The correct spark plug gap for most v6 and v8 dakotas of this era is 0.040 inches, but always check the emissions sticker under your hood for the exact specification for your vehicle.
For even greater performance consider upgrading to a ngk iridium ix spark plug
Confirm the engine code before buying plugs or setting the gap
Spark plug gap chart by vehicle with exact specs, torque values, and plug types for 80+ makes and models
Quick reference for spark plug gaps, types, and part numbers by vehicle
Always verify with your owner's manual or the underhood emissions label for your specific year and engine.
Ngk doesn't recommend adjusting the plug gap more than.008 in either direction
Beyond that slight adjustment, the ground electrode and center electrode won't align properly, hindering spark plug.