Big Block Chevy Rectangular Port Race Head
• 572/720R Engine
• 118cc Combustion Chamber
• 2.250" Intake / 1.880" Exhaust Valves
• 11/32" Valve Stem
• 310cc Intake Port
• 118cc Exhaust Port - Raised 5/8"
• Assembled
  
  
  Technical Specs:
• Mechanical roller valve springs - not for use with hydraulic roller cams.
• Good to .720" valve lift.
• 2.250" Intake Valves.
• Valve Spring Retainer Lock.
• 1.880" Exhaust Valves.
• Valve Spring Retainer.
• Valve Springs.
• Valve Seals.
• Valve Spring Shims.
• Rocker Arm Studs.
• Valve Spring Locators.
• Pushrod Guideplates.

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