COPO LS7 CNC Cylinder Head Bare
• 275cc intake ports
  
  
• Intake, exhaust and combustion chambers are optimized for COPO drag-race engines.
• All COPO 350 and 396 racing cylinder heads are built with the same "Max-life" valve springs and hardened spring seats as the 327-SC and the 427 naturally aspirated, plus, they include lightweight hollow-stem LS3 intake valves and lightweight LS9 hollow-stem exhaust valves.
  Note: All the same high-flow attributes as the assembled head, but delivered unassembled. Valves and valve train components must be purchased separately.

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