When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It depends somewhat on what you're towing. If the trailer does not have brakes then keep the gross weight to 3500 lbs. If the trailer has brakes then 5000 lbs is fine providing the hitch is a class II with a 2 inch ball.
Over 5000 lbs you will find then the van will be underpowered and will have to work hard to pull that kind of load. I have a 1988 with the 5.8L and the PO used it to tow an enclosed trailer of unknown weight. He had to rebuild the engine at 80,000 miles.
Also the kind of trans is key. I have the C6 which is almost unbreakable. What you have may be different. If it has overdrive then your trans is not a C6 and not as strong.
With proper modifications to the drivetrain I think someone could set up a van like yours to tow up to 8000 lbs but the cost may make it uneconomical.
Thanks for the info, I do have overdrive so that gives my a pretty good idea, I just had new U joints put in, not sure what other mods are possible to the drive train, but I doubt it will be worth it for me anyway. its a good solid vehicle, but to do what I want I will probably wind up buying a truck.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.