HOLLEY CHEV GM LS1 LS6 VALLEY COVER FINNED POLISHED # HO241-257 Cylinder Head Performer RPMs have larger plenums

Performer RPMs have larger plenums and runners to match the free-flowing exhaust

These kits make an oil pan change simple by having all the necessary components needed for the job included in the kit

Ventura Front Upper Positive Camber Design1974

Small Block Mopar 273

RFI Suppression

HOLLEY CHEV GM LS1 LS6 VALLEY COVER FINNED POLISHED # HO241-257 Cylinder Head Performer RPMs have larger plenumsHOLLEY CHEV GM LS1 LS6 VALLEY COVER FINNED POLISHED # HO241 257 Engine Valley Cover, LS, Cast Aluminum, Polished, Finned, Chevy, Each Valley Plate Material: Aluminum Valley Plate Finish: Polished Quantity: Sold individually. Notes: Finned cover for LS1 LS6 engines. Not for engines using knock sensors, displacement on demand or active fuel management. Holley LS Valley Covers Holley LS valley covers are the latest accessories offered for the GM LS