XCFM LS3 Cylinder Head CNC Package

XCFM CNC LS3 (821, 823, 5364) Cylinder Head Porting Customer-Supplied Heads Our LS3 CNC porting services are designed to deliver measurable airflow improvements with professional machining and race-proven options. Choose from multiple package levels based on how complete you want your cylinder heads finished. All work is performed in-house on customer-supplied LS3 castings. 🔹 Flow Series — CNC Only (Bare Heads) $650 Entry-level CNC porting service for customers supplying bare cylinder heads only. Includes: CNC porting on bare LS3 heads Notes: Heads must be fully stripped No disassembly, machining, or assembly included 🔹 Flow Plus Series — CNC + Teardown $800 Ideal for customers sending in assembled heads who want CNC porting and professional reassembly. Includes: Disassembly CNC porting Reassembly 🔹 Track Series — CNC + Valvetrain Package $1,250 A complete performance-oriented package for street/strip and track applications. Includes: Disassembly CNC porting