Crate engine rev limiter. Ramjet350.

[Smokintire70]

I've noticed when doing a burnout in my truck that my trucks motor hits valve float and then a couple of hundred RPMs later it hits rev limiter. It says don't go past 5200k but it's rev limiter is above 6k I never meant to get it that high but I heard it hit valve float and the rpm soared, and then it hit the chip. Anyone know the revoimiter on the ramjet 350?