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Where can I find a roller cam for my 460 automatic trailer puller? It seems I could make some wicked torque at low rpms with some of the roller profiles in DD. Moe
I think normally it would but the roller allows for much steeper ramps which helps all around. I'm sure someone can explain this much better than I. Moe
Lift does not mean worse mileage. It does mean more power, you are making the engine more effecient. Its all about letting the engine breath, if anything you will increase your mileage provided you don't change your driving habits. But most of the time we get worse mileage because we tend to stomp on it.
The reason you don't see the factory do this is because of reliability. More lift means means more strain on the valve train components.