GM Performance Cylinder Head, Aluminum, Assembled, 58cc Chamber, 165cc Intake Runner, Chevy, Small Block Gen I, Each (PART #GMP-12556463)

SPECIFICATIONS

Brand GM Performance
Manufacturer's Part Number 12556463
Part Type Cylinder Heads
Combustion Chamber Volume (cc) 58
Intake Runner Volume (cc) 165cc
Cylinder Head Style Assembled
Cylinder Head Material Cast aluminum
Intake Port Shape Rectangular
Intake Valve Diameter (in.) 1.940 in.
CNC-Machined Combustion Chamber No
CNC-Machined Intake Runner No
CNC-Machined Exhaust Runner No
Combustion Chamber Style Open chamber
Intake Port Location Standard
Exhaust Port Shape D-port
Exhaust Port Location Raised
Spark Plug Style Angle
Intake Valves Included Yes
Exhaust Valves Included Yes
Exhaust Valve Diameter (in.) 1.500 in.
Valve Springs Included Yes
Outside Diameter of Outer Spring (in.) 1.480 in.
Damper Spring Included No
Retainers Included Yes
Locks Included Yes
Valve Stem Seals Included Yes
Rocker Arm Studs Included Yes
Rocker Arm Nut Thread Size 3/8 in.-24
Rocker Arms Included No
Rocker Arm Nuts Included No
Guideplates Included No
Accessory Bolt Holes Drilled Yes
Valve Guides Included No
Valve Seats Machined No
Cylinder Head Color Natural
Steam Holes Drilled No
Oiling Style Through pushrod
Machined for O-Ring No
Heat Crossover No
Remanufactured No
Quantity Sold individually.
Notes L98 based geometry.