COPO LS7 CNC Cylinder Head Assembly, 275cc intake ports
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CHEVROLET PERFORMANCEPART NUMBER: 809-17802818

COPO LS7 CNC Cylinder Head Assembly, 275cc intake ports

$3,91043
ShippingShips on 09/14/2026
Lowest PriceLowest Price Guarantee

    COPO LS7 CNC Cylinder Head Assembly
  • 275cc intake ports
  • 2.205'' titanium intake valves
  • 1.615'' sodium-filled exhaust valves
  • Max-Life Beehive-type valve springs
  • Valve retainers and locks
  • Valve seals
  • Intake lash cap


    The high-revving horsepower of the COPO racing engines is enabled bythe high-flow LS7 CNC cylinder head, which features a 12-degree valveangle for efficient airflow at high rpm. The head is fully CNC machinedand the 356-T6 aluminum casting features 275cc (nominal) intake ports,90cc exhaust ports and 70cc combustion chambers. There's also athick, 5/8' deck for exceptional (nominal) strength.

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

Part TypeCylinder Head
BrandCHEVROLET PERFORMANCE
Package Height6.4
Package Width8.73
Package Length510.1
Part CategoryPerformance Parts
Push Rod Diameter0.375
Head Casting Number8452
Valve Angle12
MaterialAluminum
Intake Valve Diameter2.205
Deck Thickness0.625
Deck Height234.7
Guide Plates IncludedNo
Combustion Chamber Volume70
Valve Spring Maximum Lift16.51
Intake Runner Volume275
Valve Spring Diameter32.766
Valve Stem Diameter0.314
Part FitmentSemi Universal
Grade TypePerformance
Exhaust Valve Diameter1.615
Vendor Part Number17802818
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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