1.5 vs 1.6 rockers

Here's the whole ball of wax with 1.6s or other higher ratio rockers. They are used for one of two things. Putting on a "smallish" cam to give more lift, OR fine tuning such as how some do with 1.5s on one side and 1.6s on the other. Thing is, if you choose the right camshaft to begin with, you won't need a higher ratio rocker.



Close Rusty, but not always. In my case, to get .600 net lift, I had to use a 1.6 rocker. If not, the lobe would have been to aggressive. I'm already 281/255 with a .3875 lobe. I would have needed .414 lobe to get where I'm at with a 1.5 rocker and that would be a mushroom lifter lobe. Maybe. I'd have to call Jim and verify. You may not be able to do that even with a mushroom lifter.