the truth/opinions about cams

The main difference , as I see it , between old and new cam grinds is DRIVEABILITY. Old cams with .525 lift were a bear on the street . Just another day for new cams . One other is the advancement of hydrolic roller cams that are much easier on the valve train . the next area is the advance in metaleurgy . finally , the machine work is much more precise . Great time to be a hotrodder . Sorry for the misspelling . Later , Tom