.050 inch , according to fordparts.com
( .050 inch ) - spark plug gap for 1986 Ford Mustang - 5.0 liter engine
The 1986 Ford Mustang 3.8 liter engine was rated at 120-horsepower
( .044 inch ) for the 2.9 liter V6 engine in a 1986 Ford Ranger
www . motorcraft . com ( no spaces ) shows : .054 inch spark plug gap for a 1986 Ford Thunderbird 3.8 liter V6 engine
The 5.0 liter V8 engine in a 1986 Ford Mustang GT was rated at : ( 200 horsepower from the factory )
If it's the same as a 1987 - 210 horsepower
According to one of Fords websites : For a 1986 Ford Taurus : ( both the 2.5 liter four cylinder engine and the 3.0 liter six cylinder engine have the spark plugs gapped at .044 inch )
According to one of Fords websites : For a 1986 Ford Mustang , 5.0 L / 302 cubic inch V8 engine : The spark plugs are gapped at ( .050 inch )
.050 inch spark plug gap - 1986 Ford Mustang 5.0 L ( 302 )
According to one of Ford's websites : For the 5.0 liter / 302 cubic inch V8 engine in a 1986 Lincoln Town Car : ( the spark plugs are gapped at .050 inch )
On the engine end of the upper radiator hose
Ford calls their 302 cubic inch a 5.0 liter