DART DA13311182 Ford SB Iron Eagle Cylinder Heads 180cc Intake 62cc Chamber 1.437" Dual Springs (each)

Dart's Iron Eagle heads for small block Fords are a true bolt on performance upgrade for the highly popular 289/302/351 family of engines. Made from premium cast iron and precision machined on our digital CNC machining centers, these heads are ready to go right out of the box. Intake runners are increased from stock size and feature streamlined valve guide bosses for improved air flow. The combustion chambers have been reshaped to improve combustion efficiency for increased power.

Features:

• Premium cast iron for superior strength and integrity.
• Bolt on compatibility: Standard valve angle and standard spacing accommodates all stock accessories.
• 185cc intake ports provide a serious upgrade for stock units.
• Heart shaped chambers improve combustion efficiency.
• Multi-angle intake seats and radiused exhaust seats improve flow efficiency.
• Hardened exhaust seats are compatible with unleaded gasoline.
• Exhaust flange uses the standard bolt pattern.
• Manganese bronze valve guides ensure long term reliability.

• Combustion Chamber Volume (cc):62
• Intake Runner Volume (cc):180cc
• Exhaust Runner Volume (cc):73cc
• Cylinder Head Style:Assembled
• Cylinder Head Material:Cast iron
• Intake Port Shape:Rectangular
• Intake Valve Diameter (in):1.940 in.
• Cylinder Head Finish:Natural
• CNC-Machined Combustion Chamber:No
• CNC-Machined Intake Runner:No
• CNC-Machined Exhaust Runner:No
• Intake Port Location:Standard
• Exhaust Port Location:Standard
• Intake Valves Included:Yes
• Exhaust Valves Included:Yes
• Exhaust Valve Diameter (in):1.600 in.
• Valve Springs Included:Yes
• Maximum Valve Lift (in):0.620 in.
• Outside Diameter of Outer Spring (in):1.437 in.
• Damper Spring Included:No
• Number of Springs Per Valve:Dual
• Retainers Included:Yes
• Retainer Material:Chromoly steel
• Locks Included:Yes
• Lock Style:10 degree
• Valve Stem Seals Included:Yes
• Rocker Arm Studs Included:Yes
• Rocker Arm Nut Thread Size:3/8-24 in.
• Rocker Arms Included:No
• Rocker Arm Nuts Included:No
• Guideplates Included:Yes
• Guideplate Pushrod Size:5/16 in.
• Valve Cover Mounting Style:Perimeter bolt
• Accessory Bolt Holes Drilled:Yes
• Intake Valve Angle:20
• Exhaust Valve Angle:20
• Valve Guides Included:Yes
• Valve Guide Material:Manganese bronze
• Valve Seats Machined:Yes
• Valve Seat Machine Style:5-angle intake/3-angle exhaust
• Valve Seat Material:Ductile iron
• Steam Holes Drilled:No
• Oiling Style:Through pushrod
• Machined for O-Ring:No
• Heat Crossover:No
• Quantity:Sold individually.