Lulz....
I was at that race in 83' and 84'.
Yes....Race gas, Golden spectro, and Bel-Ray MC1+ is intoxicating. It gets thick in a pressurized dome though.
Weird thing about the old silverdome.
Because the roof was held up by fans creating higher pressure than outside. Carb jetting was a bitch, and just dropping the needle on the main wasn't enough.
Drop two main sizes and raise the needle all the way up, and most were close, but if the weather outside changed they would either bump up or down the inside pressure as needed, and leave ya pig rich or melting a piston.
Everybody HATED the Silverdome. Heck, there was no suspension set up flexible enough at the time, to deal with the goofy dirt they would bring in, and spray down with chloride to keep the dust down. Loose and rutty to blue groove in the same section. Stuff has come a LONG way!
In a way, things were better then. It was all still new, and still outdoor MX inspired tracks, with higher speeds, and less hang time, so the racing was closer even in traffic.
4-Strokes suck!!!!!!!!!!!!!!