RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare
RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare
RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare
  • Load image into Gallery viewer, RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare
  • Load image into Gallery viewer, RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare
  • Load image into Gallery viewer, RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare

RHS Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head 260cc Runner / 69cc Chamber - Bare

Regular price
$879.95
Sale price
$879.95
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Pro Action GM LS3 Rectangle Port Aluminium Cylinder Head - Bare

Pro Action™ Rectangle Port Aluminium Cylinder Heads 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

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
  • Designed for any LS3-style street performance application