Pro Action Bare LS1 Cylinder Head

Don't bother searching through junkyards for 243 or 799 casting heads, the RHS Pro Action LS1 Cylinder Head is a better option. Manufactured from premium materials to the industry's tightest tolerances, the RHS Pro Action Cathedral Port Head for GM LS1/LS2/LS6 is a far better option. Compatible with stock components along with COMP Cams premium valvetrain components, the RHS Pro Action Head is ready to bolt on, requiring no milling or clean up like junkyard pieces. Available bare, un-assembled for porting projects as well as pre-assembled, the RHS Pro Action LS1 Cathedral PortCylinder Head is a great choice for your next 4.8, 5.3, 5.7, 6.0 and 6.2 GM LS project!

Additional Attributes:

GTIN: 00036584405665
Accessory Bolt Holes Drilled?: Yes
CNC Ported?: No
CNC-Machined Exhaust Runner?: No
CNC-Machined Intake Runner?: No
Combustion Chamber Volume: 65
Compatible GM LS Engines (RPO Codes): LS1/LS6/LS2/LQ4/LQ9/LM7/LR4/LM4/L33
Cylinder Head Finish: Bare Aluminum
Cylinder Head Material: Aluminum
Exhaust Port Location: Stock
Exhaust Runner Volume: 75
Exhaust Valve Diameter: 1.55
Exhaust Valve Length: –
Exhaust Valve Material: –
Exhaust Valve Stem Diameter: 8mm
Exhaust Valves Included: No
Flow at 0.100″ Valve Lift: N/A
Flow at 0.200″ Valve Lift: N/A
Flow at 0.300″ Valve Lift: N/A
Flow at 0.400″ Valve Lift: N/A
Flow at 0.450″ Valve Lift: N/A
Flow at 0.500″ Valve Lift: N/A
Flow at 0.550″ Valve Lift: N/A
Flow at 0.600″ Valve Lift: N/A
Flow at 0.650″ Valve Lift: N/A
Flow at 0.700″ Valve Lift: N/A
GM Performance OE Number: N/A
Grade Type: –
Head Gaskets Included?: No
Heat Crossover?: N/A
Includes Valve Locks?: No
Includes Valve Spring Retainers?: No
Includes Valve Springs?: No
Intake Port Location: Stock
Intake Port Shape: Cathedral
Intake Runner Volume: 210
Intake Valve Angle: 15
Intake Valve Diameter: 2
Intake Valve Length: –
Intake Valve Material: N/A
Intake Valve Stem Diameter: 8mm
Intake Valves Included: No
Machined for O-Ring?: No
Push Rod Diameter: 16-May
Rocker Arm Nut Thread Size: N/A
Rocker Arm Nuts Included: No
Rocker Arm Studs Included?: No
Rocker Arms Included: No
Spark Plug Style: Tapered or Gasketed
Valve Guide Material: Bronze
Valve Guide Outer Diameter: 0.5
Valve Guides Included?: Yes
Valve Seat Machine Style: 3 angle
Valve Seat Material: Powdered Metal
Valve Seats Machined?: Yes
Valve Spring Diameter: N/A
Valve Spring Installed Height: N/A
Valve Spring Maximum Valve Lift: N/A
Valve Spring Open Pressure at Max Lift: N/A
Valve Spring Retainer Material: N/A
Valve Spring Seat Diameter: 1.3
Valve Spring Seat Pressure: N/A
Valve Springs Included?: No
Valve Stem Seal Type: N/A
Valve Stem Seals Included?: N/A

Extended Information:

Emissions : CARB Eligible
Life Cycle Status: Discontinued

Packaging:

Quantity of Each: 1
Package UOM: EA
Dimension: 22.5 x 9 x 7 inches
Weight: 24.5 PG