Gas, I became convinced that a stock crank 406 sbc should not be revved over 5,000rpm. I talked to my brother, who ran one in a low 10 second Nova. Also talked to a close friend and engine expert in Atlanta. Both agree that a 5,500 redline would not be a risk. Even 6,000 is ok as far as they are concerned. That will be enough for me to run the quarter all out.
So, in two weeks I'll find out if I'm capable of winding the engine that tight and not be worried about a 125mph trap speed. Oddly, I have trouble running even a race engine hard. Tend to bably all my stuff. Also, I don't like going fast. What kind of drag racer is that???
It goes 11.11 and 117mph holding it steady the last 300-400 feet. That's leaving at an idle and shifting at 5,000 (or sooner). Lot's of room for improvement. 'Spose I could try the trans brake too.