1/2 inch. that's it!
.052 to .056 inch ( according to the owners manual )
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 )
.054 inch ( according to motorcraft.com , one of Fords websites )
SPARK PLUG GAP2004 Ford Truck E150 Super Duty Van 4.6L EFI 8cylThe Spark Plug Gap.054 (In thousandths of an inch)
For example : The spark plug gap for the 460 cubic inch / 7.5 liter V8 engine in a ( 1987 Ford F-250 is .044 inch )
.044 inch
According to one of Ford's websites : For a 1987 Ford LTD Crown Victoria : ( 5.0 liter / 302 cubic inch V8 engine , .050 inch spark plug gap ) ( 5.8 liter / 351 cubic inch V8 engine , .044 inch spark plug gap )
can a 1971 ford mustang rear differential interchange with a 1967 ford mustang? The only way that a differential from a 1971-73 mustang whether the 8.8 or 9 inch to fit a 1967 ford mustang, is to have it cut shorter a few inches each side and will need the shock supports repostioned on the axle to match the supports on the frame of the car
I was looking at one of the Ford websites and it shows : For a 1987 Ford F-150 , 4.9 liter / 300 cubic inch inline six cylinder engine : ( the spark plugs are gapped at .044 inch )
You can find an exploded view of the Ford 9" LSD Differential here.
According to one of Fords websites : For a 1987 Ford E-350 , 7.5 L / 460 cubic inch V8 engine : The spark plugs are gapped at ( .044 inch )