LS-Series Cylinder Head – 

Part Number: 12629051
Description:  Bare L92
Material Size:  Aluminum
Port Size: 260
Valve Angle:  15 deg
Chamber Vlv: 70
Int Vlv:  2.165
Exh Type:  1.590
Int Port Type:  L92
Ex Port Type:  Std LS
Rocker:  Bolt-down
Notes Number: Bare L92