so you fitted (like for like) stock repro' hydraulic roller lifters or swapped to stock repro' hydraulic flat tappet lifters? going from one to the other is a big difference.
Stock repro lifters. Engine originally came with a hydraulic roller cam and lifters. I put a hydraulic roller cam from Oregon Cams in it with the original lifters. Replaced them with the new Melling roller lifters.
