Dart Iron Eagle Marine Cylinder Heads Big Block Chevy - Assembled

Dart Iron Eagle Marine Cylinder Heads Big Block Chevy, Assembled (Pair)

Dart designed theIron Eagle big block heads for high performance marine applications. Theydeveloped two rectangular ports: a high velocity 308cc intake runner thatproduces incredible torque and a 345cc version that’s perfect for big-inch, highRPM Rat motors. The Iron Eagle’s raised exhaust port out performs its cast-ironcompetition but still fits most standard headers.

Features:

• Heart-shaped 119cc chambers improve efficiency.
• Multi-angle intake seats, radiused exhaust seats, and precision cast valve bowls produce excellent airflow.
• Hardened exhaust seats for use with unleaded gasoline.
• Exhaust ports raised .300" to improve flow (requires 1" longer head bolts next to exhaust ports).

An optional anti-corrosive protectant is available that consists of afluorinated polymer with a Teflon base.  It's blue in color applied only tothe water jackets.