www.motorcraft.com shows the spark plug gap for a 351 ( 5.8 L ) in a 1993 F-150 as .044 inch
.044 inch
.044 inch
.044 inch
The 1976 351 Ford engine spark plug gap is .034. Most spark plugs will come pre-gapped from the spark plug manufacturer.
( .044 inch ) 351 Windsor and 351 Modified for 1978 Ford truck
.044 inch
0.044
.035 inch
.044 inch for 351 M and 351 W
www . motorcraft . com ( no spaces ) shows : The spark plug gap for a 1994 F-150 - 351 V8 ( 5.8 L ) as .044 inch
.044 inch