Airflow Research 1011 SBC Enforcer Aluminum Cylinder Head 198cc 69cc Chamber Straight Plug

The Airflow Research 1011 is part of AFR's budget-friendly Enforcer series of as-cast cylinder heads, featuring the same high-quality components found in their premium CNC-ported heads including ARP rocker studs, Melling Racing springs, Viton valve seals, hardened spring cups, ductile iron seats, AFR adjustable guide plates, and stainless steel valves.

Key Specifications:

• 198cc intake runners with 69cc combustion chambers
• 2.050-inch intake valves and 1.600-inch exhaust valves
• 23-degree valve angle with straight spark plug configuration
• 1.580-inch valve springs suitable for hydraulic roller applications
• Ideal for 350 to 400 cubic inch engines operating below 6,000 RPM

Advanced Casting Technology:

These heads feature AFR's permanent mold as-cast technology surfaces on the intake runners, exhaust runners, and combustion chambers, allowing for extremely accurate and repeatable port location and performance. This makes them a perfect choice for anyone looking to upgrade to an aluminum head with modern port designs for their muscle car or street rod.

Important Notes:

• Sold individually; two heads required per engine
• Steam holes pre-drilled on these heads
• Compatible with any SBC block including 350 and 400
• Fully assembled and ready to install

Constructed from lightweight aluminum, the AFR 1011 provides a cost-effective performance upgrade over stock cast iron heads while delivering improved airflow, reduced weight, and better heat dissipation for your Small Block Chevy engine.