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Racing Head Service (RHS) 12052-01 - RHS Pro Action Small Block Chevrolet Cylinder Heads

Racing Head Service (RHS) 12052-01 - RHS Pro Action Small Block Chevrolet Cylinder Heads large image

Image is a representation of this part. Actual part may vary.

  • Cylinder Head, Pro Action, Aluminum, Assembled, 64cc Chamber, 180cc Intake Runner, Chevy, 302, 327, 350, 400
  • Application Specific
  • Estimated Ship Date: 6/11/2012
 
BrandRacing Head Service (RHS)
Manufacturer's Part Number12052-01
Part TypeCylinder Heads
Product LineRHS Pro Action Small Block Chevrolet Cylinder Heads
Summit Racing Part NumberRHS-12052-01
UPC036584203711
 
Cylinder Head StyleAssembled
Cylinder Head MaterialAluminum
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)64
CNC-Machined Combustion ChamberNo
Intake Runner Volume (cc)180cc
Exhaust Runner Volume (cc)74cc
CNC-Machined Intake RunnerNo
CNC-Machined Exhaust RunnerNo
Intake Port ShapeRectangular
Intake Port LocationStandard
Exhaust Port ShapeSquare
Exhaust Port LocationStandard
Spark Plug StyleStraight
Intake Valves IncludedYes
Intake Valve Diameter (in)2.020 in.
Exhaust Valves IncludedYes
Exhaust Valve Diameter (in)1.600 in.
Valve Springs IncludedYes
Maximum Valve Lift (in)0.560 in.
Outside Diameter of Outer Spring (in)1.460 in.
Damper Spring IncludedYes
Number of Springs Per ValveSingle
Retainers IncludedYes
Retainer MaterialSteel
Locks IncludedYes
Lock Style7 degree
Valve Stem Seals IncludedYes
Valve Stem Seal StyleViton®
Rocker Arm Studs IncludedYes
Rocker Arm Nut Thread Size3/8-24 in.
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Guideplates IncludedYes
Guideplate Pushrod Size5/16 in.
Valve Cover Mounting StylePerimeter bolt
Accessory Bolt Holes DrilledYes
Intake Valve Angle23
Exhaust Valve Angle23
Valve Guides IncludedYes
Valve Guide MaterialManganese bronze
Valve Seats MachinedYes
Valve Seat Machine Style4-angle intake/4-angle exhaust
Valve Seat MaterialSteel tungsten alloy
Steam Holes DrilledNo
Oiling StyleThrough pushrod
Machined for O-RingNo
Heat CrossoverYes
QuantitySold individually.
CalculatorCompression Calculator
 

Pro Action cylinder heads by RHS deliver exceptional performance gains for all small block Chevy owners. They come available in both aluminum and cast iron and in a wide variety of intake runner and combustion chamber volumes. Pro Action small block Chevrolet cylinder heads feature straight or angled spark plug configurations, accept valve spring diameters up to 1.550 in., and work with all popular small block Chevy valvetrain components.

Additional features include:

* Multi-angled intake valve seats
* Radius exhaust valve seats
* Improved valve guide design
* Highly efficient water jacket
* Manganese intake valve guides
* Bronze exhaust valve guides
* Hardened valve seats
* Extra-thick deck faces