FLOTEK 203-505 Features:

FLOTEK 180cc small block Ford cylinder heads feature as-cast ports, up to 0.550 in. lift, and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. They come fully assembled and ready for a bolt-in installation; Replace your stock heads with high performance FLOTEK 180cc small block Ford cylinder heads. Order the model recommended for your engine application.

• Single cylinder head
• Available for 289, 302, and 351W engines
• Will not accept stock pushrods
• Thermactor plugs (EGR) not included
• PAC, Manley, Comp Cam springs, and custom builds available

  Specifications:

  • Combustion Chamber Volume (cc): 58
  • Intake Runner Volume (cc): 180cc
  • Exhaust Runner Volume (cc): 62cc
  • Cylinder Head Style: Assembled
  • Cylinder Head Material: Cast Aluminum
  • Camshaft Style: Hydraulic Roller
  • Intake Port Shape: Rectangular
  • Intake Valve Diameter (in.): 1.940 in.
  • CNC-Machined Combustion Chamber: No
  • CNC-Machined Intake Runner: No
  • CNC-Machined Exhaust Runner: No
  • Combustion Chamber Style: Heart
  • Intake Port Location: Standard
  • Exhaust Port Shape: Square
  • Exhaust Port Location: Standard
  • Intake Valves Included: Yes
  • Exhaust Valves Included: Yes
  • Exhaust Valve Diameter (in.): 1.550 in.
  • Valve Springs Included: Yes
  • Maximum Valve Lift (in.): 0.550 in.
  • Outside Diameter of Outer Spring: 1.460 in.
  • Damper Spring Included: Yes
  • Number of Springs Per Valve: Single
  • Retainers Included: Yes
  • Retainer Material: Chromoly Steel
  • Locks Included: Yes
  • Lock Style: 7 Degree
  • Valve Stem Seals Included: Yes
  • Valve Stem Seal Style: Positive Stop
  • Rocker Arm Studs Included: Yes
  • Rocker Arm Nut Thread Size: 3/8 in.-24
  • Rocker Arms Included: No
  • Rocker Arm Nuts Included: No
  • Guideplates Included: Yes
  • Guideplate Pushrod Size: 5/16 in.
  • Valve Cover Mounting Style: Perimeter Bolt
  • Accessory Bolt Holes Drilled: Yes
  • Intake Valve Angle: 20
  • Exhaust Valve Angle: 20
  • Valve Guides Included: Yes
  • Valve Guide Material: Manganese Bronze
  • Valve Seats Machined: Yes
  • Valve Seat Machine Style: 3-Angle
  • Valve Seat Material: Cast Alloy
  • Cylinder Head Finish: Natural
  • Steam Holes Drilled: No
  • Oiling Style: Through Pushrod
  • Machined for O-Ring: No
  • Heat Crossover: Yes
  • Remanufactured: No
  • Quantity: Sold Individually

  Emissions Note:

  This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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