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-   -   Auto CJ7 (http://www.wranglerforum.com/f298/auto-cj7-237079.html)

dante2 04-22-2013 07:52 PM

Auto CJ7
 
How hard is it to find a CJ7 with an automatic? Or how difficult to swap a 4spd to auto?

faultymechanics 04-22-2013 09:54 PM

It all depends on the motor being mated to it. I have been told many times on how easy a tranny swap is on these old jeeps. My jeep is an auto with a TH350 trans hooked to my sbc 327. If you can find a jeep with a chevy swap it will probably be auto. At least by me they all are.

lynn 04-23-2013 06:14 AM

There were some automatics installed at the factory in CJ7s. These were usually backed by the quadratrac tcase, a BW 1332 IIRC. I cannot remember which tranny was stock in the CJs (FSJs got the TH400)
The BW 1332 tcases are actually pretty good units when new/refreshed, the two biggest issues were an odd location for low range engagement, and the tendency for the chain to stretch.
There are still a few stock CJ7 autos around, but you may look long and hard before you find one.
It will be easier to find a good CJ7 and do the swap yourself.
Check Novak and Advance Adapters for adapters for most engine/tranny combos.

derf 04-23-2013 09:24 AM

The Quadratrac CJs in the 70's ran a TH400 like the full size Jeeps.

Starting in 1980, Jeep dropped the TH400 and Quadratrac. They ran a Chrysler 3 speed with the Dana 300. For the 4 banger, it was the 904/909. Behind the 4.2 they used the 999.

And x2 on checking out Novak Jeep Conversions - Home or AdvanceAdapters.com | Engine & Transmission Conversion Adapters - Advance Adapters for kits to swap. Novak has several pages that go into detail about swapping transmissions and what's involved.

n2dixie 04-23-2013 07:51 PM

Swapped my T5 for a 999 on my 82 CJ that i found in the junkyard. Had to buy a torque converter and a flywheel. The hardest part was the linkage from the carb to the passing gear. Couldn't find one anywhere, so I found an automatic CJ for sale in the want ads and talked the guy into letting me take it off and make a pattern. Took some time but I managed to get it. If you find one in the junkyard, be sure to ask them for everything. Good luck!

dante2 04-26-2013 05:50 AM

I found an auto CJ7 local to me. I am going to check it out on Saturday. The owner says it's a original Arizona jeep with 108k and no rust. Any tips on problem areas to watch for?

NHflannelman12JK76CJ5 04-26-2013 05:59 AM

if AZ, you shouldn't have to worry about rust. crawl under and get a good look at the frame. I've seen cracks in the frames around suspension mounts. find out what the rear axle is and see if he knows the gears - OR - has the original paperwork (if it's "Original Arizona" let him prove that to you).

Take your time, don't be afraid to ask questions.

n2dixie 04-26-2013 08:28 PM

Windshield frame and stiffener behind where the j is stamped in jeep in front of the doors are the two worst spots for rust on cj's. With 100k it is probably ready for rear seal and an oil pan gasket. I'd check for slop in linkage also. Good luck.

aelwero 04-28-2013 11:25 AM

Quote:

Originally Posted by derf (Post 3672285)
The Quadratrac CJs in the 70's ran a TH400 like the full size Jeeps.

Starting in 1980, Jeep dropped the TH400 and Quadratrac. They ran a Chrysler 3 speed with the Dana 300. For the 4 banger, it was the 904/909. Behind the 4.2 they used the 999.
.

They also used the TF727, T35, and the 904 in a bunch of DJ-5's, but those came sans transfer case ;)

dante2 04-28-2013 05:02 PM

Thanks for the tips guys. The owner had something going on so I didn't get a chance to look at it. Maybe tomorrow or Tuesday. He is asking $7750 and firm on price according to the ad. It has a six cyl., hardtop, and doors. Looks like new 31's and a good battery but that is about all I can see. Seems high to me but the CJ's I got before were fixer's and I got them cheap. What do you think?

bignugly 05-05-2013 11:44 AM

just pulled the auto out of mine because with a quadratec transfer case i didn't have a low range

reno2486 05-10-2013 07:54 AM

The three most common Chrysler Torque Flite transmissions are the 727, 904 and 999. Of the three the 727 is the most robust, it's main disadvantage is the lower mechanical first gear ratio (it has a 2.45 where the others have a 2.74)
There are kits available to upgrade this, however. Good Luck


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