An old timer as the years go but new to CJ7s.

[Eddie1939]

An old timer as the years go but new to CJ7s. Just recently, I jumped in buying a 1986 CJ7 , AMC 258 i6 / 4.2l cubic inch(AMC 258 i6 / 4.2l liter) inline six which, to my eyes, looks stock. Checking the VIN, I found the number identified my Jeep having a manual Transmission when it came out of the factory. However, someone along the way changed it to a 3 speed automatic. I'm starting some general maintenance right now like Transmission oil and filter change. HOW do I find out which automatic Transmission my CJ7 has in it? Is there a number somewhere on the Transmission ? Chilton's list 3 possibilities; Chrysler 904 and 999 and a turbo hydra-matic 400. When I check Morris 4X4 Center for the gasket and filter, they don't mention any of those three possibilities but list a A904 and A927 for the gasket. Morris doesn't list a filter. Just for general information, Does anyone have a 'one stop shop' for CJ7 parts? Is there a MOPAR website for checking original OE numbers?

 

[0822]

:ww:from Missouri... any pictures?

 

[Torxhead]

I am not much on automatics, but one way to check for which one you have would be the oil pan shape, I believe you can check this online. There is no "One stop shops" for Jeeps. Mopar did not make the CJ7 .

 

[Fastatv]

Welcome to the forum! Pretty much what Torxhead said. A common way is to simply look at the shape of the Transmission oil pan and compare to the three possibilities that you mentioned.
I can add this, if its the GM Turbo 400 , some where on the pan, you should see "GM" stamped into the pan.....if its a stock pan. Let us know what you find.

 

[NorthwestCJer]

Transmission Pan Shapes

Try starting here.
There is not a one stop shop. Most of us pick and choose places we buy. I use Summit Racing a lot. Your jeep is the last year of the AMC's. Usually those are a good find with a Dana 44 rearend.

good luck

 

[Buuushman]

The last 2 86' CJ7 's I saw with auto trannys had TF 999's in them. One is in my driveway waiting for me to get off my butt and put a radiator in it. The 904 was used for the 4 banger and I have yet to see the TH 400 in one that was not a swap.