SBC 220cc CNC Alum Heads Eliminator Race 75cc A/P

The SBC 220cc CNC Alum Heads Eliminator Race 75cc A/P from Air Flow Research represents the pinnacle of small-block Chevy cylinder head engineering for serious engine builders and racers. These fully assembled aluminum heads are purpose-built for high-rpm competition where every increment of flow efficiency translates directly to horsepower and torque gains. Whether you're constructing a street performance engine or preparing a dedicated race motor, these heads deliver the precision-machined construction and optimized combustion chamber design that separates championship-level builds from the rest.

Built with CNC-precision aluminum construction, the Eliminator Race heads feature 220 cubic centimeter intake runners paired with a compact 75cc combustion chamber that promotes efficient fuel mixture burn and superior quench characteristics. The 2.100-inch intake valves and 1.600-inch exhaust valves maximize flow potential while maintaining structural integrity under boost or nitrous oxide applications. The 1.550-inch valve springs provide dependable control of valve float at extreme engine speeds, while the angle-plug configuration ensures optimal spark plug positioning for consistent ignition timing and minimal quench band interference, critical factors in maximizing combustion efficiency and preventing detonation in high-compression small-block builds.

This pair of cylinder heads is ideal for builders targeting 400+ horsepower naturally aspirated engines or forced-induction platforms requiring reliable, high-flow architecture. The pre-assembled configuration eliminates guesswork in valve train setup and reduces build time without sacrificing quality control. Installation requires compatible small-block Chevy engine blocks and intake manifold systems; verify valve cover clearance and header fitment with your specific platform before final assembly. Weighing 70 lbs per pair, these heads integrate seamlessly into modern crate engine programs and restoration projects alike.