Old-Biscuit wrote:
It's a heavy CAR (4600#) with a bed and a small rear end. Plus you have tall gearing.
It's a steel unibody design with a people-and-paylod capacity of 1250#
Towing ......up to 6000# with 500# tongue using Class III hitch
Ranchero 'The Personal Pickup'.........LINK
I don't think it's a unibody - it says in the brochure and from other sources that I read that it's a body on frame design.
The payload seems to be 1250 on the brochure. Interesting that it had the coil over rear springs. Shouldn't be a problem with a 5-7k lb trailer IMO considering 500-700lb of tongue weight which would leave 550lbs (estimate) for 2 passengers and a little gear.
I would still consider a tranny cooler if you're going to be towning with it though.
Also being that the vehicle is 40 years old I would really look at how the receiver is attached to the vehicle. You mentioned class 3 and while I personally think you're at the limit of a 3 hitch with that 28ft trailer I would at least make sure that the weld points are solid. Sure would be a crappy day if you get everything done and halfway through your trip the receiver falls off because of rust or something!
Best of luck to you!