225 Series Aluminum Cylinder Heads
• Small Block Chevy
• As-Cast
• 225cc Intake Ports
• 72cc Combustion Chamber
• 2.02'' Intake / 1.60'' Exhaust Valves
• 3/8'' Rocker Arm Studs
• .575" Max Lift
• Steel Retainers
• Assembled, 2/pkg
  
  

  ProMaxx has taken their "As-Cast" Maxx Series 220cc heads, performed their 5-angle valve job, and Bowl Blend to promote flow on this head. This yields a great flowing 225cc runner. To this they added only the highest quality 21-4N stainless valves, .575' lift (hyd. flat tappet) springs, steel retainers, 3/8' studs, bronze guides, and guide plates. These heads are a great addition to engine builds 383ci and larger.

  Additional Cylinder Head Specifications
• Valve Angle: 23°
• Valve Seal Material: Viton
• Spark Plug Configuration: Straight
• Maximum Spring Lift: .575" Hydraulic Flat Tappet Springs

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