Manley Valve - Exhaust, Valve-BBC S/D 1.900 NA and road race) where engine

and road race) where engine deflection needs to be eliminated

Pontiac G8

slower reaction times

We are especially proud to introduce our own ultra-premium springs built from CrSi wire and featuring 530 lb/in front and 130 lb/in linear rates

Manley pushrods provide the confidence and reliability serious engine builders expect

Manley Valve - Exhaust, Valve-BBC S/D 1.900 NA and road race) where engineManley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just