Product Overview
Fit any LS engine with Chevrolet Performance LS3 cylinder heads, or upgrade your build with these performance 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. Great baseline for your boost build. Use these heads and add our boost cam kit for the 4.8/5.3 and 6.0/6.2/6/7+
- Combustion Chamber Volume (cc): 68.4
- Intake Runner Volume (cc): 260cc
- Cylinder Head Style: Assembled
- Cylinder Head Material: Aluminum
- Intake Port Shape: Rectangular
- Intake Valve Diameter (in.): 2.165 in.
- Cylinder Head Finish: Natural
- CNC-Machined Combustion Chamber: No
- CNC-Machined Intake Runner: No
- CNC-Machined Exhaust Runner: No
- Intake Port Location: Standard
- Exhaust Port Shape: D-port
- Exhaust Port Location: Standard
- Spark Plug Style: Angle
- Intake Valves Included: Yes
- 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
- Guide plates Included: No
- Valve Cover Mounting Style: Center bolt
- 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: These cylinder heads can only be used on 4 bolt LS-based engines with a 4.000 in. bore or larger.
