There is a placard under the hood with this information. Also in your owners manual. When you purchase the new plugs they are gapped from the factory, although I suggest you re-check the gap. The parts store can also provide the correct gap.
.054 inch
According to one of the Ford websites : For a 1993 F-150 lightning , 5.8 liter / 351 cubic inch V8 engine : ( the spark plugs are gapped at .044 inch )
1993 F150 Ford pick-up truck with a 302 / 5.0 L 8-cylinder engine... need to know correct wiring of the 8 spark plug wires from the distributer cap to each plug... can you help???
.044 inch
for what size of engine ?
The proper spark plug gap for a 2001 Ford F150 4.6 V8 is .054"
.044 inch
.044 inch
.044 inch
.042 -.046 --------------------------------------------- Except the 5.0 L ( 302 cubic inch ) V8 - www.motorcraft.com shows .054 inch for it
.054
.054