AFR 224cc Gen 3 6.2L/6.4L Hemi - Full CNC - 73cc Chamber Passenger Side

AFR 224cc Gen 3 6.2L/6.4L Hemi - Full CNC - 73cc Chamber Passenger Side

For all-out Gen III Hemi performance, AFR's 224cc Black Hawk cylinder heads leave no expenses spared for your 5.7/6.1L or 6.2/6.4L engines. Manufactured from A356 aluminum using permanent-mold technology, AFR's 224cc Black Hawk Gen III Hemi Aluminum Cylinder Heads feature 100% CNC-ported intake ports, exhaust ports, and combustion chambers. These heads come equipped with AFR's trademarked .750” thick head deck, designed to withstand the boost and power demands of modern OEM and aftermarket engines. The improved water jacketing enhances cooling while maintaining a minimum of .200” port-to-water jacket thickness.

An optional machining upgrade allows for the addition of bolt hole and dowel provisioning for Hellcat superchargers. Engineered for use with hydraulic roller camshafts up to .650” lift, these heads are available in multiple configurations to meet your specific needs.

Included Components

• 100% CNC Intake Ports
• 100% CNC Exhaust Ports
• 100% CNC Combustion Chambers
• Competition 5-Angle Valve Job

Valve & Spring Specifications

• Intake Valve: 8mm Bead Lock 2.165” x 5.135” O.A.L. (AFR #7269)
• Exhaust Valve: 8mm Bead Lock 1.650” x 5.150” O.A.L. (AFR #7271)
• Valve Springs: PAC Racing 1.270” OD Hydraulic Roller Dual Valve Drag Race Spring, 155 lbs. on seat, .650” max lift, 7000-7200 Max RPM (AFR #8019)
• Retainers: 10° Titanium, 1.245” O.D x .885” I.D x .655” I.D (AFR #8520)
• Valve Keepers: 10° 8mm with lash cap recess (AFR #9009)
• Valve Spring Cups: Hardened 1.380" O.D x 1.300" I.D x .570" I.D (AFR #8042)
• Valve Seats:
  • Intake: 2.200" O.D x 1.750" I.D x .375" Deep (AFR #9060)
  • Exhaust: 1.696" O.D x 1.35" I.D x .375" Deep (AFR #9073)
• Valve Guides: Intake & Exhaust Bronze 8mm x 2.100" O.A.L (AFR #9051)

224cc Gen III Hemi CNC Flow Chart

Test conducted at 28" of water (pressure) on Superflow 1020 - Bore Size: 4.060"

Specifications & Features

• Material: A356 Aluminum
• Intake Port Volume: 224cc
• Exhaust Port Volume: 64cc
• Combustion Chamber Size: 69cc
• Deck Thickness: .750"
• Minimum Bore Diameter: 3.197"
• Spark Plug Dimensions: 14mm x 1"

Important Notice

These products are illegal to operate on any public highway and are only legal if used on a dedicated racing vehicle. Violations may result in penalties, revocation of registration, and loss of use on public roads.