According to one of Ford's websites :
For a 1988 LTD Crown Victoria , 5.0 liter / 302 cubic inch V8 engine :
( .050 inch spark plug gap )
0.52-0.56
.052-.055
The spark plug gap will be shown on the Vehicle Emission Control Information ( VECI ) decal in the engine compartment
On a 1996 Ford Crown Victoria : Check the Vehicle Emission Control Information ( VECI ) decal in the front of your engine compartment . That will indicate what type of Motorcraft spark plug to use and the spark plug gap
.050
According to one of Ford's websites : For a 1991 LTD Crown Victoria , 5.0 liter / 302 cubic inch V8 : ( .050 inch spark plug gap )
.052-.055
.054 inch , according to fordparts.com
What year of Ford Crown Victoria and what is the engine size A little more information please
For a 1991 LTD Ford Crown Victoria : According to one of Fords websites : For the 5.0 liter / 302 cubic inch V8 engine ( .050 inch spark plug gap ) For the 5.8 liter / 351 cubic inch V8 engine ( .044 inch spark plug gap )
.054 inch
According to my Chilton's Auto Repair Manual : For a 1987 Ford Crown Victoria : ( .044 inch spark plug gap ) for the 5.0 / 302 and the 5.8 / 351