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Racing Head Service (RHS) 12407 - RHS Pro Torker Small Block Chevy Cylinder Heads

  • Cylinder Head, Pro Action, Cast Iron, Bare, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Vortec,Each
  • Additional Info
    • Renamed Part: RHS-12407
      The part CCA-12407 has been renamed to RHS-12407.
 
BrandRacing Head Service (RHS)
Manufacturer's Part Number12407
Part TypeCylinder Heads
Product LineRHS Pro Torker Small Block Chevy Cylinder Heads
Summit Racing Part NumberCCA-12407
UPC036584136804
 
Cylinder Head StyleBare
Cylinder Head MaterialCast iron
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)64
CNC-Machined Combustion ChamberNo
Intake Runner Volume (cc)170cc
Exhaust Runner Volume (cc)67cc
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 IncludedNo
Intake Valve Diameter (in)1.940 in.
Exhaust Valves IncludedNo
Exhaust Valve Diameter (in)1.500 in.
Valve Springs IncludedNo
Damper Spring IncludedNo
Retainers IncludedNo
Locks IncludedNo
Valve Stem Seals IncludedNo
Rocker Arm Studs IncludedNo
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Guideplates IncludedNo
Valve Cover Mounting StyleCenterbolt
Accessory Bolt Holes DrilledYes
Intake Valve Angle23
Exhaust Valve Angle23
Valve Guides IncludedYes
Valve Guide MaterialCast iron
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 CrossoverNo
QuantitySold individually.
NotesRequires Vortec-style intake manifold for installation.
CalculatorCompression Calculator
 

These RHS Pro Torker small block Chevy cylinder heads outflow all previously available small block Chevy cast iron cylinder heads. In comparison to the popular GM 906 casting, they flow 27 more cfm at 0.500 in. lift, right out of the box. Made from premium-quality cast iron using RHS' patented Clean Cast Technology, the RHS Pro Torker small block Chevy cylinder heads deliver a competitive edge in racing classes where iron heads are required. The heads come standard with radiused hardened exhaust seats, multi-angled intake seats, and "Fast Burn" 64cc combustion chambers. They are also equipped with 1.550 in. valve spring seats and valve guides engineered to avoid retainer-to-guide clearance issues when used with high-lift camshafts. The RHS Pro Torker small block Chevy cylinder heads have overcome all of the shortcomings normally associated with OEM Vortec heads. So, if you're in the market for superior-performing cast iron cylinder heads, remember that RHS delivers the ultimate in high-quality, high-flow technology with its new Pro Torker small block Chevy cylinder heads.