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When Dart Designed their new 11° Big Chief head, they relied on owner Richard Maskins year of championship winning engine experience to create the best "out of the box" big block cylinder head available! With huge 497cc intake runner flowing nearly 525cfm at .900 lift, this is the ultimate head for large cubic inch engines. Custom pistons 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: 11

Exhaust Valve Angle: 11

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.

Notes: Requires aftermarket Jesel or T&D shaft rocker arm system, special Big Chief head bolts, valve covers, pistons, and the matching intake manifold.