I put in AC Delco R44LTS6 spark plugs. They are correct for a '96 Silverado and have 17.25mm of thread reach.
I had AC Delco CR43TS plugs in it which were correct for TBI heads, but the thread reach on them is 10.95mm.
Not a world ending difference, but it does add an extra 2 cc of combustion chamber volume.
I had AC Delco CR43TS plugs in it which were correct for TBI heads, but the thread reach on them is 10.95mm.
Not a world ending difference, but it does add an extra 2 cc of combustion chamber volume.