ProMaxx CNC Ported Ford SB (289-351W) Aluminum Heads
These full CNC ported heads are what the small block Ford stroker engine wants and needs. The professionally designed CNC port flows like the top brands in the industry over 325 cfm. Compare flow numbers and then look at the price. Made right here in the U.S.A. using Grade A 356-T6 aluminum and custom 5 axis CNC machining. 5 angle competition valve job, diamond honed bronze guides, and hand bowl blending. Fully CNC 210cc intake ports, exhaust and choice of 60 or64cc chambers.
Assembled with 2.080"/1.600" stainless steel valves, performance valve springs (mech. roller up to .700" lift), 7/16" screw-in studs and adjustable guide plates.
Part Type: Cylinder Head
Application: Ford Small Block (289-351W)
Cylinder Head Material: Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 64cc
CNC Machined Combustion Chambers: Yes
Intake Valve Angle: 20
Exhaust Valve Angle: 20
Intake Port Volume: 210cc
CNC Machined Intake Port: Yes
Intake Port Flow:
Intake Port Location: Standard
Intake Port Shape: Rectangular
Intake Port Dimensions:
Suggested Intake Gaskets:
Exhaust Port Volume:
CNC Machined Exhaust Port: Yes
Exhaust Port Flow:
Exhaust Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Dimensions:
Suggested Exhaust Gaskets:
Suggested Spark Plug:
Valve Guides:
Valve Guide Spacing:
Valve Stem Diameter:
Valve Seats:
Valve Job: 5-Angle
Intake Valve Diameter: 2.080"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.600"
Exhaust Valve Included: Yes
Suggested Valve Length:
Valve Spring Pockets:
Valve Springs Included: Yes, 1.450"
Valve Spring Application: Mechanical Roller, .700" max lift
Valve Springs Retainers Included: Yes
Valve Locks Included: Yes
Valve Seals Included: Yes
Rocker Studs Included: Yes (7/16")
Guide Plates Included: Yes
Valve Cover Mounting Style: Perimeter bolt
Steam Holes Drilled: No
Heat Crossover: No
Suggested Head Bolts:
Suggested Head Studs:
Suggested Stud Girdle:
Head Bolt Torque with Oil:
Rocker Stud Torque with Oil:
Intake Bolt Torque with Oil:
Manufacturer: Promaxx Performance
Manufacturer's Part Number: 92124
Weight:
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Pair |