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You are here: Home > Cylinder Heads > ProMAXX Cylinder Heads > Series One


ProMAXX took their 100% CNC ported intake and exhaust runners and made them into an “As-Cast” version. What this does is offer a high flowing head at a great price. ProMAXX Series One heads come standard with a 5 angle valve job, hardened seats, and bronze guides.

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ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One 185cc_Vortec Cast Iron_Angle Plug_64cc

P/N: PMX-SBC-72S-2151
  • Cast Iron
  • 185 CC Intake Runner
  • Dual Intake and Valve Cover Patterns
  • 64cc Combustion Chamber
  • Angle Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves
 more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_185cc_Angle Plug_64cc

P/N: PMX-SBC-64A-2168
  • 185 CC Intake Runner
  • 64cc Combustion Chamber
  • Angle Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_185cc_Angle Plug_72cc

P/N: PMX-SBC-72A-2170
  • 185 CC Intake Runner
  • 72cc Combustion Chamber
  • Angle Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_185cc_Straight Plug_64cc

P/N: PMX-SBC-64S-2169
  • 185 CC Intake Runner
  • 64cc Combustion Chamber
  • Straight Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_185cc_Straight Plug_72cc

P/N: PMX-SBC-72S-2171
  • 185 CC Intake Runner
  • 72cc Combustion Chamber
  • Straight Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_190cc_Angle Plug_64cc

P/N: PMX-SBC-64A-2180
  • 190 CC Intake Runner
  • 64cc Combustion Chamber
  • Angle Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_190cc_Angle Plug_72cc

P/N: PMX-SBC-72A-2182
  • 190 CC Intake Runner
  • 72cc Combustion Chamber
  • Angle Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_190cc_Straight Plug_64cc

P/N: PMX-SBC-64S-2181
  • 190 CC Intake Runner
  • 64cc Combustion Chamber
  • Straight Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_190cc_Straight Plug_72cc

P/N: PMX-SBC-64S-2183
  • 190 CC Intake Runner
  • 72cc Combustion Chamber
  • Straight Plug
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Ford Windsor_Series One_175cc_60cc

P/N: PMX-SBF-60S-1102
  • 175 CC Intake Runner
  • 60cc Combustion Chamber
  • .375 Screw-in Studs
  • Adjustable Guide Plates
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves more info