Getting 70psi when priming the oil pump. Normal or to high?

[datmony]

Maybe too much prelube blocked up the oil passages?

[woodjeep]

I thought prelube was supposed to dissolve in oil, and I also prelubed the lifters and pushrods and rockers. Also I used this red synthetic stuff..can't remember the name but it seemed pretty pliable, I don't think it would have blocked 40 psi oil

[RenoF250]

The oil pressure during the break in was well above 40 to 50 I saw no issues until I drained the oil right after the break in and it was all silvery...I thought ...that's odd ...my oil pressure remained above 40 during the next several weeks then started dropping...then the clunking started..but didn't put it together until I dropped the pan and took a bearing out...then I went ooohhh..that's where the silver came from...luckily it didn't score the crank and its been fantastic since but I still don't know why I didn't feed the mains and rods but everything else got oil...I miked the bearings when I took them out and they lost 0.010 off them...I still don't know why it happened...I prelubed the crap out of them during install and primed that badboy for weeks. I thought I would have no issues

What were your bearing clearances? What kind of prelube did you use? I really cannot see that plugging the passages, I would think your clearances were too tight.

Mine went right to 70 on prime as well and ran at 70 for quite awhile. Now it is 40psi at idle hot but goes to 70 pretty quick. This was with Lucas SAE30 break-in oil. I never saw any shiny particles in the oil and it has ~1,500 on it now. I used Lucas assembly lube (pretty much thick oil) on everything except the cam. The cam got the Joe Gibbs lube that came with it.