If your truck *does* have points:
You need to consult your owner's manual or a reputable repair manual specific to your 1982 Dodge truck with the 318 engine. The point gap specification will be listed there. The gap is typically measured in inches or millimeters. A common range for points is between 0.035" and 0.045" (0.89mm and 1.14mm), but this is *not guaranteed* to be correct for your specific vehicle.
If your truck has electronic ignition (most likely):
Then it doesn't use points at all. Electronic ignition systems don't require point gap adjustments.
To find the correct point gap (if applicable):
1. Locate your owner's manual: This is the best source for your vehicle's specific specifications.
2. Find a repair manual: A Haynes or Chilton repair manual for your specific year, make, and model will provide detailed specifications and procedures.
3. Check the distributor: Some distributors have the point gap specification stamped on them. This is less common but possible.
Important Note: If you are unsure about working on your ignition system, it's best to take your vehicle to a qualified mechanic. Incorrect point gap can damage your ignition system and cause engine misfires or failure to start.