What pushrods?
I was going to use the cam you have but I was concerned about valve spring coil bind. Magnum heads can only take .525" lift without machining the spring pockets. The 1.6 ratio rockers on the magnum heads that make the difference. I bought the XE262H cam with less lift. (.462-.470) or
.493-.501 with the 1.6 rockers. The 7.625" pushrods should work.(I hope they do, that's what I bought) Mike