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Chevrolet Performance LS3 Cylinder Heads 12629063

Chevrolet Performance 12629063 - Chevrolet Performance LS3 Cylinder Heads

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Cylinder Head, LS3, Aluminum, Assembled, 68.4cc, 260cc Intake Runner, Each

Estimated Ship Date: Tomorrow Would you rather pick it up? Select Location

Brand: Chevrolet Performance

Manufacturer's Part Number: 12629063

Part Type: Cylinder Heads

Product Line: Chevrolet Performance LS3 Cylinder Heads

Summit Racing Part Number: NAL-12629063

Cylinder Head Style: Assembled

Cylinder Head Material: Aluminum

Cylinder Head Finish: Natural

Combustion Chamber Volume (cc): 68.4

CNC-Machined Combustion Chamber: No

Intake Runner Volume (cc): 260cc

CNC-Machined Intake Runner: No

CNC-Machined Exhaust Runner: No

Intake Port Shape: Rectangular

Intake Port Location: Standard

Exhaust Port Shape: D-port

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): 1.590 in.

Valve Springs Included: Yes

Maximum Valve Lift (in): 0.570 in.

Outside Diameter of Outer Spring (in): 1.290 in.

Damper Spring Included: No

Number of Springs Per Valve: Single

Retainers Included: Yes

Retainer Material: Steel

Locks Included: Yes

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

Intake Valve Angle: 15

Exhaust Valve Angle: 15

Valve Guides Included: Yes

Valve Guide Material: Powdered metal

Valve Seats Machined: Yes

Valve Seat Material: Steel

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold individually.

Notes: Fits any LS family engine with 4 in. bore or larger.

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

Calculator Compression Calculator

Fit any LS engine with Chevrolet Performance LS3 cylinder heads. Manufactured from aluminum alloy, these GM stock replacement heads are assembled with intake and exhaust valves, stem seals, retainers, springs, and locks. Great cylinder head airflow has always supplied the LS Series with exceptional performance. Retain that performance and save yourself time and worry by replacing your tired cylinder heads with Chevrolet Performance LS3 cylinder heads.

Warranty

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

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