Holley GM LS 2 Piece Cast Aluminum Satin Black Finish Valve Covers # HO241-172 Rate_15 Performer RPMs have larger plenums

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

Hooker swap headers add the extra horsepower and torque the serious enthusiast demands

ELECTRIC WATER PUMP OR MECHANICAL WATER PUMP WITH SHORT WATER PUMP PULLEYS

but will not fit 1987 and later cast iron heads

Gold iridited

Holley GM LS 2 Piece Cast Aluminum Satin Black Finish Valve Covers # HO241-172 Rate_15 Performer RPMs have larger plenumsHolley GM LS 2 Piece Cast Aluminum Satin Black Finish Valve Covers # HO241 172 Valve Covers, Aluminum LS, Centerbolt, Tall, Holley Logo, Cast Aluminum, Black Satin Finish, Baffled, Pair Valve Cover Mounting Style: Centerbolt Valve Cover Height: Tall Valve Cover Top Style: Holley logo Valve Cover Material: Cast aluminum Valve Cover Finish: Black satin Baffled: Yes Breathers Included: No Gaskets Included: No Grommets Included: No Mounting Hardware