Check the Vehicle Emission Control Information ( VECI ) decal located in the
front of your engine compartment ( it will show the type of spark plugs to use
and the spark plug gap )
6.0 gallons
( .044 inch ) for the 5.8 L / 351 cubic inch V8 engine in a 1997 Ford F-250 , according to motorcraft.com
In a 1997 Ford F-250 *** LIGHT DUTY *** (YES , the 4.2 liter V6 engine was available )
On your 1997 Ford F-250 Heavy Duty , 351 cubic inch V8 engine ( 5.8 liter ) Check the Vehicle Emissions Control Information ( VECI ) decal located in the front of your engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
7.5
28 foot pounds
It should be the 6.8 liter engine and the capacity is 6 quarts
7.3 Liter Turbo
Start by changing the spark plugs
In a 2004 Ford F-250 : Gasoline engine choices ( 5.4 liter V8 and 6.8 liter V10 ) Diesel engine ( I believe that is 6.0 liter )
I did a Google search of the 1997 Ford F-250 and a couple of websites show ( 245 horsepower ) for the 7.5 liter / 460 cubic inch gasoline engine but they don't show what the torque is
1994-2003