I believe it was a Canton 15-610 with a windage tray. Like I said, it worked great for years until I started pushing more rpm. When I first started getting oil in my tank I switched the draw location from the front of the valve cover to the top. That helped a lot but still got a 1/3 of a cup of oil every pass. Never got a drop running on the street or during the 20ish pulls we made on the dyno so I did a little test. I put a 90 degree elbow in the valve cover at the base with a foot of clear hose. We threw it on the pump and made a pull to 8,200. Everything was fine until the rpm went above 7k. It was filling the covers up! It's a Dart SHP block and so it doesn't come machined for restrictors, we'll drill and tap our own. If the oil level still gets high (shouldn't), I'll just run drain lines from the heads to the pan to help.Interesting... I have an 8 quart Canton Road Race pan on my 306. I run 7 quarts in it. It shows one quart low on the factory dipstick. Have run the pan for decades, but have also run the oil restrictor kits Price Motorsport Engineering use to sell. Also only shift at 6800 rpm. Never an issue.
However... The upcoming 363 will rev a bit higher... probably at least 7500 rpm, so I'd be interested in any experience or words of wisdom you'd like to share. Which Canton pan are you running?