* Year of the vehicle: The 318 engine was used over many years, and vehicle designs, and thus towing capabilities, changed significantly.
* Vehicle model: A pickup truck with a 318 will tow far more than a car with the same engine. Think Ram trucks vs. a Dodge Dart.
* Transmission: Automatic or manual transmissions have different capacities.
* Axle ratio: Higher ratios allow for greater towing capacity.
* GVWR (Gross Vehicle Weight Rating): This is the maximum weight of the vehicle, including passengers, cargo, and towed load.
* GCWR (Gross Combined Weight Rating): This is the maximum weight of the vehicle *plus* the weight of the trailer. This is the most important figure for towing.
To find the towing capacity of a *specific* Dodge vehicle with a 318 engine, you must know the year, model, and consult the owner's manual or a reliable source like the vehicle's specifications from the manufacturer's website (if available for that year and model).
