CNC215 Ported SB Chevy Cylinder Heads, Assembled, .700 lift Solid Roller ( 2 heads)

CNC Motorsports high flowing CNC Ported cylinder heads are made out of high quality AC4B aluminum alloy and feature a street performance 3-angle valve job, bronze valve guides and ductile iron valve seats. This is an excellent out of the box performance cylinder head that doesn't break the bank.

• 215cc Intake ports (CNC Ported)
• 2.020 Intake Valves - Manley/Ferrea Valves
• 1.600 Exhaust Valves - Manley/Ferrea Valves
• 66cc Combustion chambers (CNC Ported)
• Angle Plug
• PAC 1941 Valve Springs, Good for .700 lift solid roller camshaft
• 7/16 ARP Rocker Studs
• 5/16 Guide plates
• Assembled in-house at CNC-Motorsports
• Sold as a Pair (2 Heads)
• Material: Aluminum
• Intake Port Location: Stock
• Intake Port Shape: Rectangle(Stock) Use Felpro 1206 or 1206S-3
• Exhaust Port Location: Stock / (CNC Ported)
• Exhaust Port Shape: Square - Fel-Pro 1405
• Valve Cover Bolt Pattern: Perimeter & Center
• Recommended Head Gasket: Fel-Pro 1003
• Recommended Head Bolts: ARP 134-3601
• Spark Plug Dimensions: 14mm x 3/4" w/ Flat Seat - NGK5671A-8
• Valve Angle: 23°

Stock Intake Flow

• .100 - 69 cfm / CNC Ported 70 cfm
• .200 - 144 cfm / CNC Ported 144 cfm
• .300 - 201 cfm / CNC Ported 203 cfm
• .400 - 239 cfm / CNC Ported 248 cfm
• .500 - 254 cfm / CNC Ported 271 cfm
• .600 - 260 cfm / CNC Ported 286 cfm

Stock Exhaust Flow - No Pipe

• .100 - 50cfm / CNC Ported 55 cfm
• .200 - 96 cfm / CNC Ported 100 cfm
• .300 - 33cfm / CNC Ported 140 cfm
• .400 - 162 cfm / CNC Ported 171 cfm
• .500 - 177 cfm / CNC Ported 195 cfm
• .600 - 190 cfm / CNC Ported 209 cfm