This Kelford Cam is ideal for use with engines that have bolt-on upgrades such as exhaust, and a computer that can adjust fuel trims. They are designed to shift the powerband slightly higher in the rpm-range where it will be perfect for revving engines higher. Kelford is one of the most respected Cam Manufacturers in the industry today. Based out of Australia, Kelford Dyno and Race proves each part they design. If you have any questions about cam selection or valvetrain, please contact us through one of these methods today: