GM Performance Cylinder Head 12556463

Brand: GM Performance

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Part Number: 12556463
Part Location: U.S.
Availability: *Special Order
Delivery: Up to 2 Weeks
If purchased before 12:00 EDT - estimated delivery by June 06

Retail: $889.34

Price: $846.99

You Save: $42.35

CNC-Machined

Combustion Chamber Volume (cc)

58 Cubic Centimeter

Condition

Engine Compatibility

Chevy V8 5.7L 350 Cubic Inch

Exhaust Port Location

Raised

Exhaust Valve Diameter (IN)

1-1/2 Inch

Includes Damper Spring

Includes Guideplates

Includes Rocker Arm Studs

Includes Valves

Intake Port Location

Raised

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GM Performance Cylinder Head

Cylinder Head; ZZ4 Aluminum Head; Assembled; Aluminum; 58 CC Chamber; 0.100 Inch Raised D-Shape Exhaust Port; Angled Plug; Single

MPN: 12556463

The revolutionary lightweight ZZ4 aluminum cylinder head was a key component of the highly successful Corvette L98 Small-Block V-8 engine. GM Performance Parts offers that same cylinder head as a complete assembly, with D-Shaped exhaust ports1 (they increase post combustion scavenging for increased power), high velocity exhaust runners and centrally located spark plugs that improve air/fuel mixture burn efficiency for increased power potential. The ZZ4 aluminum cylinder head is ideal for a great variety of engine applications.

Condition: New

Engine Compatibility: Chevy V8 5.7L 350 Cubic Inch

Style: Assembled

Material: Aluminum

CNC-Machined: No

Combustion Chamber Volume (cc): 58 Cubic Centimeter

Intake Runner Volume (CC): 163 Cubic Centimeter

Port Shape: D-Shape

Intake Port Location: Raised

Exhaust Port Location: Raised

Intake Valve Diameter (IN): 1.94 Inch

Exhaust Valve Diameter (IN): 1-1/2 Inch

Includes Valves: Yes

Spark Plug Angle: Angled

Rocker Arm Nut Thread Size: 3/8 Inch

Includes Rocker Arm Studs: Yes

Number Of Springs Per Valve: Single

Valve Seats Machined: No

Steam Holes Drilled: No

Machined For O-Ring: No

Includes Guideplates: No

Includes Damper Spring: No

Features

No Heat Riser
Angled Spark Plugs
Screw-In Studs
Raised, Machined Rocker Rails
Use Head Gaskets With Stainless Steel Fire Rings
Limited 1 Year Or 12000 Mile Warranty

Specifications of GM Performance Cylinder Head 12556463
CNC-Machined	No
Combustion Chamber Volume (cc)	58 Cubic Centimeter
Condition	New
Engine Compatibility	Chevy V8 5.7L 350 Cubic Inch
Exhaust Port Location	Raised
Exhaust Valve Diameter (IN)	1-1/2 Inch
Includes Damper Spring	No
Includes Guideplates	No
Includes Rocker Arm Studs	Yes
Includes Valves	Yes
Intake Port Location	Raised
Intake Runner Volume (CC)	163 Cubic Centimeter
Intake Valve Diameter (IN)	1.94 Inch
Machined For O-Ring	No
Material	Aluminum
Number Of Springs Per Valve	Single
Port Shape	D-Shape
Rocker Arm Nut Thread Size	3/8 Inch
Spark Plug Angle	Angled
Steam Holes Drilled	No
Style	Assembled
Valve Seats Machined	No