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: 00036584405672
Accessory Bolt Holes Drilled?: Yes
Chevrolet Parts OE Number: 12564243
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: As Cast
Cylinder Head Material: Aluminum
Exhaust Port Location: Stock
Exhaust Runner Volume: 75
Exhaust Valve Diameter: 1.55
Exhaust Valve Length: Stock
Exhaust Valve Material: Stainless Steel
Exhaust Valve Stem Diameter: 8
Exhaust Valves Included: Yes
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
Grade Type: –
Head Gaskets Included?: No
Heat Crossover?: No
Includes Valve Locks?: Yes
Includes Valve Spring Retainers?: Yes
Includes Valve Springs?: Yes
Intake Port Location: Stock
Intake Port Shape: Cathedral
Intake Runner Volume: 210
Intake Valve Angle: 15
Intake Valve Diameter: 2
Intake Valve Length: Stock
Intake Valve Material: Stainless Steel
Intake Valve Stem Diameter: 8
Intake Valves Included: Yes
Machined for O-Ring?: No
Push Rod Diameter: 5/16
Rocker Arm Nut Thread Size: –
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: 1.29
Valve Spring Installed Height: 1.8
Valve Spring Maximum Valve Lift: 0.66
Valve Spring Open Pressure at Max Lift: 463
Valve Spring Retainer Material: Steel
Valve Spring Seat Diameter: 1.3
Valve Spring Seat Pressure: 145
Valve Springs Included?: Yes
Valve Stem Seal Type: Viton®
Valve Stem Seals Included?: Yes
Extended Information:
Emissions : EPA Eligible
Life Cycle Status: Available To Order
Packaging:
Quantity of Each: 1
Package UOM: EA
Dimension: 22.5 x 9 x 7 inches
Weight: 28.87 PG
Reviews
There are no reviews yet.