I've been running an 11.2:1 440/496 Wedge for over 3000 street miles. I have a basic 440 Source package with Stealth CNC ported heads. The cam is a Comp Cams .575 street roller. I run it on 92 or 93 where available. At the track I'll mix in some 112 octane from the race car just to be safe. No pinging at all. This is pretty much a street car with track visits a couple of times per year. Best ET so far is 11.04 @ 122...through the 3" exhaust, and with tail pipes. Heading to the track in early June for a rental, but my son will be driving it for the first time. He's 100lbs lighter than me. Hoping for the elusive 10 second slip.