Late 1971 cj5 v-6 factory 4 speed restore.

Took some pics of the trnny cover . The top is comparing it to a 3 speed cover .



.com/user/sawilly/media/imagejpg3.jpg.html][/URL]

 

Looks 100% factory to me ... except for the OD shifter.

It has the correct-for-71 one-piece bell and the correct T18 plate adapter. Floor panels look original.

The casting numbers on the transmission won't tell you the ratio. 13-01 is T-18.

If there is no tag under one of the bolts on the transmission top, AFAIK your only way to determine the ratio is by counting the teeth of the transmission input gear. Wide ratio (6.32:1 1st) has 17 teeth, and close ratio (4.02:1 1st) has 23 (info per Nick in an earlier post).

 

sawilly would you measure rear drive shift length , curious minds would like to know

 

Compressed 13.25 center to center of u joint cups
Extended 14 3/4"

 

Here is the tranny input shaft .

 

Thanks Timgr this helps confirm the Jeep more . i haven't pulled the tranny cover yet but i am pretty sure it is the 4:1 1st . It is geared pretty hi compared to my other 6.3:1 geared t18 in my other jeep.

 

That all appears to be correct. I say it is an original. I have owned over 50 jeeps, and every one of them 1975 and older have had the shift pattern decal on the dash.

 

I know that this is an old post but I may be working on a factory 4 speed project soon. First, thanks for starting this thread - some very good information.

Question: Is the tub on a 1971 four speed the same as the tub on the four speed? It looks like the tub sheet metal may be cut back further for the 4 speed?

 

Yes, the tub is cut back to clear the 4-speed. There are different floor plates for the T-98 or T-18. AFAIK there are no other mods to the tub.

Look here - `70ish CJ5s? - this is an intermediate Jeep, so the transfer case shifter is different, but the main cover is the same. The floor is crudely cut back, then the new covers are held down with big hex-head sheet metal screws. Surprisingly ad hoc, considering how long the CJ has been offered with a T-98 or T-18.

It's ok, even preferred, to start a new thread and refer back to the old one. Just FYI.

 

Tim - Thanks for the additional information and for including the link to the other thread. Very interesting! I did not see that other thread. Also thought the information on the original cost of the T-18 relative to the cost of the Jeep was informative.

The floor plates for the T-14 three speed (1970ish) had a little factory cut out for adding an overdrive. I wonder if that cut out (in the top cover for the factory T-18) in the top photo on this page was for an overdrive shifter. Wonder if anyone has a factory 4 speed set up with an overdrive. Pictures would be appreciated.

 

An overdrive was a dealer installed item. Nothing on the floor pan was ever altered from the factory. If there is a cutout for an OD shifter then somewhere in the Jeep's life it had an overdrive installed.

 

One more question - RockAuto does not list a separate clutch for T-18 vs the T-14 for 1971. Does anyone know if the clutch is identical? Perhaps just the throw out bearing is different? Thx.

 

Do you happen to have a picture of how the overdrive shifter comes up through the floor pan? It looks like your top cover has a notch cut in it on the right side is that for the od ****er? Do you know if that OD shifter is Warn or other? Thanks...