Speedmaster PCE281.1740 Features:

• Cylinder Head Style: Bare
• Cylinder Head Material: Aluminum
• Cylinder Head Finish: Natural
• Combustion Chamber Volume (cc): 77 cc
• CNC-Machined Combustion Chamber: No
• Intake Runner Volume (cc): 188 cc
• Exhaust Runner Volume (cc): n/a
• CNC-Machined Intake Runner: No
• CNC-Machined Exhaust Runner: No
• Intake Port Shape: Rectangular
• Intake Port Location: Standard
• Exhaust Port Shape: Square
• Exhaust Port Location: Standard
• Spark Plug Style: OEM
• Comp. Valve Job: No
• Intake Valves Included: No
• Intake Valve Diameter (in): 2.072 in.
• Exhaust Valves Included: No
• Exhaust Valve Diameter (in): 1.680 in.
• Valve Springs Included: No
• Maximum Valve Diameter (in): 0.615 in.
• Outside Diameter of Outer Spring (in): 1.450 in.
• Damper Spring Included: No
• Retainers Included: No
• Locks Included: No
• Valve Stem Seals Included: No
• Rocker Arm Studs Included: No
• Rocker Arms Included: No
• Rocker Arm Nuts Included: No
• Guideplates Included: No
• Valve Cover Mounting Style: Center & Perimeter Bolt
• Accessory Bolt Holes Drilled: Yes
• Intake Valve Angle: 18 deg.
• Exhaust Valve Angle: 18 deg.
• Valve Guides Included: Yes
• Valve Guide Material: Bronze
• Valve Seats Machined: Yes
• Valve Seat Machine Style: 3-angle
• Valve Seat Material: Ductile iron
• Steam Holes Drilled: No
• Oiling Style: Through pushrod
• Machined for O-Ring: No
• Heat Crossover: No

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.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART