1980 cj 5 - JeepForum.com
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post #1 of 12 Old 06-14-2021, 12:17 PM Thread Starter
ash1300ad
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1980 cj 5

Hello All, first post here but I may be joining the ranks of Jeep ownership once again. Used to have a 95 YJ. Now I have the chance to get into a 1980 CJ 5 with a 304 V8 and manual trans.

Anything I need to know about this particular year? What are the specifics? Drivtrain wise and anything else.

Thank in advance for you insight.

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post #2 of 12 Old 06-14-2021, 02:10 PM
RiverandSand
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Garage
Narrow track, D30 front, AMC 20 rearend, first year for D300 Xfercase
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post #3 of 12 Old 06-14-2021, 03:55 PM
JeepdaddyRC
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Welcome! The 1980 CJ-5 is an "in-between" Jeep, with some unique features. The 1980 D300 TC has a short nose (only year) with a longer drive shaft. You will have a T-176 behind the V-8 unless someone switched it. Those are the most desirable and respected Jeep transmissions of the 80's and the only one for a V-8. 1980 was the true T-176 with a 3.52 first gear. All later models are the T-177 with a 3.82 first gear. No big deal, you probably have a 3.31 or 3.54 rear end. I don't think they moved to 2.73 as the standard axle ratio until the next year or two in AMC's desperate attempt to improve fuel economy. A V-8 is very desirable Jeep indeed, but not the most economical on gas. Look for a straight body and frame with as little rust as possible.
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post #4 of 12 Old 06-14-2021, 04:47 PM Thread Starter
ash1300ad
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Some good info. Much appreciated.
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post #5 of 12 Old 06-14-2021, 08:03 PM
BagusJeep
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It is all tried and tested mechanically, just look for the usual signs of wear and old age. Always check the 4x4 is active, some PO will take out the front driveshaft because the axle is bust and claim it is to improve mileage, heard it all.

The body tub is prone to rot, look under the front feet of the sports bar, along the edges of the floorpans. Any diamond plate armour is a rust spot, look at the inside of the panel. I have seen unscrupulous PO just glue new panels over the top of serious rot and then paint, be wary.

The frame rots at various places but look at the rear frame near the spring hangers and the front around the steering box.

The steering can be vague and have play, even on well maintained ones. Be wary of ball joints, track rod ends, steering boxes, steering shaft lower bellcouplings, they are all prone to wear if not greased. not expensive to fix but a PITA.


Come to that, look at the grease nipples. Are they there? Any sign of grease? If the rubber covers are perished, the joints are in need of replacement.

Do not pay for mods and accessories, they are rarely to the next owner's taste, so when you hear like 'i put 5 grand in lifting it man, it has to be worth 6 grand" just tell them you will have to pay to put it to some other state and that Just Empty Every Pocket is a brand name.

BagusJeep lives in Bali with far too many 4x4s:
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
1980 Land Rover Series III 109" troop carrier - ROVER
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post #6 of 12 Old 06-14-2021, 08:37 PM
80cj
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My 80 CJ-5 has been good to me. The only times it left me stranded was when the ignition module crapped out( 3 times). Fixed that with a DUI HEI. Other than that, no problems that I can see as being unique to that year. Standard gears in 80 models were 3.08 standard with 3.54 optional. Nice thing about 80 CJ's is that they retained the 6 bolt front hub. Later models came with skinny looking 5 bolt hubs. I will have had mine for 41 years in August and I've had offers for it but I think I'll hang on to it for a while. I regret selling a CJ-6 I had and I'm not going to make the same mistake.
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post #7 of 12 Old 06-15-2021, 12:26 PM
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in additon to the above, you will find other parts that are different on an 80 CJ. You need to look at your build date. If it is pre-June 1980, the get parts that are set to fit a 1979. If after June, then many parts will be of the 1981 series. An example is the power steering hoses - diffent fittings based on the build date...... Ask me how I know... LOL Also, if you want to adjust the speedo for tire size, you will need an external RPM reducer as you cant change out the gear like on an 81.

But on the bright side, you have a cool horn button insert that only came on the 1980.......
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post #8 of 12 Old 06-15-2021, 06:17 PM Thread Starter
ash1300ad
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Quote:
cool horn button insert
now thatís interesting, whatís cool about it?
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post #9 of 12 Old 06-15-2021, 07:21 PM
CJ5_Fan
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It the red white and blue AMC emblem and nothing else


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post #10 of 12 Old 06-16-2021, 08:54 AM Thread Starter
ash1300ad
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Quote:
Originally Posted by CJ5_Fan View Post
It the red white and blue AMC emblem and nothing else
That is a little cool, thx
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post #11 of 12 Old 06-16-2021, 12:52 PM
Domo
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img_3092.jpgSomething like this.
My 1980 CJ5
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post #12 of 12 Old 06-17-2021, 09:31 AM
CJ5_Fan
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Yep, that’s it….. very tough to find.


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