plug gap, increase or reduce?

MoparLeo said

We are talking about .060-.080 gaps. also not in the 70's... No body said when HEI it made its debut. HEI with precious metal electrodes, reread it. Gaps got wider when the precious metal electrodes came out.

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Buick had some plug gap specs at .080 in the 1970s. Cadillac also used a .120 gap for a short time also in the 1970s.