Cylinder Head Style: Assembled
Cylinder Head Material:Aluminum
Cylinder Head Finish:Natural
Combustion Chamber Volume (cc):69
CNC-Machined Combustion Chamber:Yes
Intake Runner Volume (cc):255cc
Exhaust Runner Volume (cc):87cc
CNC-Machined Intake Runner:Yes
CNC-Machined Exhaust Runner:Yes
Combustion Chamber Style:Heart
Intake Port Shape:Square
Intake Port Location:Standard
Exhaust Port Shape:Oval
Exhaust Port Location:Standard
Spark Plug Style:Angle
Intake Valves Included:Yes
Intake Valve Diameter (in):2.165 in.
Exhaust Valves Included:Yes
Exhaust Valve Diameter (in):1.600 in.
Valve Springs Included:Yes
Maximum Valve Lift (in):0.650 in.
Outside Diameter of Outer Spring (in):1.300 in.
Damper Spring Included:No
Number of Springs Per Valve:Dual
Lock Style:7 degree
Valve Stem Seals Included:Yes
Rocker Arm Studs Included:No
Rocker Arms Included:No
Rocker Arm Nuts Included:No
Guideplate Pushrod Size:5/16 in.
Accessory Bolt Holes Drilled:Yes
Intake Valve Angle:12
Exhaust Valve Angle:12
Valve Guides Included:Yes
Valve Guide Material:Powdered metal
Valve Seats Machined:Yes
Valve Seat Machine Style:3-angle
Valve Seat Material:Ductile iron
Steam Holes Drilled:No
Oiling Style:Through pushrod
Machined for O-Ring:No
Notes:Includes new rocker arm rail mounts for use with LS3 1.7 ratio rocker arms. OEM rocker arm rail mounts will not work with these heads.