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Racing Head Service (RHS)
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Engine Cylinder Head
Engine Top End Kit
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Racing Head Service (RHS)
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Accessory Bolt Holes Drilled?: Yes
Air and Fuel Delivery
Belts
Brand Name: Racing Head Service (RHS)
Camshaft Included: 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
Damper Spring Included: No
Emissions : Emissions Compliance Exempt
Emissions : Not in CA
Exhaust Duration at .050" Lift: 222
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
Fuel Delivery Style: Multiport - MPI
Fuel Rails
Fuel Rails Included: Yes
Gaskets Included: Yes
Grade Type: -
Guideplate Pushrod Size: No
Guideplates Included: No
Head Gaskets Included?: No
Heat Crossover?: No
Includes Valve Locks?: Yes
Includes Valve Spring Retainers?: Yes
Includes Valve Springs?: Yes
Injectors
Injectors Included: No
Intake Advertised Duration: 272
Intake Duration at .050" Lift: 218
Intake Finish: Textured Black Anodize
Intake Manifold Included: Yes
Intake Manifold Name: RHS Sheet Metal Intake
Intake Material: Aluminum
Intake Port Location: Stock
Intake Port Shape: Cathedral
Intake Port Shape: Cathedral Port/LS1/2/6
Intake Runner Volume: 210
Intake Style: Fabricated Sheet Metal
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
Life Cycle Status: Available To Order
Life Cycle Status: Proposed
Lifters Included: No
Lock Style: Stock Beadlock
Locks Included: Yes
Machined for O-Ring?: No
Number of Springs Per Valve: 1
Outside Diameter of Outer Spring (in): 1.077 in./1.282 in.
Push Rod Diameter: 5/16
Pushrods Included: No
QuoteOnly
Required Injector Size/Footprint (LS1/LS3/LS2): LS1
Retainer Material: Steel
Retainers Included: Yes
Rocker Arm Nuts Included: No
Rocker Arm Studs Included: No
Rocker Arm Studs Included?: No
Rocker Arms Included: No
Rocker Arms Included:: No
Spark Plug Style: Tapered or Gasketed
Throttle Bolt Style (3 or 4 Bolt): 4
Timing
Timing Chain and Gears Included: No
Valve Covers Included: No
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 Seat Diameter: 1.3
Valve Springs Included: Yes
Valve Stem Seal Material: Stock
Valve Stem Seal Style: Hat
Valve Stem Seals Included: Yes
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Pro Action Bare LS1 Cylinder Head
$716.95 USD
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Pro Action Un-Assembled LS1 Cylinder Head w/ .570" Lift LS6+ Springs
$734.95 USD
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Pro Action Un-Assembled LS1 Cylinder Head w/ .660" Lift Dual Springs
$785.95 USD
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Stage 1 Induction Package for Turbo GM LS1/Cathedral Port
$1,608.95 USD
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Stage 1 No Springs Required Induction Package for N/A GM LS1/Cathedral Port
$1,382.95 USD
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Stage 2 Induction Package for N/A GM LS1/Cathedral Port
$1,608.95 USD
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Stage 2 Induction Package for Turbo GM LS1/Cathedral Port
$1,789.95 USD
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