Auto transmission options - JeepForum.com
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post #1 of 23 Old 06-13-2011, 03:23 AM Thread Starter
JWow
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Auto transmission options

Going double duty with my CJ5, and would like an automatic transmission to make the off road driving easier.

What are my best options?

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post #2 of 23 Old 06-13-2011, 05:44 AM
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Only REAL option is get a CJ7!

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post #3 of 23 Old 06-13-2011, 06:08 AM
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If I were going to put an auto in my CJ5, I think I'd use a Turbo 350. It's pretty short for an auto. Even so, the rear driveshaft is going to be super short.

Might look into shoving the engine as far forward as possible and maybe scooting the rear axle back a few inches.

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post #4 of 23 Old 06-13-2011, 07:38 AM
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No CJ-5 ever came with an automatic.
They invented the CJ-7 to have enough room for the automatic transmissions of the day...

If you are going to shove an auto in that CJ-5, stick with something SHORT!
Like a TF-A999 ( 2/3 size TF A727)...

If you have lift, that will screw up your rear drive shaft angle even more!
Short drive shafts HATE severe angles.

Depending on your transfer case, you may be hunting some serious adapters or new transfer case...
Some of the Transfer cases don't like to mate to automatics, and adapters add to the overall length.
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post #5 of 23 Old 06-13-2011, 08:09 AM
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I am in the process of a swap from my 4 speed to a Torque Flight 999 trans right now, I will post up some photos along the way. As stated above, your going to be pressed for space, I just measured from the bellhousing to the mounting surface for the Dana 300 Tcase and I am at 22.5 inches. Not going to be a factor for me, however your CJ-5 is 10 inches shorter. Good luck and post photos of the route you take!!

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post #6 of 23 Old 06-13-2011, 08:48 AM
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Quote:
Originally Posted by JeepHammer View Post
If you are going to shove an auto in that CJ-5, stick with something SHORT!
Like a TF-A999 ( 2/3 size TF A727)...
You stated this last week as well, so I'm going to post the same photo showing the two side by side (727 on the left, 999 on the right) again to show that the 999 is not 2/3 the size of the 727. I can only guess that you didn't see this photo when I posted it last week in regards to your 999/727 length statements. The are the exact same length, so please stop claiming that the 999 is smaller! Neither is a good choice for an auto in a CJ5.
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post #7 of 23 Old 06-13-2011, 09:28 AM
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CSP... Could you please post up a closer photo of the 999? I would like to see the bends in the fluid lines. Also if you have another dipstick and tube laying around, I would gladly purchase it from you... They have them online, but want an arm and BOTH legs....

Thanks

Tom

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post #8 of 23 Old 06-13-2011, 09:58 AM
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That's a photo someone else took to demonstrate that they are the same length. I don't have a 999 to take a picture of. I might be able to get pictures of the fluid lines on a 727 I have, but I don't honestly remember even how long they are.

Got any junkyards near you? You can pull the dipstick and tube from a 727 and we have an abundance of FSJ's w/727s in the junkyards around here.
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post #9 of 23 Old 06-13-2011, 10:06 AM
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thanks... I wasn't sure it would swap. I heard the diameter was the same on the 904/999.. But couldn't find anything on the 727. I will jump over to ebay and get it on order!!

Tom

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post #10 of 23 Old 06-13-2011, 10:33 AM
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As far as I know the TF-999 will bolt right up to 258 and it will not have the pan clearance issues of the 727 for the front driveshaft. It will also bolt up to a Dana 300 (which you CJ5 may not have). I don't have a lift on my 1980 CJ5, and I do have the short Dana 300, so I have been considering trying the TF999 swap. I believe getting a good rear driveshaft that is well-made will take care of the length issue.

What about something like the GM Powerglide? Is it shorter than the TH350?
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post #11 of 23 Old 06-13-2011, 11:11 AM
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I run a 727 in my cj7. It bolts right up to 258 and d300 transfer. Works great for me in woods and mud
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post #12 of 23 Old 06-13-2011, 11:18 AM
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Sorry to hijack your thread, I just called the local part store to get a torque converter and had zero luck, they said the 85 CJ with a 258 never came with a TF999 so they didn't wanna talk to me. What year vehicle came with a 258 and 999 that they would have in their computer? Maybe a scrambler? If anybody knows right off hand that would be great, then I can get a TC and flex plate and skip the sarcastic point of view from the not so helpful guy behind the counter..

Thanks

Tom

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I bet the new bike riding monkey will pedal a lot faster!
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post #13 of 23 Old 06-13-2011, 11:22 AM
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Quote:
Originally Posted by budgetCJ7 View Post
I run a 727 in my cj7. It bolts right up to 258 and d300 transfer. Works great for me in woods and mud
Do you have a lift? I read that there can be issues with the 727's pan and the front driveshaft if you don't have a lift.
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post #14 of 23 Old 06-13-2011, 11:26 AM
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Yup, I didn't make myself clear,
TF A999 is much NARROWER, clears the front drive shaft better than the TF A727.
Much lighter weight also.

TF A727 will mate to shorter FACTORY OPTION transfer cases also.
Since TF A727 was put into full size vehicles, they didn't pay much attention to overall length. The factory CJ transfer cases will fit better than the huge transfer cases used in some trucks.

An inch or two makes a BIG DIFFERENCE, especially for the front drive shaft clearance when you are swapping into a CJ.
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post #15 of 23 Old 06-13-2011, 01:01 PM
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Quote:
Originally Posted by JeepHammer View Post
Yup, I didn't make myself clear,
TF A999 is much NARROWER, clears the front drive shaft better than the TF A727.
Much lighter weight also.
So by calling the TF999 short you really meant narrower? Ok, sure, whatever....

The 999 is probably within 10 pounds of the 727 too. I wouldn't really notice 10 pounds enough to call it much ligher. The Dana 300 will directly bolt to either one.

Quote:
Originally Posted by JeepHammer View Post
If you are going to shove an auto in that CJ-5, stick with something SHORT!
Like a TF-A999 ( 2/3 size TF A727)...
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