Having some issues adjusting the rocker arms on my 360 magnum engine.

I bought a new hydraulic roller billet core camshaft and the chevy style 3/8 adjustable roller rocker arms. After checking the valve train geometry with the stock pushrods I had, they were found to be too long. After finding the correct length, I ordered the push rods and went to install/adjust the rockers.

My problem is that its like the new pushrods are too short. With the exhaust valve just starting to open, I went to adjust the intake rocker arm and the adjusting nut bottomed out on the rocker before any resistance was felt when spinning the pushrods. There is still excessive clearance there.

This didn't happen when I originally used the adj. pushrod a few days back. I tried installing the stock length pushrod and it was still too long.

The engine has been sitting all winter, do I need to prime up the lifters or anything?

Ideas?

I know that Chebys with hydraulic cams need to have the valve adjusted while the engine is running, at least that's how I've seen it done. But their adjuster is in the center, of the arm, not at the ends like ours...

it takes a very light touch/feel to get it right. spinning the pushrod never worked for me because you can squeeze all of the oil out of the lifters before it feels like there is very much resistance.

They should be pumped up before adjusting. Use a drill and a priming rod. It will take a bit of time but you'll see them all pump up. Then adjust your rockers.

Sorry to see you getting no help. I'll pm you.