Insurance courses online freeim putting my sbc on the street with some 1/4 action still Im still tossing up wether i should ditch the solid roller for a hydraulic roller Comp has... 2. Performance - The Performance hydraulic lifters are made from a billet body with a clipped axle and have 7000 RPM capability.Clarkrange tn obituariesHYDRAULIC ROLLER LIFTERS. Please click on part number links to view additional images and information. • Cold forged steel body heat treated for exceptional wear resistance. • Precision ground needle roller bearing with high chromium steel axle for long life and minimal friction. • Cold forged extra long piston, precision ground and fitted for controlled leak down and pump up.