more than likely you may have a 55.80mhz oscillator in the warp engine.
No. I don't have a Warp Engine, but a Blizzard 1230 MK4, and these are exactly 50 Mhz.
A 50 mhz '030 on a Blizzard 1230 MK4 will simply give you 50 million clock cycles. My speed testing software (for measuring the speed of a routine, or even individual instructions) clearly shows this. SysInfo isn't accurate here, and I think this is a known fact.