FLOTEK LS3-505 Features:

FLOTEK 276cc LS3 cylinder heads feature as-cast high-flow intake runners that flow significantly better than the stock LS3 heads. The ports are in the stock location, so no special valvetrain parts or rocker arms are required. These heads are 15 degree, which is the same as the stock cylinder heads—no special pistons are required. They will work on any LS block that has a 4 in. bore or larger. FLOTEK 276cc LS3 cylinder heads combine high performance and high quality at a value price. Select from bare or assembled models.

Specifications:

• Combustion Chamber Volume (cc): 68
• Intake Runner Volume (cc): 276cc
• Exhaust Runner Volume (cc): 92cc
• Cylinder Head Style: Assembled
• Cylinder Head Material: Cast Aluminum
• Camshaft Style: Hydraulic Roller
• Intake Port Shape: Rectangular
• Intake Valve Diameter (in.): 2.160 in.
• CNC-Machined Combustion Chamber: No
• CNC-Machined Intake Runner: No
• CNC-Machined Exhaust Runner: No
• Combustion Chamber Style: Kidney
• Intake Port Location: Standard
• Exhaust Port Shape: Rectangular
• 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.): 0.625 in.
• Outside Diameter of Outer Spring: 1.290 in.
• Damper Spring Included: Yes
• Number of Springs Per Valve: Dual
• Retainers Included: Yes
• Retainer Material: Chromoly Steel
• Locks Included: Yes
• Lock Style: 7 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
• Intake Valve Angle: 15
• Exhaust Valve Angle: 15
• Valve Guides Included: Yes
• Valve Guide Material: Bronze
• Valve Seats Machined: Yes
• Valve Seat Material: Powdered Metal
• Cylinder Head Finish: Natural
• Steam Holes Drilled: No
• Oiling Style: Through Pushrod
• Machined for O-Ring: No
• Heat Crossover: No
• Remanufactured: No
• Quantity: Sold Individually

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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