Cylinder Head Innovations

Delivering world-class cylinder heads & manifolds
for over 50 years of racing heritage

In 2009, Neville and Scott purchased C.H.I (Cylinder Head Innovations). Building on a strong foundation of more than 50 years of engine building, reconditioning, and machining experience, they have grown C.H.I into a leading supplier of specialized cylinder heads and manifolds for almost every form of professional V8 racing, including circuit racing, drag racing, speedway, burnout categories, and a wide range of muscle car and street-performance applications.

Neville’s involvement in the industry began in 1972 when he founded HeadCraft, an automotive machining and cylinder head porting business where he developed early flow- bench technology to support performance improvements. After selling HeadCraft, he established ProHeads in 1986, again specialising in performance machining and cylinder head development. Scott joined him in 1992, helping expand the business and further refine their performance capabilities. Neville also competed in motorsport from the mid-1970s through the early 1980s, racing first in an EH Sports Sedan and later in a HQ Sports Sedan. This long history of hands-on racing and engine development laid the foundation for his passion for high-performance and motorsport-focused engineering.

Scott’s racing began in go-karts, progressed through Formula Ford, and later included the Konica Series V8 Supercars and the Australian NASCAR Series. Together, Neville and Scott bring extensive motorsport experience that continues to influence the direction and performance focus of C.H.I today. Scott heads the engineering and design team at C.H.I, applying decades of hands-on experience in cylinder head development and performance machining. Throughout the evolution of C.H.I products, he has collaborated closely with respected cylinder head, manifold, and engine performance specialists from around the world. This collaborative approach has seen contributions from industry leaders such as Jon Kaase, Dave Storlien, Phil Martin, Leon Withnell, and Andrew Kostecki, each bringing unique expertise that has helped shape and refine C.H.I’s product range.

These combined efforts have contributed to C.H.I achieving outstanding results in high-level engine performance competitions, including multiple years of dominance in the U.S. Engine Masters Challenge. The proven performance of C.H.I cylinder heads and manifolds has made them a preferred choice for professional engine builders and race teams throughout Australia, the United States, and around the world. C.H.I cylinder heads are proudly Australian made, with all manufacturing carried out in- house. We source our castings locally to maintain strict material quality and consistency. To complement this, we use only premium components from trusted suppliers, including springs and retainers from the United States and valves from Argentina. This approach ensures every C.H.I product meets the highest standards of performance and durability.

To support this level of quality control, C.H.I operates a fully equipped manufacturing facility where the majority of machining and development processes are completed on site. The workshop houses multiple 5-axis and 4-axis CNC machining centres, a Mori Seiki twin- spindle twin-turret CNC lathe, Serdi valve-seat machinery, a Faro Arm CMM digitizer, a SuperFlow SF-600 flow bench, and a DTS4000G engine dynamometer within a controlled- environment cell. These resources allow C.H.I to maintain precise control over accuracy, consistency, and performance across its entire product range.