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Dart has taken their original 14° Big chief head and revised it using Oval Port technology. Using high flow 433cc runners that flow over 495cfm at .900 lift, these heads are the perfect choice for 550+ cubic inch naturally aspirated engines. Custom pistons are required.

Cylinder Head Style: Bare

Cylinder Head Material: Aluminum

Cylinder Head Finish: Natural

Combustion Chamber Volume (cc): 82

CNC-Machined Combustion Chamber: Yes

Intake Runner Volume (cc): 440cc

Exhaust Runner Volume (cc): 185cc

CNC-Machined Intake Runner: Yes

CNC-Machined Exhaust Runner: Yes

Combustion Chamber Style: Heart

Intake Port Shape: Oval

Intake Port Location: Spread

Exhaust Port Shape: Round

Exhaust Port Location: Raised

Intake Valves Included: No

Intake Valve Diameter (in): 2.470 in.

Exhaust Valves Included: No

Exhaust Valve Diameter (in): 1.800 in.

Valve Springs Included: No

Damper Spring Included: No

Retainers Included: No

Locks Included: No

Valve Stem Seals Included: No

Rocker Arm Studs Included: No

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: No

Valve Cover Mounting Style: Perimeter bolt

Accessory Bolt Holes Drilled: Yes

Intake Valve Angle: 14

Exhaust Valve Angle: 14

Valve Guides Included: Yes

Valve Guide Material: Manganese bronze

Valve Seats Machined: Yes

Valve Seat Machine Style: 4-angle intake/3-angle exhaust

Valve Seat Material: Copper-beryllium

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold individually.