Morel tie-bar performance hydraulic roller lifters for Chevrolet – Stock diameter. Fits most .842″ lifter bore GM applications including LS, LT, SBC. Morel Hydraulic Pre-load Settings – Cast Iron block and Cast Iron Head = .020″ – .025″ Cast Iron block and Aluminum Head = .030″ – .035″ Aluminum block and Aluminum Head = .045″ – .050″
