Uses M-6513-BH Beehive style valve springs with machined retainers and machined valve locks. Most hydraulic cams can be used with these springs. 130lbs @ 1.800", 293 lbs. @ 1.200" and CB @ 1.085"
Includes laser cut guide plates M-6566-Z304D for use with 5/16" pushrods and 7/16" rocker studs