.035 or .040, depends on year.
The standard spark plug gap for the Dodge 360 from the 1970s was .0035. It was a common gap for most of the muscle engines of the day.
.040 is factory...
.035"
On a Dodge 360 engine, the number one spark plug is located on the driver's side of the engine, at the front. This engine is configured with a traditional V8 layout, so the cylinder numbering starts at the front on the driver's side and continues to the back, then continues on the passenger side. Therefore, the cylinder closest to the front left of the engine is designated as number one.
.035 inch
.040 inch
.035 inch.035 inch
( 8 ) spark plugs for your 360 cubic inch V8 engine
The firing order for a 1978 318 and 360 is: 1843657 with the distributor rotating clockwise. Timing should be set around 4 degrees btdc (before top dead center).
v8 318 360 FIRING ORDER 18436572
According to one of Fords websites : The 360 cubic inch / 5.9 liter , V8 engine in a 1975 Ford F-150 has a spark plug gap of : ( .044 inch )
#1 is drivers front firing order is 18436572 distributor location is clockwise