Johnson Lifters by Crow Cams. At Johnson Lifters we continuously use research and development with tooling and techniques for innovative solutions to the High Performance Automotive Industry; Axle Oiling to accommodate High Spring Pressures, Variable duration to assist with Torque and Vacuum, High Flow push rod seats to keep rocker arms well lubed and Unmatched Metallurgy to assure a long Lifter Life. These are just a few of the innovations we currently offer. What you will find when you get your Johnson Lifters® is not only a sleek, lightweight, valve train component, but a component of the highest American quality you can buy. Throughout our 21 primary processes and 15 secondary processes the lifters are carefully inspected and tested for functionality and cosmetic defects. Take the headache out of searching for high quality lifters, you have found them!