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The Pro MAXX MAXX Series is taking affordable performance cylinder heads to the next level, since there are no comparable cylinder heads available. The all new ProMAXX ultra smooth, Grade A 356-T6 aluminum casting, is CNC machined to create the perfect platform for newly developed runner and chamber designs. This is combined with a 5 angle competition valve job, diamond honed bronze guides, hand bowl blending and professional assembly all performed right here in the United States. ProMAXX MAXX Series cylinder heads produce out of box performance that outperforms anything in it's class.
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ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 170cc - Ford FE Series - 2.090/1.660 - 72 cc

P/N: PMX-FE-72S-9171
  • 356-t6 Aluminum
  • 170CC Intake Runner
  • Hand bowl blended
  • 72cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 170cc - Ford FE Series - 2.090/1.660 - 76 cc

P/N: PMX-FE-76-91716
  • 356-t6 Aluminum
  • 170CC Intake Runner
  • Hand bowl blended
  • 76cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 170cc - Ford FE Series - 2.200/1.730 - 72 cc

P/N: PMX-FFE-72S-9173
  • 356-t6 Aluminum
  • 170CC Intake Runner
  • Hand bowl blended
  • 72cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 170cc - Ford FE Series - 2.200/1.730 - 76 cc

P/N: PMX-FFE-76S-91736
  • 356-t6 Aluminum
  • 170CC Intake Runner
  • Hand bowl blended
  • 76cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 171cc - MOPAR Small Block - 2.020/1.600 - 63 cc

P/N: PMX-SBM-63S-9361
  • 356-t6 Aluminum
  • 171cc Intake Runner
  • Hand bowl blended
  • 63cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 171cc - MOPAR Small Block - 2.020/1.600 - 65 cc

P/N: PMX-SBM-65S-93615
  • 356-t6 Aluminum
  • 171cc Intake Runner
  • Hand bowl blended
  • 65cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 180cc - Ford Windsor - 2.020/1.600 - 60 cc

P/N: PMX-SBF-60S-9175
  • 356-t6 Aluminum
  • 180CC Intake Runner
  • Hand bowl blended
  • 60cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 183cc - Chevrolet Small Block- 2.020/1.600 - 72 cc - Angle Plug

P/N: PMX-SBC-72A-91832
  • 356-t6 Aluminum
  • 183cc Intake Runner
  • Angle Plug
  • Hand bowl blended
  • 72cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 183cc - Chevrolet Small Block- 2.020/1.600 - 72 cc - Straight Plug

P/N: PMX-SBC-72S-91832
  • 356-t6 Aluminum
  • 183cc Intake Runner
  • Straight Plug
  • Hand bowl blended
  • 72cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads - MAXX Series 210cc - MOPAR Big Block - 2.140/1.810 - 84 cc

P/N: PMX-BBM-63S-9440
  • 356-t6 Aluminum
  • 210cc Intake Runner
  • Hand bowl blended
  • 84cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 pc stainless steel valves.