Stock 440 cam specs

Most big block 4 bbl. cars had a 256* duration cam, the HP versions 276* and the 440-6 had a low taper 276,*lift varied from .425 to .458. In the old days we use to refer to a hp cam as a 3/4 cam, meaning duration over 270*, this is the beginning of the radical idle, so if you want something relatively smooth stay under 270*.