* Engine: Different engines had different weights, impacting the payload capacity.
* Cab style: Regular cab trucks generally had higher payload capacities than extended cabs.
* Drivetrain: 2WD trucks typically had a higher payload than 4WD trucks due to the added weight of the 4WD system.
* Options: Added options like air conditioning, power windows, etc., all reduced the payload.
To find the *exact* payload capacity for a specific 1985 Chevy S10, you need to look at the vehicle's sticker (usually located on the driver's side doorjamb). This sticker will list the GVWR (Gross Vehicle Weight Rating) and the payload. The payload is calculated by subtracting the truck's curb weight (weight of the vehicle as it sits, fully equipped, with no cargo or passengers) from the GVWR.
