Sounds like a good way to go. I am replacing my t-18 with a built tf999 this winter. Try this guy SMITHBERG RACING 402-616-7643 PN 30072-Jake.

 

If you have a jeep tf999 it is already 2.78-1 first gear. I haven't heard of any lower gear sets for this transmission,not saying they don't exist i just have never heard of any. If you have a tf727,which looks the same except the pan is offset to the passenger side,you can get a lower first gear for that. I would call art carr performance transmission and talk to them. I believe they are the only ones that carry the "full manual reverse valve body" that you need. Make sure to talk with them about which torque converter your using. It will affect how your transmission performs. I went this route with them. I have a 999 with 2.78 first gear(stock) a well built stock stall converter and a full manual reverse pattern valve body. No tv or kick down cable. A very good cooler. Properly adjusted shifter linkage. Temperature gauge. I wheel hard with it and drive it on the street on occasions. The only time it ever got hot was when i first took it out and the shifter was not adjusted properly. Also avoid the ratchet type shifters or the best you will be able to do before you maybe roll is hit neutral. My .02
As far as you present problem,i would check your pickup and more likely your valve body for damage.

 

If you have a jeep tf999 it is already 2.78-1 first gear. I haven't heard of any lower gear sets for this transmission,not saying they don't exist i just have never heard of any. If you have a tf727,which looks the same except the pan is offset to the passenger side,you can get a lower first gear for that. I would call art carr performance transmission and talk to them. I believe they are the only ones that carry the "full manual reverse valve body" that you need. Make sure to talk with them about which torque converter your using. It will affect how your transmission performs. I went this route with them. I have a 999 with 2.78 first gear(stock) a well built stock stall converter and a full manual reverse pattern valve body. No tv or kick down cable. A very good cooler. Properly adjusted shifter linkage. Temperature gauge. I wheel hard with it and drive it on the street on occasions. The only time it ever got hot was when i first took it out and the shifter was not adjusted properly. Also avoid the ratchet type shifters or the best you will be able to do before you maybe roll is hit neutral. My .02

It's a 999. I think the tranny was out of the same CJ as the D300. It's an offroad only thing, so no worries for the street.

 

Dan from what u said last night. I think you might have knocked a check ball out or blew a servo for the reverse band. I ll print out some diagram from all data and see what I can come up with.

 

Sounds good. It should be mobile enough when you come down. The only thing that I can think of is that it somehow got dirt inside the lines? Would that possibly gall or degrade the check ball?

 

If the reverse band servo was fawked, It would not have reverse. It binds up because either the forward clutch is welding itself together, or smashing the pan caused a cross leak and is applying the foward clutch. When you put it in rev, it is trying to go forward and backwards at the same time.

 

It does have reverse, and it's not pretty. When I pulled it off the trailer to put it in the garage, it blew one of the trans cooler lines. What a GD mess that was.

Sounds like it's time to source a new tranny, huh? :mad3:

 

Even if it was trying to go in forward and reverse at the same time, it wouldnt bog the engine down to the point of almost stalling it. It wouldnt be any different than putting it in gear with your foot on the brake.

That said, either we are not getting the full story or something is really fawked.

 

That's the full story. Nothing else to say. <shrug>

nahh just fix the one you got, its either a servo,band or valve body issue

How about $100 for another tranny. That makes it a little easier pill to swallow. :smokin:

 

nahh just fix the one you got, its either a servo,band or valve body issue