Top fuel cars have a fuel pump shut off valve next to the steering wheel. It leans out the engine enough to kill it at the end of the run.
I built a flatbottom drag boat when i was 22 years old and had more money than brains. After blowing up two motors on methanol, I decided it would be a really good idea to step up to nitro. Someone should have slapped me. Where were you guys then?
After half a season I was broke (and so was the boat) and had 3 credit cards maxxed out and my girlfriend left. But it was cool