About All CJ-6s

Some people call it the original Jeep Unlimited. Some people call it odd. Some people don’t like the looks, but others do. It can have its own cult following. Many are being spared. It has a classic look, since it is a classic. It has a usefulness due to the extra length. It has a desired wheelbase for offroad use. It has a naturally “bobbed” tail that many pursue on the Scrambler. It is definitely somewhat unique. Whether you are a fan or dislike the jeep, they are out there. They are more and more rare, but can be found.

This webpage is devoted to general information on the CJ-6. Below are a bunch of facts on this rare jeep. This information has been compiled from multiple websites or personal knowledge. Feel free to contact me if I have incorrectly stated a fact.

Production: A total of 50,172 was made from 1955 to 1981. American sales ended in 1975. Outside of the USA, production continued until 1981.
Engine Options: The available engines depended on the years of production. These were available:
134 cu in (2.2 L) Willys Hurricane I4
192 cu in (3.1 L) Perkins Diesel
225 cu in (3.7 L) Dauntless V6
151 cu in (2.5 L) Iron Duke I4
232 cu in (3.8 L) AMC I6
258 cu in (4.2 L) AMC I6
304 cu in (5.0 L) AMC V8
Transmission: T90 3 Speed Transmission. Note, there was a change to transmission gearing around 1962. Pre 11/1962, the standard with T90 A (2.798 first) and 5.38 final drive ratio. Post 11/1962, the standard was the T90 C (3.34 first) and 4.27 final drive ratio. The maindrive gear (input) tooth count is 18 for the T90 A (pre 11/62) and it is 16 for the T90 C (post 11/62). I confirmed this with my two CJ-6s. The 1961 had the tooth count of 18. The 1963 had a tooth count of 16.
Front Axle: Dana 25
Rear Axle: Dana 44
Overall Length: Prior to 1972, the CJ-6 had a chassis length of ~148″. After 1972 they were ~151″.
Wheelbase: 101 inches in the 1955-1971 production and 104 in the 1972–1981

Interesting Facts:

  • Introduced in 1955 as a 1956 model, the CJ-6 was not very popular in the United States. Most were built for export.
  • Differences between CJ-5: The CJ-6 is exactly the same as a CJ-5, with this distinction…it is exactly 20″ longer in the middle.
  • The frame of a Jeepster Commando of certain years is a great candidate for a frame swap. It is simply longer than a CJ-6 frame. The last 12 inches or so will need to be chopped off. (I have verified this, as I am using a Commando frame for my CJ-6.)
  • Former President Ronald Reagan used a CJ-6 on his ranch in California.
  • A great source for Serial Numbers is here.
  • A list of Movies and TV Shows that showed a CJ-6 can be found at http://www.imcdb.org/vehicles_make-Jeep_model-CJ-6.html
  • Another source of other CJ-6s is YouTube.
  • Magazine articles on the CJ-6…click here. If you have more, please contact me. I would love to get a scanned copy.

Jeep DJ-6 (Postal Jeep)

  • DJ-6 is a 2 wheel drive version that came out for the post office.
  • The DJ-6 was a right hand drive that entered production in 1965 (need to verify). It was built from 1965 to 1973.

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