[blykins]

No worries with "added stress." I use 1.7's on almost everything...cast cores, billet cores, you name it. It's a roller, right?

As for the benefit, it depends on how your heads flow. If they max out at .500" lift for example, then increasing the rocker ratio to get .550" lift may not net you anything at all.

Without a dyno, you may not know if you gain anything, but it wouldn't hurt anything to give it a shot.