World Products Merlin cylinder heads for big Chevys combine large intake runners with open combustion chambers to produce good torque and low-end power. The heads are available assembled or bare; rectangular or oval; with or without intake/exhaust valves; and other options. Order the model that best suits your application.

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Melling GM LS Beehive Valve Spring Kit, Max Lift: 0.625", Steel Retainer,  145LBS @ 1.800" Seat Pressure, 358LBS @ 1.175"Open, 1.100" Coil Bind, Kit

Melling GM LS Beehive Valve Spring Kit, Max Lift: 0.625", Steel Retainer, 145LBS @ 1.800" Seat Pressure, 358LBS @ 1.175"Open, 1.100" Coil Bind, Kit

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