Big cam, but I wouldnt expect you to have a problem with the XE-R lobes. Yes, they are aggressive, but I have never come across a case of someone with lifter float. I would think the LSL or XFI lobes might cause it. Usually a lifter decides to take a complete dump before a consistent resonance motion.
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1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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