Anyone use 1.7 ratio rocker arms???

RustyRatRod said
I love learnin too, but "NORMALLY" you run a higher ratio rocker, because you have a camshaft already that you want more lift on. It's not normal practice to choose a higher ratio rocker at the beginning of a build without already having the camshaft. In that instance, you can choose or have ground whatever lift camshaft you want for the 1.5 stock ratio. ........in other words, I wanna know what the advantage is doing it one way over the other if there is one.

There are times when you can’t get the lift you want and still have a lobe with some durability. At that point you use a higher rocker ratio.

As an example if I have .620 (gross) lift and a 1.6 rocker I need a .3875 lobe. For the same lift on a 1.5 rocker you’ll need a .4133 lobe. That bigger lobe won’t have near the life as the smaller lobe with the same diameter lifter.