Quote: Fast rate of lift camshafts and too much spring pressure will overide the hydraulic mechanism. Some of the cheaper lifters can't handle it. Keith
That, and of course the less preload you run the noisier they will be. The install instructions that come with Hughes cams even mentions the increase in noise level with the decrease in preload. I run a pretty hefty hyd ( .615 lift ) in my 408 and I run 1/4 turn preload - and it is noisey. At 3/4 turn, it becomes quiet.
That, and of course the less preload you run the noisier they will be. The install instructions that come with Hughes cams even mentions the increase in noise level with the decrease in preload. I run a pretty hefty hyd ( .615 lift ) in my 408 and I run 1/4 turn preload - and it is noisey. At 3/4 turn, it becomes quiet.
