RWA 1472 2.3L Type B Valve Spring Set, single spring with inner flat dampner. For use with mechanical cams using .100 longer valves up to .584 lift. Installed 1.687″ @ 90 lbs. and Coil Binds @ 1.0″. WILL NOT WORK WITH STAGE 3 ROLLER CAM! use our RWA 1473 Type C springs for this cam.