* Engine size: (e.g., 302 cubic inch V8, 351 cubic inch V8, etc.)
* Transmission type: (e.g., manual, automatic)
* Axle ratio: (e.g., 3.55, 4.10)
* Truck configuration: (Regular cab, Supercab, long bed, short bed, etc.) These impacted payload and therefore towing capacity.
You'll likely find this information on the door jamb sticker or the owner's manual. If you don't have the owner's manual, you might find a similar truck's specifications online and cross-reference the details to see if they match. However, it's best to confirm using the vehicle's original documentation. Without that information, giving you a specific towing capacity is impossible.