Designed to provide even greater increases than World Products' own Sportsman II heads, the Motown 220 cylinder heads rate as the ultimate small Chevy cast iron heads. Features include high-tech 64cc combustion chambers, 220cc intake runners capable of excellent flow and velocity, high-flow ports, and standard 2.055 in. diameter intake valves. They're ideal for large-displacement small blocks (383 or larger), and are available in bare or complete assemblies with valves, retainers, screw-in studs, guideplates, and your choice of 1.440 in. or 1.550 in. valve springs.

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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

$400.00