Dart 13071123 - Dart SB-Ford Pro 1 Aluminum Cylinder Heads

Dart #301-13071123

SBF Pro 1 Assembled CNC Head

Dual Valve Springs: 1.550"
(195 lbs @ 1.90", .690" max lift)

Sold individually

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Complete list of Dart SB-Ford Pro 1 Aluminum Cylinder Heads

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Dart 13071123 - Dart SB-Ford Pro 1 Aluminum Cylinder Heads Details

CNC-Ported SB-Ford

Intake Ports: 210cc

Combustion Chambers: 62cc

Valves: 2.05" Int/1.60" Exh

Angle Plug

SPECIFICATIONS

Block: Iron or aluminum Ford

Valvetrain: Roller rockers 3/8" or 7/16" stud mount

Intake Port Location: Stock

Intake Port Dimensions: 2.150" x 1.300"

Intake Flow: 305 cfm @ .600" lift/28"

Intake Gasket: #375-1262

Exhaust Port Location: Raised .135"

Exhaust Port Dimensions: 1.420" x 1.420"

Exhaust Flow: 208 cfm @ .600" lift/28"

Exhaust Gasket: #375-1487

Manifold: Most with standard port location

Pushrod Length: Please measure

Pushrod Guide Plate: #249-4816-8 (flat)

Retainers: Titanium

Stud Girdle: Any standard girdle

Valve Length: 4.890"

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

Valve Guides: 1/2" OD Mag-Bronze (.002" press)

Valve Guide Length: 2.100"

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

Valve Guide Spacing: Moved .050" from stock

Valve Seats: Hardened Ductile Iron, .006" press

Valve Seat Dimensions: Intake 2.160" x 1.810" x .350", Exhaust 1.650" x 1.350" x .350"

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

The Best Value in High-Performance
Aluminum Heads for Small Block Ford
Standard Pro 1 Cylinder Heads deliver outstanding airflow using advanced tooling & state-of-the-art casting techniques while the CNC-ported version provides even more "flow for your dough."

Engineered for easy installation as bolt-on replacements for most conventional heads, Pro 1 heads accept standard small block pistons, headers, and valvetrain components. Dart improved the original design with thicker decks and high-capacity water jackets that increase reliability in high-performance applications. Hardened exhaust seats and durable bronze valve guides significantly extend cylinder head life. Sold individually.