So I have a 460 bbf that is basically stock besides a small cam and I need some help from you guys. When its cold i have around 50 psi and all is well. as soon as it warms up it drops to like 10 and the lifters start clickin. so what do you guys think? oil pump? Main bearings? Also since im guna be tearing this thing down a little what do you guys recomend to get some more hps out this thing without spending my life savings? I was thinkin bigger cam maybe....what size is good for a jet?