AFR 245cc LS1 Cylinder Head

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245cc LS1 Cylinder Head

SKU: AFR-1680

Manufacturer: AFR

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AFR’s 245cc LSX “Competition” ported heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for race applications or radical “Pro Street” style builds with displacements up to 454 cubic inches, operating up to 6800 RPM. Requires minimum 4.000 bore size for intake valve clearance.

Package Components include:

100% CNC Ported Combustion Chambers

100% CNC Ported Exhaust Ports

100% CNC Ported Intake Ports

Competition 5-angle Valve Job

8mm Bead Lock Intake Valve, 2.165" x 4.900" Overall Valve Length

8mm Bead Lock Exhaust Valve, 1.600" x 4.900" Overall Valve Length

PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650” maximum lift, Max RPM 7000-7200

7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D

7° Bead Lock Valve Keepers

Viton Valve Seals .600" O.D x .495" I.D

Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D

Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep

Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep

8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L

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