Originally Posted by happyhourhero56
got new plugs at autozone figured it was about time, they told me the gap was for .054, i thought that with the timing bump you stretched them out to .054, if thats stock what should they be stretched to?
Depends on the yr & engine. This is very confusing, and I've never got a straight answer about it.
At a certain year, even though All other component part #'s remain exactly the same. Coil, distributor, even spark plug, the gap size changes from .044 to .054.
I've asked a lot of people, parts store & dealer counter persons, posted it on 4 different Ford Forums, even asked Ford mechanics. Nada! Plug manufacturers don't agree either!
The best reference is the permanent sticker under your hood. If your's is gone, find someone w/ same year & engine that still has their permanent stick attached. Without that, go w/ MOTORCRAFT references. on 302's I think the gap switch comes at 90'. Check for differences between copper cores & double Plats too!