Dom...Like others have said already, there's so much BS on this subject it's ridiculous. Do yourself a favor and listen to those of us who have actually run AvGas in our cars and see what our results were. I don't care what it was meant for, the FACT is that it runs great in cars like ours.
I ran it in my 12.5:1 440 for about 3 years...iron headed motor. Lots of miles on the street as well as 1/4 mile passes. It ran great, no better or worse than VP 110 in that motor. The valve seats did not take a beating from it...I know b/c I freshened up the heads when I took them off to replace them w/ Edelbrocks. They're still sitting on my shelf.

There is a local guy at our track that ran a 468" BB chevy, 13:1 w/ 2 stages of nitrous for YEARS on nothing but AvGas. Never hurt anything related to fuel in all the years I've known him. Low 5 sec 1/8 mile car. He's the one that turned me onto it.

Another friend ran it for years in a 496" BB chevy that I built. Solid roller, AFR heads, dominator, etc. 5.60s on a small plate kit in a street legal Chevy S-10 Blazer. No problems w/ that one either.

I am currently running AvGas in my 14+:1 Indy headed 446" motor. Has not been to the track yet, but I've been playing w/ it...runs great.