When I had my motor built by RHS (Racing Head Service) out of Tenn. they asked if I had an Edelbrock carb. They told me to be careful if I did. They said those carbs tend to dump fuel, which wahses the cyliner walls clean of oil, which can lead to cylinder wall scoring, and ring failure. They are the ones that build race motors, so I took their advice. Then again, I was running a Holley carb, so I didn't have to worry. This was 5+ years ago, and the Edelbrock carb was new to the market. Maybe they corrected the problem by now.