FBO plate over advancing

If you have ever read "Old Reliable The Practical 440 Race Motor" by Don Dulmage, he tells in depth about how to remove and modify the distributor governors. He was a big fan, because of the basically zero cost involved. He was a true innovator of how to build a budget race engine. If you follow his 440 recipe, you will have an honest 500HP 440 on a shoestring.