Image 1 of 12
Image 2 of 12
Image 3 of 12
Image 4 of 12
Image 5 of 12
Image 6 of 12
Image 7 of 12
Image 8 of 12
Image 9 of 12
Image 10 of 12
Image 11 of 12
Image 12 of 12
CVO Twin Cam – Stage 3 Cnc Cylinder Heads
.Race-level CNC development using stock castings, designed to extract every ounce of power while maintaining durability and reliability:
Complete disassembly and full inspection of all components
Deep cleaning and media blasting of chambers and ports
Full CNC porting of intake and exhaust runners, optimized for high-lift flow and velocity balance
CNC-machined high-efficiency combustion chambers tailored for max compression and quench control
Precision 4-angle valve job on performance seats
2.100” intake valves / 1.650” exhaust valves
Corrected Seat Geometry As well as CSA / Throat Diameters
Upgraded bronze taper valve guides for superior heat transfer and long-term stability
Premium high-tension beehive valve springs matched for aggressive cam profiles
CNC deck for exact compression control and perfect gasket sealing
Final ultrasonic wash and professional assembly
Result: maximum airflow and combustion efficiency from CVO castings — engineered for race builds and high-compression performance engines.
Note: This is a send-in service for your existing cylinder-head cores.
Customer must ship in clean, rebuildable head cores for this service.
Pricing covers machining and labor only — no cores are supplied or exchanged.
Any additional parts or repairs required beyond the listed service will be quoted separately upon inspection.
.Race-level CNC development using stock castings, designed to extract every ounce of power while maintaining durability and reliability:
Complete disassembly and full inspection of all components
Deep cleaning and media blasting of chambers and ports
Full CNC porting of intake and exhaust runners, optimized for high-lift flow and velocity balance
CNC-machined high-efficiency combustion chambers tailored for max compression and quench control
Precision 4-angle valve job on performance seats
2.100” intake valves / 1.650” exhaust valves
Corrected Seat Geometry As well as CSA / Throat Diameters
Upgraded bronze taper valve guides for superior heat transfer and long-term stability
Premium high-tension beehive valve springs matched for aggressive cam profiles
CNC deck for exact compression control and perfect gasket sealing
Final ultrasonic wash and professional assembly
Result: maximum airflow and combustion efficiency from CVO castings — engineered for race builds and high-compression performance engines.
Note: This is a send-in service for your existing cylinder-head cores.
Customer must ship in clean, rebuildable head cores for this service.
Pricing covers machining and labor only — no cores are supplied or exchanged.
Any additional parts or repairs required beyond the listed service will be quoted separately upon inspection.