Dart 13311112 - Dart SB-Ford Iron Eagle Cylinder Heads

Dart #301-13311112

SBF Iron Eagle Assembled Cyl Head

Dual Valve Springs: 1.437"
(130 lbs @ 1.80", .620" max lift)

Sold individually

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Complete list of Dart SB-Ford Iron Eagle Cylinder Heads

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Dart 13311112 - Dart SB-Ford Iron Eagle Cylinder Heads Details

SB-Ford

Intake Ports: 180cc

Combustion Chambers: 62cc

Valves: 2.02" Int/1.60" Exh

SPECIFICATIONS

Block: Standard SB-Ford

Valvetrain: Standard stud-mounted 3/8" rockers

Intake Port Location: Stock

Intake Port Dimensions: 1.175" x 2.050"

Intake Flow: 247 cfm @ .500" lift

Intake Gasket: #375-1250

Exhaust Port Location: Stock

Exhaust Port Dimensions: 1.325" x 1.350"

Exhaust Flow: 159 cfm @ .500" lift

Exhaust Gasket: #375-1486

Manifold: Standard

Pushrod Length: Stock (should always measure)

Pushrod Guide Plate: #249-4816-8

Retainers: Chrome Moly Steel 10°

Stud Girdle: Any standard girdle

Valve Length: 4.890"

Valve Stem Diameter: .3415", 11/32"

Valve Guides: Magnesium-Bronze

Valve Guide Length: 2.000"

Valve Guide Clearance: .0014" to .002" (using Dart .3415" valve stem)

Valve Guide Spacing: 1.890"

Valve Seats: Ductile Iron

Valve Seat Dimensions: 1.650" x 1.350" x .350"

Valve Seat Angles: Intake 32°, 45°, 60°, 70°, 80°; Exhaust 37°, 45°, radius

A True Bolt-On Performance Upgrade
For the popular 289/302/351 family of Ford engines, Iron Eagle high-performance heads are CNC-machined from premium cast iron with streamlined valve guide bosses to improve airflow and reshaped chambers to enhance combustion efficiency for more power. At 180cc, intake ports are 15cc larger than stock. Sold individually.