Shocker 225 SBC CNC
(Sold in Pairs)


The Shocker 225 CNC is the ultimate 23 degree small block Chevy head. It requires no special components. Fully CNC’d runners and chambers designed and ported in the USA. Porting is equivalent to other companies more expensive port work. Flowing over 325 CFM these heads will support big cubic inch and big horse power easily over 725 horsepower. The absolute best CNC value PERIOD.

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  • Pro designed CNC ports/ chambers
  • 225cc Fully CNC ported in the USA Runners and Chambers
  • Ultra-smooth 356-T6 Aluminum Casting
  • 5 angle valve job
  • Angle or straight plug
  • Diamond honed guides
  • Large spring pockets
  • Multiple spring options
  • Assemblies include: 21-4N stainless 1pc swirl polished back cut valves studs and guide plates
  • Machined and Assembled in the USA