I have the Morell hydraulic lifters. I have seen on other sites where some say it depends on the rate of lift on the ramps. Too aggressive and it can hurt the lifter. I can see this if the body would come in contact with the lobe but otherwise I don't see why it would hurt them.

"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.