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You are here: Home > Cylinder Heads > ProMAXX Cylinder Heads > Chevrolet _ Big Block
All 427 through 502 Big Block Engines
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ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Big Block_Shocker CNC_340cc_2.300/1.880_121cc

PN: PMX-9340-000
  • 356-t6 Aluminum
  • 340cc Intake Runner
  • Hand bowl blended
  • 121cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves
more info
ProMAXX Cylinder Heads
ProMAXX Cylinder Heads_Chevrolet Big Block_Shocker CNC_370cc_2.300/1.880_121 cc

P/N: PMX-9370-000
  • 356-t6 Aluminum
  • 370cc Intake Runner
  • Hand bowl blended
  • 121cc Combustion Chamber
Assembled heads feature 21-4N, back cut swirl polished, 1 piece stainless steel valves.
more info