Features:

• Combustion Chamber Volume (cc): 64cc
• Intake Runner Volume (cc): 195cc
• Exhaust Runner Volume (cc): 75cc
• Intake Port Location: Standard
• Exhaust Port Shape: Square-port
• Exhaust Port Location: .500 in Raised
• Spark Plug Style: Straight, .750 Reach Gasket
• Intake Valve Diameter (in): 2.020"
• Exhaust Valve Diameter (in): 1.600"
• Maximum Valve Lift (in): .575"
• Spring Pressure Closed: 115-125 @ 1.800"
• Spring Pressure Open: 295-305 @ 1.225"
• Outside Diameter of Outer Spring (in): 1.437"
• Number of Springs Per Valve: Dual
• Retainer Material: Chromemoly steel
• Lock Style: 7 degree
• Valve Stem Seal Style: Viton® Fluoroelastomer
• Rocker Arm Nut Thread Size: 7/16 in.-24
• Guideplate Pushrod Size: 5/16"
• Valve Cover Mounting Style: Perimeter bolt
• Accessory Bolt Holes Drilled: Yes
• Intake Valve Angle: 23 Degrees
• Exhaust Valve Angle: 23 Degrees
• Valve Guide Material: Manganese bronze
• Valve Seat Machine Style: 3-angle
• Valve Seat Material: Chrome Nickel
• Steam Holes Drilled: No
• Oiling Style: Through pushrod
• Machined for O-Ring: No
• Heat Crossover: No

Note: Will accept early Chevrolet 12-Bolt intake manifold or late model "Vortec" style 8-bolt manifold.

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