.20 thousand on a feeler gauge
www.motorcraft.com shows the spark plug gap for a 351 ( 5.8 L ) in a 1993 F-150 as .044 inch
According to my Chilton's Auto Repair Manual : The 351 Cleveland engine has single points and the 351 CJ engine has dual points in 1973
The 1976 351 Ford engine spark plug gap is .034. Most spark plugs will come pre-gapped from the spark plug manufacturer.
The gap on the 351 Cleveland changes timing. Adjust the point gap until it is at 28-32 and begin timing then.
Optimum plug gap for Club Car gasoline engine is .28". Go no wider than .30".
That year engine does not have POINTS.
i have read at another site that it is around .044
( .044 inch ) according to fordparts.com
.035 spark .020 points
points gap 17
What engine and what year?
18