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There is no adjustment. If you have the type of rocker arms with lock nuts, the best way is while engine is running tighten to 0 lash (rocker is no longer making a tapping noise) than go an additional 1/2 turn. If you have regular nuts there is no adj. torque nuts to 25 ft. lbs

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11y ago
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Q: How do you adjust rocker arm for 2000 Chevy blazer 4.3?
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