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You are basically going to just have to hunt around. We do have a vehicle sales area that you can look in.
Out of curiosity, why does it need to be that specific model? There were a lot of J-Trucks sold over the decades, and that model was only for a handful of years.
In case maybe you don't know, for pre-J10/J20 years, the first number is wheel base. (2 is SWB, and 4 is LWB). The second number is the GVWR (6, 7, or 8 thousand pounds).
JMO - that's unrealistic for either of those trucks. The newest J4800 is from 1973, nearly 50 years old. You need to do more homework before you search for a J-truck.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
As far as I know, the J20 had a variety of GVW offered, including 7600# and 8400#. I would go as new as I could afford. J20 was available 74-87. There are a few 88s out there but I think they are leftover from 87.
fulsizjeep wrote: ↑Fri May 28, 2021 10:02 am
As far as I know, the J20 had a variety of GVW offered, including 7600# and 8400#. I would go as new as I could afford. J20 was available 74-87. There are a few 88s out there but I think they are leftover from 87.
I recall looking at those specs, wondering what about my J20 puts it in the 7600# class. The base J20 in '82 has a 6800# rating, 600# more than the J10 and wagons. Add another 800# to 7600# and another 800# to 8400#. I believe the only difference is in the springs, to support a larger load in the bed. From a towing perspective, I think this only matters wrt the tongue weight of the trailer. With an equalizing hitch, you could tow with a J10 if the drive train would survive. Pulling that much weight, you'd be better off with the J20's D60 axle.
I would point out to the OP that only the J4800 came with the full-floating Dana 60 rear axle in that era. The J4700 used the 60-2 which has a single rear wheel bearing like the Dana 44. These trucks were all drum brake equipped, and replacement drums for the 60-2 don't exist any more. Old.
Even the newest of these trucks are well over 30 years old, and I don't recall seeing a towing rating for any of them. If the objective were entirely towing that 8000# trailer, I believe the OP would be much better off with a one-or-two-decade-old Ford or Chevy or Dodge/Ram that was delivered with a towing rating that meets that need.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
I agree with what was said before, a 8000 lbs trailer with a 50 years old truck is not very safe, but Jeep published a few brochures about towing , and according to these brochures for 73-74 , the J4800 or the J20 with the 8000lbs GVW option with what they called class IV equipments had a maximum loaded trailer weight of 10,000 lbs, so it was not absurd back in the days.
Class IV requirements in addition to the heavy duty options included in the 8000lbs option were :
- equalizing hitch, automatic with quadra-trac, power steering, axle ratio 4,09 for the J20 with the 8000lbs GVW option (power brakes were included)
- equalizing hitch, automatic, power brakes and power steering for the J4800
A 73 J4700 with an equalizing hitch, a 360 , an automatic and all the heavy duty options available was rated up to 8000lbs for towing
A 74 J20 with the class IV requirements but without the 8000lbs option was rated up to 7000 lbs for towing
The early jtrucks were rated at 5000 lbs for towing