Dart Small Block Chevy 15 Degree Aluminum Cylinder Heads

The Dart Machine 15 Degree Small Block Chevy Cylinder Heads offer a dramatic performance improvement over conventional 23 Degree designs.The Dart engineering staff reduced the valve angle, reshaped the intake ports and optimized the combustion chambers to produce a significant increase in both airflow and combustion efficiency!Features:

• Aluminum Alloy: C355-T61
• Intake Port Volume: 284cc
• Chamber Volume: 48cc
• Angle Plug Design
• Intake Valve Size: 2.150 or 2.180
• Exhaust Valve Size: 1.600 or 1.625
• Recommended Intake Manifold: 301-42711000
• Sold Individually (Bare or Assembled)