Camshaft theory

"tubtar" hit on a lot of valid points.

The general increase in duration is to move the power band higher. As far as lift, head flow will determine how much you need before it becomes counter productive. For a "bracket" style engine and with the amount of off the shelf cams available these days, I have to believe that there's something out there available with a reasonably mild lobe design that will give you good/reliable power. Don't discount a change in rocker ratio if "big lift" is what your engine requires?


P.S. I should have asked, are you trying to cam this for a existing converter/gear, or for engine power and then converter/gearing it to the engine?