And so it starts... 340 build

Nope and negative. The knew a couple (2) of fellas that did without issue for a long time. I figured I’d give it a shot and see.

I ran them once and they were adjusted about the same as in your picture. I had them in a 360 with a hydraulic cam much like yours. I didn't make it to 4500 rpm on the dyno before 3 or 4 of them broke. Out they came and 1 piece pushrods in the correct length went in--360 went on to make something like 418 hp or so. Just what I experienced--the rest are in my pushrod length checking drawer. J.Rob