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Tipping the lifter bank to bank would require a different camshaft core.
tipping the lifter front to back would require and adjustment in the grinding head. Same core.
Factory hydraulic roller lifters using the spider set-up are all done by 6,500
. Actually, the shorter lighter OEM hydraulic roller lifters have more RPMs capability easier than the longer heavier retro-fit lifters weighed down by heavy tiebars...:
