Way Outta Control
Join Date: Sep 1999
Location: The Palouse
Thanked 3 Times in 3 Posts
Re: How to tell if I have a TF 999 or TF 904?
Here's the donor vehicle chart for your 83 CJ7....
TF 999/904 Compatibility Chart
Model___________Year_________Style___________Engin e___________Axle Ratio
CJ Series_______81 AT__________CJ7______________258ci
________________82 – 84 AT____CJ7______________258ci
________________82 – 84 AT____CJ8______________258ci
Cherokee________82 – 83 AT_____________________258ci___________2.73
Grand Wagoneer__82 – 84 AT_____________________258ci___________2.73
J-series Truck__82 – 84 AT_____________________258ci___________2.73
Wagoneer________82 – 84 AT_____________________258ci___________2.73
It's very difficult to see any difference between the two externally. There are little differences between the the 904 and 999, except the 904 has one less clutch disk and plate. The TF999, TF904 and TF904 all share the same rebuild kit.
IMHO the best thing to do is to find the trnasmission number, its' located on the drivers side of the transmission. Wipe off the flat machined surface just above the pan and below the shifting lever shaft. That's where you'll find the number. Take the nubmer to the dealer and have the parts counterman look up which transmission it is. It's just simply the easiest manner in which to identify the two transmissions.
However even this will be confusing. As example:
In my 83 CJ7 I have what I thought was a TF999.
Chrysler says it's a TF904.
Becasue only 904's were supplied that year.
It is the original transmission
The transmission number says it's a TF999.
I did a transmission rebuild.
All the clutch disks fit into the clutch.
So I guess it really was TF999 after all. Happy New Year and Safe Jeepin'