Performance World 69225 LS1 Cathedral Port (for Gen III LS1/2/6 3.90" bore) Chevrolet 225cc Aluminum Cylinder Heads Pair (bare)

Part # 69225
  • Sale
  • $1,139.98
  • Regular price $1,199.99


LS3 Cathedral Port Chevrolet heads designed to fit Gen III LS1/2/6 3.90" bore engines. 225cc intake runners, 69cc combustion chambers. 2.08" intake and 1.57" exhaust. Machined for 1.55" springs. Raised valve cover rails, 6-bolt per cylinder design (Fits LSX blocks too). Includes rocker arm rails for use with LS3 offset (OE style) rocker arms. SEE SPECIAL TECHNICAL NOTES REGARDING ROCKER ARMS. Manufactured from A356-T6 aluminum. Each pair comes with a detailed flow sheet. Sold bare and ready for assembly. Pair. Download Data here - DOWNLOAD