Using the 1972 Ford Thunderbird as an example :
The 460 cubic inch / 7.5 liter V8 engine :
( has spark plugs gapped at .035 inch )
.044
( .044 inch spark plug gap ) for the 7.5 liter / 460 cubic inch V8 engine in a 1993 Ford F-350
for a 1979 Ford F-150 ( 7.5 liter / 460 cubic inch V8 ) the spark plug gap is ( .044 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 ( for the 460 in a 1988 Ford truck , according to www . motorcraft . com - no spaces )
.044 inch ( according to fordparts.com )
.044 inch , according to motorcraft.com
I currently have a 1972 Ford F250 with a 460 in it.
Spark plug wires incorrectly connected or it is way out of time.
The gap for the 460 is .042-.046, I had a 1991 should be the same 99.9% sure.
( .044 inch ) for the 460 cubic inch / 7.5 liter V8 engine in a 1996 Ford F-250 according to fordparts.com
According to one of Fords websites : For a 1983 Ford F-250 , 7.5 liter / 460 cubic inch V8 engine : The spark plugs are gapped at ( .044 inch )