hyd lifters , what a joke ! i rebuilt a 340 a few years ago with a hyd stick in it , had no luck with getting them adjusted , we used chrysler adjustable rockers and push rods . i went through three cases of johnsons lifters , even called them , got '' they need to bed in '' but they would never seal up the piston at the top , they all kept creeping down , even without a pushrod loaded on them . did a oil pressure test on the lifters themselves in the bores . ran the motor over three time per test , during this rotation all of them pressured up . then on the stop i could see them creep down . did this several times replacing them , even changing bores with them to make sure it wasn't a block issue . but after three cases of johnson's lifters , i purchased sealed power lifters through summit and that closed the lifter issues . so if you like i have cases of johnson hyd lifters i'm selling , i've sold some to guys with regular stamped steel rockers and have had no issues or come backs . these where never broke in or under any loads . just tested under oil pressure .
