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Patriot Performance 2181 - Patriot Performance Freedom Series Small Block Chevy Cylinder Heads

  • Cylinder Heads, Freedom Series, Aluminum, Assembled, 64cc Chamber, 190cc Intake Runner, Chevy, 327, 350, 400
  • Application Specific
  • Estimated Ship Date: 5/29/2012
 
BrandPatriot Performance
Manufacturer's Part Number2181
Part TypeCylinder Heads
Product LinePatriot Performance Freedom Series Small Block Chevy Cylinder Heads
Summit Racing Part NumberPAR-2181
 
Cylinder Head StyleAssembled
Cylinder Head MaterialAluminum
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)64
CNC-Machined Combustion ChamberNo
Intake Runner Volume (cc)190cc
CNC-Machined Intake RunnerNo
CNC-Machined Exhaust RunnerNo
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)0.575 in.
Outside Diameter of Outer Spring (in)1.400 in.
Damper Spring IncludedNo
Retainers IncludedYes
Retainer MaterialSteel
Locks IncludedYes
Lock StyleStock
Valve Stem Seals IncludedYes
Valve Stem Seal StyleUmbrella
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 MaterialBronze
Valve Seats MachinedYes
Valve Seat Machine Style3-angle
Valve Seat MaterialDuctile iron
Steam Holes DrilledNo
Oiling StyleThrough pushrod
Machined for O-RingNo
Heat CrossoverNo
QuantitySold as a pair.
CalculatorCompression Calculator
 

These Patriot Performance Freedom Series small block Chevy cylinder heads offer exceptional quality at an unbelievable price. They are manufactured from high-quality aluminum and assembled with the finest parts. Patriot Performance Freedom Series small block Chevy cylinder heads feature one-piece stainless steel 2.020 in. intake and 1.600 in. exhaust valves, 190cc CNC bowl blended intake runners, and 64cc combustion chamber and hydraulic flat tappet valve springs with steel retainers. The heads include 3/8 in. screw-in rocker arm studs and guideplates for 5/16 in. pushrods. Available in straight or angle plug designs, the Patriot Performance Freedom Series small block Chevy cylinder heads will provide the power that you've been looking for, at the price you want.

Warranty

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