Chevrolet Performance 19417888 Features:

• Made of A356 aluminum with low-pressure casting and Hot Isostatic Pressing for enhanced strength and material density
• CNC-machined intake and exhaust ports
• CNC-machined combustion chambers
• Includes valve seats and valve guides installed
• Valve seats and guides designed to accommodate 2.20" (intake) and 1.6". (exhaust) valves
• Assembled head includes 2.20"""" intake and 1.61"""" valves and beehive-type valve springs (including retainers and keepers) installed ""

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Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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