Quote:so, then...Stock Hp Mopar resto camshaft with .450/.458 will convert in to:.450/1.5=.300x1.6=.480.458/1.5=.3053x1.6=.48853new resto cam will be:268/284 dur with .480/.48853 liftand the 474 MP cam.474/1.5=316x1.6=.5056new 474 cam will be:280 dur with .5056 lift