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Patriot Performance GM LQ9 Stage III Cylinder Heads 2019

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Cylinder Heads, Stage III, Aluminum, Assembled, 72cc Chamber, 225cc Intake Runner, Chevy, 5.7L, LQ9, Pair

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Patriot Performance GM LQ9 Stage III Cylinder Heads

Part Type: Cylinder Heads

Brand: Patriot Performance

Manufacturer's Part Number: 2019

Part Type: Cylinder Heads

Product Line: Patriot Performance GM LQ9 Stage III Cylinder Heads

Summit Racing Part Number: PAR-2019

Cylinder Head Style: Assembled

Cylinder Head Material: Aluminum

Cylinder Head Finish: Natural

Combustion Chamber Volume (cc): 72

CNC-Machined Combustion Chamber: Yes

Intake Runner Volume (cc): 225cc

Exhaust Runner Volume (cc): 83cc

CNC-Machined Intake Runner: Yes

CNC-Machined Exhaust Runner: Yes

Intake Port Location: Standard

Exhaust Port Location: Standard

Spark Plug Style: Straight

Intake Valves Included: Yes

Intake Valve Diameter (in): 2.080 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): 1.460 in.

Damper Spring Included: No

Number of Springs Per Valve: Dual

Retainers Included: Yes

Retainer Material: Titanium

Locks Included: Yes

Lock Style: 10 degree

Valve Stem Seals Included: Yes

Valve Stem Seal Style: Positive stop

Rocker Arm Studs Included: No

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: No

Valve Cover Mounting Style: Centerbolt

Accessory Bolt Holes Drilled: Yes

Valve Guides Included: Yes

Valve Guide Material: Manganese bronze intake/Phosphorous bronze exhaust

Valve Seats Machined: Yes

Valve Seat Machine Style: 5-angle

Valve Seat Material: Steel

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold as a pair.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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These GM LQ9 Stage III cylinder heads from Patriot Performance are designed for maximum output engine applications, adding a 50+ rear wheel horsepower gain to your engine. These heads feature a 72cc combustion chamber, magnesium bronze intake guides, phosphorus bronze exhaust guides, and 5-angle machine-hardened seats. These heads are great for big cubic inch engines, and blower or nitrous applications.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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