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GM Performance 12529093 - GM Performance Vortec Cylinder Heads

  • Cylinder Head, Cast Iron, Bare, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Each
  • Application Specific
  • Estimated Ship Date: 2/20/2012
 
BrandGM Performance
Manufacturer's Part Number12529093
Part TypeCylinder Heads
Product LineGM Performance Vortec Cylinder Heads
Summit Racing Part NumberNAL-12529093
 
Cylinder Head StyleBare
Cylinder Head MaterialCast iron
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)64
CNC-Machined Combustion ChamberNo
Intake Runner Volume (cc)170cc
CNC-Machined Intake RunnerNo
CNC-Machined Exhaust RunnerNo
Combustion Chamber StyleOpen chamber
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
Accessory Bolt Holes DrilledYes
Valve Guides IncludedNo
Valve Seats MachinedNo
Steam Holes DrilledNo
Oiling StyleThrough pushrod
Machined for O-RingNo
Heat CrossoverNo
QuantitySold individually.
NotesRequires Vortec-style intake manifold for installation.
CalculatorCompression Calculator
 

These cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 HP increase over earlier cast iron small block heads. Features include 64cc fast burn combustion chambers, 170cc intake runners, and a high-velocity LT1 port design. They require the use of a Vortec-style intake and self-aligning rocker arms, and come complete with 1.94 in. intake/1.50 in. exhaust valves, springs, and retainers.

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