How should you index spark plugs with dished pistons? I had the center electrode facing the combustion chamber with flat top pistons. The ground strap was down toward the piston. I read this info from a mustang book with the idea that the spark is fully open to the combustion chamber mix. Now I have -13cc dished pistons how should they face? Whould the same theroy apply?
indexing spark plugs with dished piston?
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