I rather enjoy the auto this time around, mostly used for round town drivin...

 

[elwood blues]

I am of absolutely zero help with automatic transmissions, just wanted to welcome you to the site :ww:


I'm positive someone here will be able to help ID your auto tranny.

 

[elevenbravo]

Thanks, I have been browsing here for a
while. Finally got a log in.. I plan on tarring my rig down so I am sure I will be on a lot! this is a great site.

 

[FiNorman]

I'm even less experienced at transmissions... but always great to see an Eleven Boo.
RLTW/ATW

 

[dabbrowne]

Hello

A picture from the bottom showing the pan would help the ID.

 

[Petescj]

Sure its not the stock Transmission ? It could be a TF999 if it is. Heres my build thread where I just swapped one. Transmission starts page 4 I believe.

http://www.jeep-cj.com/forums/f98/81-cj-7-laredo-build-18126/

You can also look here:

http://www.jeep-cj.com/forums/f105/automatic-cj-transmissions-12123/

 

[csuengr]

It's a Torque-Flight, most likely a TF999 . The TF999 and TF727 share the same pan.

 

[dabbrowne]

This link may help

Chrysler Transmission Pan Shapes

 

[csuengr]

Argg. I keep forgetting that the 727 and 999 have different pans.

 

[elevenbravo]

Thanks for all of the responses. I now believe it is a TF727. It was definitely not the original Transmission because I bought it with the clutch pedal still screwed down to the firewall......I am thinking the factory Transmission was a T-5 .. it came with 2.73 gears in the diffs.... this brings my next question:

It tops out at about 65MPH and doesn't really want to push any more. It is a sloth on the take off. If I lower my gearing to say about (4.11's) would it be possible to still achieve 65MPH or possibly have more power to go faster on the highway? or will it just bring some low end torque and slow me down on the street top end? I'm running 33's (and like them).

I feel like my high gear ratio and 3 speed auto Transmission are a bad combo...(I want to keep it auto)...

any MORE pointers out there????

 

[Petescj]

The 80s and that crappy 2.73 ratio. Definately a low point for Jeeps along with some weak transmissions. I didnt see what size tire your running but you can play around with different ratios using the calculator below. Just plug in different ratios till you get the rpms at 65 mph between 2200 and 2500.

Gear Ratio Calculator

Thanks for all of the responses. I now believe it is a TF727. It was definitely not the original Transmission because I bought it with the clutch pedal still screwed down to the firewall......I am thinking the factory Transmission was a T-5 .. it came with 2.73 gears in the diffs.... this brings my next question:

It tops out at about 65MPH and doesn't really want to push any more. It is a sloth on the take off. If I lower my gearing to say about (4.11's) would it be possible to still achieve 65MPH or possibly have more power to go faster on the highway? or will it just bring some low end torque and slow me down on the street top end? I'm running 33's (and like them).

I feel like my high gear ratio and 3 speed auto Transmission are a bad combo...(I want to keep it auto)...

any MORE pointers out there????

 

[elevenbravo]

Thanks pete!That chart was just what I needed. I think a 3.73 will be where I need to be...