360 oiling sytem help?

I have a 91 roller 360 block and it oils the valve train through the block up to the rocker shaft. It also has the ability to oil through the pushrods if you get hollow ones. The hyd lifters have oil holes to do that. You cannot run LA heads on a roller block that doesn't have the oil hole drilled up to the head to lube the rocker shaft. Oil coming up through the pushrods isn't sufficient enough to lube the rockers on their shaft. Running magnum heads on a LA block is okay with a simple hollow lifter/pushrod change because the rockers are a pedestal type and are designed to be oiled through the pushrod.

Your solid pushrods are fine. In fact, if they were hollow, you'd have a lot of oil in the top end, more than you need.

Also, AMC lifters and hollow pushrods are for a magnum head on a LA block conversion, and are for flat tappet cams. The OP has a late LA roller block that can accept any type of head. Although, if a magnum head is bolted on, it's wise to tap and plug the oiling holes in the block so there isn't any concern for leaks at the head gasket.