J4000 Question

[VAJ4000]

I am new on this forum but I have tried to search around and find the answer to this question but so far I haven't had any luck. Please point me in the right direction if it has been covered before.

This weekend I picked up my First FSJ it is a 1973 J4000 Automatic/360 and I can't find anything to tell me What makes a J4000 different from the J10 and J20?

[LRRH]

primarily, the year does. there were plenty of other changes along the way too......

63-70 = j100/200/300
71-73 = j1000/2000/3000/4000
74-87 =j10/20


hope this is the info you were looking for.

[Dmntxn77]

Was the J4000 is a 1/2 ton right? In that line-up, it seems like it would be a 3/4 ton... D44 F&R???

[COLOFIREMAN]

Ok my 73 J4000 has the springs on the outside of the frame on the front, my 74 J10 doesn't. My 73 has frame renforcments under the cab, 74 doesn't, 73 would have come with front drums which it did, my 74 had stock disc brakes. the 73 has a post style spring mounts front and rear, the 74 front springs are under the frame and rears are mounted with brackets. There's more but I'll let others post them.:D

[VAJ4000]

I am going back to my folks house this weekend so I will take pictures. I know it has front drums. I am not sure on the axles it has 5 lug wheels.

[COLOFIREMAN]

I am going back to my folks house this weekend so I will take pictures. I know it has front drums. I am not sure on the axles it has 5 lug wheels.

If it's a J4000 it should have 8 lug wheels, but there was a year when they used an offset D60 semi-float axle with a 5 on 5.5 bolt. Let us know.:thumbsup:

[jpjeeper]

primarily, the year does. there were plenty of other changes along the way too......

63-70 = j100/200/300
71-73 = j1000/2000/3000/4000
74-87 =j10/20


hope this is the info you were looking for.

Guess that makes my 67 J3000 a rare bird...

[jeepmandan]

If it's a J4000 it should have 8 lug wheels, but there was a year when they used an offset D60 semi-float axle with a 5 on 5.5 bolt. Let us know.:thumbsup:

Only the 8000lb gvw J4000s had 8 lug.
7000lb gvw had D60 semi float 5 lug rear and D44 front
All others were 5 lug D44s front and rear

[KaiserMan]

A J4000 is just a long (132") wheel base model. It could be had in 1/2. HD 1/2, 3/4 and 1 ton versions. The model number would be J4500, J4600, J4700 and J4800 repectively.

Here's a quick Jeep designation break down.

Wagoneer

J100 (110" wheelbase) 1963-1973

Gladiator/J-Truck

J200/J300 (120/126" wheelbase) 1963-mid 65

J2000/J3000 (120/126" wheelbase) late 65-70

J3000 Camper Truck (132" wheelbase) late 68-70

J2000/J4000 (120"/132" wheelbase) 71-73

J4000 Camper Truck (132" wheelbase) 71-73.

[Dmntxn77]

If it's a J4000 it should have 8 lug wheels, but there was a year when they used an offset D60 semi-float axle with a 5 on 5.5 bolt. Let us know.:thumbsup:

I have a line on a 73 J4000 Custom Cab with that 5 lug D60... Are they desireable?? By who? CJ guys?

[KaiserMan]

I have a line on a 73 J4000 Custom Cab with that 5 lug D60... Are they desireable?? By who? CJ guys?

It's a good axle, for sure. 1.5" 35 spline axle shafts. You don't see a lot of people running them, other then stock FSJ's but I've seen a few under baby Jeeps.

[fulsizjeep]

J4500 - D44 front & back 5 lug
J4600 - D44 front, D60-2 rear 5 lug
J4700 & J4800 - HD44 front, FF D60 rear 8 lug

right? :cool:

My 1st FSJ was a 72 J4600. Krista's dad has one almost identical to it. The D60-2 is strong axle. He used it for construction truck for 5 years hard labor.
The J10 & 20 designations were also deceiving because there were also different GVW in those too.

[KaiserMan]

J4500 - D44 front & back 5 lug
J4600 - D44 front, D60-2 rear 5 lug
J4700 & J4800 - HD44 front, FF D60 rear 8 lug

right? :cool:



Almost. The J4700 also used the 5 lug D44/D60-2.

Only the J4800 Camper Truck (it's own seperate model) got the 8 lug D44HD/D60-3.

[fulsizjeep]

I figured you had it covered Thomas. Been a while since I was tuned in to those models. Now that we have a J4800, I am trying to learn it again. This one has a 401 cueing up in the future. :thumbsup:

[KaiserMan]

I think a 401 will be right at home in a Camper Truck, they got the best Jeep had to offer.

