Airflow Research 1065 220cc Eliminator Race Aluminum Cylinder Heads Small Block Chevy

The Airflow Research 1065 Eliminator Race cylinder heads are high-performance aluminum cylinder heads designed for serious small block Chevy race applications and aggressive street builds. These race-ready heads feature 100% CNC-ported intake runners, exhaust ports, and combustion chambers for maximum airflow and power potential.

Key Specifications:

• 220cc intake runner volume with 2.220" H x 1.310" W port dimensions
• 65cc combustion chambers for optimal compression ratio
• 80cc exhaust port volume with raised port configuration (.250" over stock L98)
• Lightweight 8mm valves: 2.100" intake and 1.600" exhaust
• Cast from premium A356 aluminum with 3/4" thick deck (ideal for nitrous or blower applications)
• 23-degree valve angle with angled spark plug configuration
• Hardened ductile iron interlocking valve seats with 5-angle valve job
• 1.550" OD solid roller dual valve springs (225 lbs seat pressure, .710" max lift)
• Perimeter bolt valve cover mounting pattern
• Bronze valve guides with stem seals included

Features and Benefits:

• Race-ready CNC porting delivers exceptional flow characteristics straight out of the box
• Standard GM L98 valve and stud locations—no special parts required
• Compatible with solid roller camshafts up to .710" lift
• Ideal for 350-427 cubic inch engines operating between 4,000-8,000 RPM
• Perfect for bracket drag racing, sportsman oval track, and radical Pro Street applications
• Fully assembled and ready to install

Important Notes: Sold as a pair. The 2.100" intake valves will require aftermarket pistons notched for valve clearance. Raised exhaust ports require appropriate headers. These heads are based on L98 geometry and are not compatible with self-aligning rocker arms. For racing use only—not legal for street use in emissions-controlled areas.