Chevrolet Performance 19419193 - LSX-LS7 Cylinder Head Assembly As Cast

• 6-bolt-per-cylinder bolt pattern • LS7 style rectangle port design • Assembled with 2.200" titanium intake and 1.610" sodium-filled exhaust valves • 12° valve angle; minimum 4.100" bore • 270cc “as-cast” intake ports, 85cc “as-cast” exhaust ports • 70cc “as-cast” combustion chambers • Handles .650" list with premium springs • Uses LS7 rocker arms/LS7 bolts