RHS® Pro Elite™ CNC-Port 6-Bolt Cylinder Head for GM LS3 Engines 263cc Runner / 68cc Chamber - Assembled

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$1,595.00
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$1,595.00
Regular price
$1,711.00
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Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head - Assembled w/ .660" Lift Springs & Steel Retainers

Pro Action™ GM LS3 Rectangle Port Aluminium Cylinder Head - Assembled w/ .660" Lift Springs & Steel Retainers are a premium LS3 replacement head, ensuring great power on any performance or stock engine build. 

  • Standard 15 Degree LS valve angle
  • 260cc Intake Runner
  • 69cc Chamber
  • Sold Individually 
 
SKU 54530-05HCS

Pro Action™ GM LS3 Rectangle Port Aluminium Cylinder Heads feature:

  • Same architecture as factory head - all stock components will fit without issue
  • Factory correct intake manifold alignment slots avoid power robbing misalignment
  • Manufactured with premium materials and machined to industry's tightest tolerances
  • Premium bronze/manganese valve guides for long wear with particular emphasis placed on holding precision tolerances on valve seat concentricity, allowing valve to seal securely for more power
  • Clean Cast Technology eliminates casting laws and promotes a smoother internal surface finish for greater air and coolant flow
  • Dual seat spark plug pocket design allows both factory style tapered seat spark plugs and flat seat style plugs in wider heat ranges
  • .660" Lift springs allow for higher lift cams and increased RPM
  • Designed for any LS3-style street performance application