Dart Machinery Pro 1 Aluminum Ford SB Head Standard valve angle and spacing is retained for bolt-on compatibility. Exhaust runners are raised .135" for improved flow. As-cast heads are bowl blended. Other features include bronze guides and hardened exhaust seats. Four intake runners sizes cover applications from street performance to serious racing.
Part Type: Cylinder Head Application: Ford Small Block (289-351W) Cylinder Head Material: Aluminum Bare or Assembled: Bare Combustion Chamber Size: 58cc CNC Machined Combustion Chambers: No Intake Valve Angle: 20 Exhaust Valve Angle: 20 Intake Port Volume: 195cc CNC Machined Intake Port: No Intake Port Flow: 288 cfm @ .700" lift /28" Intake Port Location: Standard Intake Port Shape: Rectangular Intake Port Dimensions: 2.000" x 1.125" Suggested Intake Gaskets: Fel-Pro 1262 or Equivalent Exhaust Port Volume: 65cc CNC Machined Exhaust Port: No Exhaust Port Flow: 185 cfm @ .700" lift /28" Exhaust Port Location: Raised .135" Exhaust Port Shape: Square Exhaust Port Dimensions: 1.350" x 1.350" Suggested Exhaust Gaskets: Fel-Pro 1487 Suggested Spark Plug: .750" reach Valve Guides: Manganese bronze Valve Guide Spacing: 1.876" moved .055" from stock Valve Stem Diameter: 11/32" (.3415") Valve Seats: Hardened ductile iron Valve Job: Multi-Angle Intake Valve Diameter: 2.020" Intake Valve Included: No Exhaust Valve Diameter: 1.600" Exhaust Valve Included: No Suggested Valve Length: Intake: 4.890", Exhaust: 5.035" (+.100") roller Valve Spring Pockets: 1.550" O.D. (.050" deeper MAX) Valve Springs Included: No Valve Spring Application: NA Valve Springs Retainers Included: No Valve Locks Included: No Valve Seals Included: No Rocker Studs Included: No Guide Plates Included: No Valve Cover Mounting Style: Perimeter bolt Steam Holes Drilled: No Heat Crossover: No Suggested Head Bolts: ARP 154-3603 Suggested Head Studs: ARP 154-4003 Suggested Stud Girdle: Jomar 1126 Head Bolt Torque with Oil: 7/16" bolts: 65 ft./lbs., 1/2" bolts: 100 ft./lbs. Rocker Stud Torque with Oil: 45 ft./lbs. Intake Bolt Torque with Oil: 18 ft./lbs. Manufacturer: Dart Machinery Manufacturer's Part Number: 13200010 Weight: 23 lbs. Warranty: Race Application, No warranty expressed or implied Quantity: Sold as Pair |