.034"
According to one of the Ford websites : For a 1986 Ford E-150 : Both the 5.0 / 302 cubic inch and the 5.8 / 351 cubic inch V8 engines have the spark plugs gapped at ( .044 inch )
250 cubic inch - straight 6 cylinder - ( .050 inch ) 302 cubic inch - V8 - ( .050 inch / .060 inch in California )
On a 1967 Ford Mustang : * If you have the 200 cubic inch inline six cylinder engine : The spark plugs are gapped at ( .032 to .036 inch )
On a 1965 Ford Mustang , the spark plug gap for the 200 cubic inch straight 6 cylinder engine is .032 - .036 inch
( .044 inch ) - for the 4.9 L ( 300 cubic inch ) straight 6 cylinder engine in a 1989 Ford truck
2.3 liter ( 140 cubic inch ) SOHC 4 cylinder
On a 1966 Ford Mustang : 200 cubic inch inline six cylinder engine : The spark plugs are gapped at ( .032 to .036 inch )
( .044 inch ) spark plug gap for your 1984 ( 300 cubic inch ) 4.9 L straight 6 cylinder Ford engine
.035 inch - light duty .030 inch - medium duty for the 1970 Ford - 300 cubic inch - straight 6 cylinder according to motorcraft.com
According to one of the Ford websites , for a 1989 Ford Festiva , 1.3 liter / 81 cubic inch four cylinder engine : ( the spark plug gap is .044 inch )
For the Ford Mustang , 200 cubic inch inline six cylinder engine : ( .032 to .036 inch spark plug gap ) ( in the 1960's )
.035 inch ( for the 302 / 360 / 390 cubic inch V8 engines )