These roller wheels track along the lobe of the camshaft. They use lifters that are equipped with roller wheels. Modern lobe profiles also characterize these Comp Cams LSR series hydraulic roller camshafts. This camshaft has a high RPM operation, and it is characterized by high performance. This choice is one of the best as it will offer you value for money. COMP Cams 54-453-11 has many great features that will significantly increase your Chevy 350 performance.