Shocker 340 BBC CNC
(Sold in Pairs)


The Shocker CNC 340cc BBC is a professional designed cylinder head using the latest CNC porting tools. These heads out flow the competition at a price that cannot be touched. Some comparable heads are double the cost of one Shocker 340 CNC. Flowing over 415 cfm, this head is on top of the heap. Now go out and shock the competition.

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  • 340cc full CNC Intake runner
  • Full CNC exhaust and combustion chamber
  • Ultra-smooth 356-T6 aluminum casting
  • Flows over 415 CFM
  • .750 deck thickness
  • 24° Intake/ 15° Ex valve angle
  • Diamond honed guides
  • CNC’d in the USA
  • Multiple spring options
  • 5 angle valve job
  • Professional Assembly
  • Machined and Assembled in the USA
  • Assemblies include: 21-4N 1pc swirl polished back cut valves, 7/16 studs and guide plates