HYDRAULIC LIFTERS CHRY/AMC/JEEP 1966-1991 SET/12
Hydraulic lifters compensate for changes occurring within the valve train.Crane Cams precision made Anti- Pump Up lifters allow the engine to reach its maximum RPM potential (with the correct cam and components). The bleed rate of this lifter is maintained by micro tolerances that prevent pump- up and limiting of full RPM potential. After proper preload has been set, hydraulic lifters seldom need maintenance. Maximum RPM Potential: 6,500 to 7,000 RPM.