When a Hemi is tuned right, they rev very quickly. You won't catch it in time with your right foot....Doesn't matter the hp either. Valve float in a Hemi means two valves just hit, and took the head off one of them that just launched thru the rest of the engine...Its not like a wedge. When a Hemi floats the valves, its over with right there....Big mess.....No second chance.

A rev limiter set low enough is critical with one of these engines.