MORE VALVE TRAIN QUESTIONS................

I guess I should be more specific. The PR's that I have are brand new and shorter than the OEM's. I got them from the seller and they were supposed to match the rocker gear that I got from him. The pic shows those rods to be a tad taller than they need to be. Was hoping the masses would tell me that I am good to go LOL. So, I made a set of adjustable pushrods to figure out exactly where I at.

The thing that threw me off, was the fittament of the OEM 340 non adjustable rocker gear. Once I bolted THEM down, I had .125 of preload.

So, I tried both set ups...........With the adjustable stuff, I need PRs 7.069 inches plus the preload. And with OEM non adjustable I need 7.4 inches plus the pre load.

Question about pre-load on adjustable gear: So a local engine guy suggested that I go .010 of pre load. Everything I have read suggests .030, or even slightly more. What are the ramifications of changing the preload from say .010 to .040?

Question about pre-load on non-adjustable gear: Comp Cams literature gives a really broad range for this type of set up. They recommend .020-.080. Why would that be different than the the specs for the adjustable gear. What should I shoot for if I go this non adjustable route?

Thanks