Mowt race cars running dry sumps are pulling more than 1.5 G so that's about a 50° list or more. Roberts suggestion is pretty good, but I don't add any.
In racing you can control momentary oil starvation problems with an Accusump. it's possible to even watch the gauge on the sump to see when oil comes out of it to compensate for lost pressure. They make marine versions for race boats. http://www.accusump.com/
If you have a design flaw that inhibits pickup it won't solve the problem but it will help if there is a momentary issue.