Rebuilt magnum 360 Noise

I don't know the lift of the stock Cam, so I don't know how much the new cam would add to the preload. someone here will know. Even if that's not the source of the tick it would be worth correcting.
The stock cam is smaller but hughes makes a cam that has over .500 lift and uses all the same stock stuff as I do. Or is supposed to be able handle it... maybe my lifters just can't handle the lift as well as oem lifters. Idk. I'll have to look into it