Whiplash cams

BTW, Dodge74, if you have the 1.6 magnum rocker ratios, you are ahead of the game; that gives better lift-to-duration ratios. You can get more lift with a given duration, or the same lift with less duration; those enable better low end torque and economy naturally.

It sure took Mopar a long time to catch up and get past the old 1.5 rocker ratio. Ford had a 1.73 rocker ratio in the 351C in 1970.....