oil pressure issues.. help!!

[mattr90]

ok i have a 89 gt and i had an older non HO 302 and one day it had no oil pressure. soo then i put a 91 302 HO in it and then the oil pump froze and the oil pump drive rod snapped. i tore the engine down and replaced the rod and main bearings put a b303 cam in. put it back together drove about 2miles and when i got home i noticed no oil pressure took the distributor out and the drive rod snapped again.....What the hell should i do??

 

[1987stangman]

Even though there is a screen on the oil pickup tube, small amounts of dirt/grit can work up through it and if even a small amount get's in that oil pump it can lock it up. Had it happen long time ago to me.