Inliners International Forums General Discussion Engines Is there any reason not to use a stock cam?

Measure the lift on your stock cam, ALL lobes. If they differ, the cam lobes are worn (not necessarily visibly worn), and then there is no point in using THAT cam. I have a rule, if a stock cam EVER needs to come out, there is no point in putting it back in, ever. As others have already mentioned, you can get a more modern grind that can offer better mileage. You'd need to get a set of new lifters to match and break the cam in properly. Costs maybe $200 and no other changes are needed with a very mild "optimized" cam.