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To adjust the valves on a 1979 454 engine, first ensure the engine is cold. Remove the valve covers, then rotate the engine to bring cylinder number one to top dead center (TDC) on the compression stroke. Adjust the valves by loosening the adjusting nut on each rocker arm, then tighten until you feel resistance and back off 1/4 to 1/2 turn. Repeat for each cylinder, following the firing order, and finally reattach the valve covers.

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AnswerBot

2w ago

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