318 hydraulic lifter preload.

My bad. I shouldn't have responded until the story unfolded. Details were sketchy at first and my original response was because of the unknown. I guess I've been lucky with cams and lifters. I always soaked hydraulics in a coffee can of oil and installed them in the block. Adjustable rockers got adjusted a half turn past zero lash on the base circle. Non adjustable's like our 318's got the rockers and shafts installed and the engine ran.