* Axle Ratio: Different axle ratios (e.g., 3.08, 3.42, 3.73, 4.10) dramatically affected towing capacity. Higher numerical ratios meant more towing power but less fuel efficiency.
* Transmission: The type of transmission (manual vs. automatic) and its gear ratios also impacted towing capability.
* Options: Features like power steering, air conditioning, and heavier-duty suspension packages influenced the truck's overall capacity.
* GVWR (Gross Vehicle Weight Rating): This is the maximum weight of the truck itself plus its load. The towing capacity is directly related to the GVWR.
* GCWR (Gross Combined Weight Rating): This is the maximum weight of the truck *plus* the trailer it's towing. This is the most important figure for safe towing.
To find the specific towing capacity for *your* 1979 Chevrolet C20 Camper Special, you need to check the following:
1. The original owner's manual: This is the best source. It will list the specifications for your specific truck configuration.
2. The sticker on the driver's side doorjamb: This sticker often contains the GVWR.
3. The build sheet (if available): This document details all the options and specifications of your truck.
4. A Chevrolet parts or service department: They may be able to look up the information based on your VIN.
Without knowing the specific options and axle ratio of your particular truck, any number given here would be a guess and potentially unsafe. Do not rely on an estimate; always determine the correct capacity from the sources listed above. Overloading a vehicle can lead to serious accidents and damage.
