Where number one cylinder on the distributor cap of a Dodge 318 engine?

On a Dodge 318 engine, the number one cylinder location on the distributor cap is usually marked directly on the cap itself. However, the exact position can vary slightly depending on the year of manufacture and other minor details. Look closely at the distributor cap for a "1" marking.

If the marking is missing or unclear, you will need to determine the firing order of the engine (it's usually stamped on a tag in the engine bay) and consult a diagram specific to your engine's year. The firing order will tell you which cylinder fires first, and therefore where #1 should be on the cap.