Both Dr.Caldwell Esselstyn and Dr. John McDougall have had phenomenal results with heart disease patients by reversing blocked arteries through diet alone (Dr. Dean Ornish has as well). You can google them and see if that helps. They promote a low-fat vegan diet. It is not raw, but can be adapted to raw by eating more fruit. On VegSource.com you can see both Dr. McDougall's posting board and Dr. Doug Graham's posting board where Dr. Graham promotes a raw diet called 80/10/10 where you get 80% cal. from carb, 10% from protein and 10% from fat.

Hope that helps.