12711770 - Chevrolet Performance Assembled L92 Cylinder Head Assembly

Chevrolet Performance Fully Assembled L92 Cylinder Head

Got a 4.00" bore LS engine just itching for a more air and a few more ponies? This new L92 cylinder head is a great affordable bolt-on upgrade that won't clean your wallet out.

L92 Cylinder Head Spec:
• Fits any LS family engine with 4.00" bore or larger, will not works with 4.8L or 5.3L engines
• Solid stem 2.165" intake valves
• Solid stem 1.590" exhaust valves
• Springs good for up to .510" max valve lift
• As-cast L92 style 260cc intake ports
• D-shaped exhaust ports
• 70cc as-cast combustion chambers
• Standard LS 15 degree valve angle

L92 Cylinder Head GM Flow Chart