1.5 vs 1.6 rockers

RustyRatRod said

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.

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This is mainly why I bought some 1.6 rockers. That and I found a couple sets at a price I couldn’t turn down. I ran several of Jim’s cams (racer brown) and they seemed to really like a 1.6 on the intake side but then again most of those cams were under .550 lift. My 422 Indy engine assembly came with 1.6 ratio rockers that are in use now but I plan on upgrading over the winter to some 1.6 T&D rockers I bought from a guy when his engine exploded on the dyno.