Description DEF Racing Stage 3 Valve Train Package: Unleash your engine’s potential with this powerhouse kit, featuring a custom camshaft, oversized 1mm high flow valves, and a premium Kibblewhite valve spring kit. Perfectly paired, the cam and oversized valves deliver unmatched mid-range and top-end power. Dominate the vintage class competition with this ultimate racing solution designed for maximum power output! Camshaft core is included; no core return required nor accepted Product Features: Camshaft: Upgrades the cam to a needle roller bearing on the journal where it rests in the head. Hard-welded from a new OEM Honda core and precisely ground on a CNC machine. Cam Specifications: Exhaust: Max Lift .430″, Duration @.040″ 273° Intake: Max Lift .433″, Duration @.040″ 274° Steel Exhaust Valve: Increased diameter to 26mm ( 1.0 mm larger) Valve Stem Size: OEM size of 5.5mm, ensuring compatibility Steel Intake Valve: Increased diameter to 31mm ( 1.0 mm larger) Valve Stem Size: OEM size of 5.5mm, ensuring compatibility Material: Made in the USA from high-quality steel for strength and longevity Compatibility: Cam timing was engineered specifically to prevent interference of the larger valves during overlap No head or valve cover modifications needed Works with standard seats and guides; however, seats must be machined 1mm larger to fit the oversized valves Durability: Built to handle the demands of competitive racing For best results, pair this valve train package with a properly ported head to unlock its full potential. Related