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Fitting - Adapter - Straight - Single Tab - Valve Cover to 12 AN Male - Aluminum - Clear Anodized - GM LS-Series Valve Cover - Each.LS Classics - 409 Chevy Valve Covers.
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Ultra-light weight titanium intake valve and a hollow sodium filled exhaust valve.Key Features: Fitting - Adapter - Straight - Single Tab - Valve Cover to 12 AN Male - Aluminum - Clear Anodized - GM LS-Series Valve Cover - Each. 1.8:1 rocker arm ratio vs the 1.7:1 ratio found on its LS counterparts. Ls valve covers with an fittingsHigher intake runner (LS7) which improves the airflow path while at the same time requiring a longer valve and greater unsupported stem area between the valve head and the bottom of the guide.