Mo' Power!

[Herk]

Your door plate will tell you the GVW. Other than that 73 was a transition year; dual-wall bed w/internal latch tailgate and large lights, later "AMC" dash, earlier post mount frame and springs, closed knuckle front axle with drum brakes, and 5-lug wheels.

Nothing particularly wrong with the early setup as disks can be fitted and spindles beefed up on the front axle. New 4" lift springs are available for the earlier style rigs through Hell Creek or BJ's. Beyond that it is a classic American pickup from the "metal age" and has pretty straightforward parts.

Have fun with it but resist the temptation to make it into something it isn't. It was designed as a utility vehicle first and basic transportation second. If you want something that goes 100 MPH, blasts through mudholes, or crawls over 5-foot boulders without a serious amount of modification (cash), look elsewhere. BUT, if you want something which starts whever you turn the key, gets you anywhere you reasonably need to go, and just plain looks cool, leave it pretty much stock and you've found the right rig.

[VAJ4000]

Hey guys thanks for all of th information, it will be a great help. It is nice to be on a forum where people are actually respectful of each other.

[J4GRAND]

Welcome to the madness. Good to see another 73 J4000 possibly enter the fold.

The others have covered the basics of the J4000-J10/20 differences so I don't have anything to add just that I believe the 73 has the best of both worlds- the upgraded bed, instrument panel, and electrical system (first year with a seperate fuse box) of the later trucks and the ambience of the Kaiser-era rigs of the 60s.

[VAJ4000]

I stumbled accross the Vin Decoder in the Library and this is what I found out.

It is a 73 Toledo, Hydramatic-LHD 132" Wheelbase Townside-Pickup GVW 6000

Now it could have been changed, but that is what the VIN I will have more info on Sunday.

[rmorit01]

Post a picture when you get it.

I'm a 73 J4000 owner also -- Bob

[chrisnsarah]

primarily, the year does. there were plenty of other changes along the way too......

63-70 = j100/200/300
71-73 = j1000/2000/3000/4000
74-87 =j10/20


hope this is the info you were looking for.

I have to correct you on some of that info:

J100, 200, 300 = '62-early '65
J2000, 3000, 4000 = '65-'73

I don't think the 4000 label was until '70. I may be wrong.

[COLOFIREMAN]

I have a line on a 73 J4000 Custom Cab with that 5 lug D60... Are they desireable?? By who? CJ guys?

Several years ago I bought a 60-2 for my CJ project, before the one tons on it now. I cut down on the long side which made it 62" WMS and allowed me to use spacers on the front D44 from a Waggy to make the WMS. The axles were 1.5" but the bearings very big, very hard to find, and cost about $125.00, back in 97'. The best thing about those axles is how easy it is to convert to disc brakes. Find early chevy with the D44 front, take the caliper mount & caliper, buy a 90's model F150 TTB front rotor and presto you can bolt it all on.

The only reason I didn't use it was a good friend was preping to go to the Rubicon and needed my axle bad. We could find another so I sold it to him for a dually Dana 60 front that he had. It worked out in the end because I put a D70 in the back of my CJ which is full float and a bigger ring gear.:thumbsup:

Hey DT, if you can get it for cheap buy it and I can get it sold for you very easy!

[TealJ]

And i got a J4500 1/2 ton and my J4800 is a 1 ton :thumbsup:
Welcome to the club

[VAJ4000]

I took a couple of pictures, I have matching 33x12.50s for the front but it wouldn' t fit on the trailer with them on it.

www.twistedvisionz.com/Jeep.html

the last picture is really big if you have dail-up(sorry) I was in a hurry.
I left it big because I am confused which rear Dana it is? From everything I have seen online it is a dana 44 shape but is is stamped 30? Can anyone shed some light?

[Tonka J200]

Are you sure that doesn't say "60" - looks to me like it's a Dana 60-2.

That looks like a pretty clean truck - Nice find!

[Chris P.]

Nice truck! Looks like it has had an interior swap from a wagoneer.

I'm from Mt. Solon. Not too far from you.

[VAJ4000]

If you look at the last picture you can see the 30, Am I looking at the wrong stamp?

[Tonka J200]

I see what you're talking about, and I'm pretty sure it says "60" and not "30". Rust has a way of distorting things over time. :D I'm pretty rusty and distorted myself....

Here's a photo of the "60" on my J20 axle. The age of yours and the 5-bolt hubs would make it a Dana 60-2. http://i232.photobucket.com/albums/ee184/TonkaJ200/Dana60.jpg