He learned the hard way.you don,t build a 13.5:1 compression, super charged engine designed for alcohol , and dump a 80% nitro fuel mix in it,
thats just having no idea about the different pressure curves and burn characteristics, if it was an 8:1 compression engine,
with a super charger and he dumped that nitro fuel it may have allowed the engine to survive a few runs making killer power
https://www.topspeedparts.com/blogs/news/fuel-comparision
http://www.smokemup.com/tech/fuels.php
https://www.enginebuildermag.com/2018/01/fuel-mixtures-drag-racing-engines/