GM Performance Cylinder Head 12621774

Brand: GM Performance

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Part Number: 12621774
Part Location: U.S.
Availability: *Special Order
Delivery: Up to 2 Weeks
If purchased before 12:00 EDT - estimated delivery by June 06

Retail: $1,490.99

Price: $1,419.99

You Save: $71.00

CNC-Machined

Combustion Chamber Volume (cc)

68 Cubic Centimeter

Condition

Engine Compatibility

Chevy LS9 Series Engine

Exhaust Port Location

Standard

Exhaust Valve Diameter (IN)

1.59 Inch

Includes Damper Spring

Includes Guideplates

Includes Rocker Arm Studs

Includes Valves

Intake Port Location

Standard

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GM Performance Cylinder Head

Cylinder Head; LS Engine Cylinder Head; For Use With LS9 Engine Blocks; Titanium Intake With Hollow Stem Exhaust Valves

MPN: 12621774

Great cylinder head airflow has been a key enabler of the LS Series exceptional performance. GM Performance Parts delivers those power building attributes to you with a range of production style aluminum heads from the LS6 heads for smaller displacement engines to LS7 style heads for 427 Inch and larger combinations, our aluminum heads benefit from General Motors’ extensive research and development program, ensuring maximum airflow without compromises. In fact, many professional builders use our heads as straight bolt-on, with no further machining. Many of our assembled heads use premium machining and materials, including CNC finishing and porting, along with lightweight, hollow stem valves, sodium filled exhaust valves and on some heads, lightweight titanium intake valves.

Condition: New

Engine Compatibility: Chevy LS9 Series Engine

Style: Assembled

Material: Aluminum

CNC-Machined: No

Combustion Chamber Volume (cc): 68 Cubic Centimeter

Port Shape: Rectangular

Intake Port Location: Standard

Exhaust Port Location: Standard

Intake Valve Diameter (IN): 2.16 Inch

Exhaust Valve Diameter (IN): 1.59 Inch

Includes Valves: Yes

Spark Plug Angle: Angled

Includes Rocker Arm Studs: No

Valve Seats Machined: No

Steam Holes Drilled: No

Machined For O-Ring: No

Includes Guideplates: No

Includes Damper Spring: No

Features

Made From 356-T6M Aluminum
No Heat Riser
Heli Coiled 7/16 Inch Screw-In Rocker Stud Holes. Designed For Use With 3/8 Inch Pushrods
ZR-1 Corvette Production Cylinder Head Assembly
Extra Strength Casting With Re-Enforced Webbing For Supercharged Engines
Thicker Deck Surface For Minimal Distortion
Titanium Intake And Hollow Sodium Filled Exhaust Valves
Limited 1 Year Or 12000 Mile Warranty

Specifications of GM Performance Cylinder Head 12621774
CNC-Machined	No
Combustion Chamber Volume (cc)	68 Cubic Centimeter
Condition	New
Engine Compatibility	Chevy LS9 Series Engine
Exhaust Port Location	Standard
Exhaust Valve Diameter (IN)	1.59 Inch
Includes Damper Spring	No
Includes Guideplates	No
Includes Rocker Arm Studs	No
Includes Valves	Yes
Intake Port Location	Standard
Intake Valve Diameter (IN)	2.16 Inch
Machined For O-Ring	No
Material	Aluminum
Port Shape	Rectangular
Spark Plug Angle	Angled
Steam Holes Drilled	No
Style	Assembled
Valve Seats Machined	No