So I forgot something. I've been gettin a lot of oil on the top of my valve cover. I replaced the fill cap and it seemed to get better for a whole now its back. Also part of the reason I thought blow by.

 

How well does the front CCV boot fit? Is it old and cracked/shrunk?

Part of the cause could still be that you need to trim the flutes in your valve cover per my previous write-up.

If you're concerned it's rings, do a dry/wet compression test and post the results.

 

The boot is new, got a new harness etc. I know I need to do the compression test just for curiosity sake but I need an adapter as my tester won't thread into the plug hole, threads aren't long enough. Oh well money is a fairly serious problem this month. Hopefully one of these jobs will come through. Until then I'm dead in the water. My question about the h.v. pump-is it a good idea? In my experience with high performance v8s most professional engine builders I consulted told me to just put a standard pump in for two reasons- h.v. pumps rob horsepower, and they add strain to the driveshaft and gears on the distributor.... Any thoughts?

 

I'm running 2 HV pumps and about to do a 3rd on my stroker.

 

So you would recommend? The other thing about the hv pumps is they do raise pressure by forcing more volume through the same size oil passage. Never really thought about it but I bet you can run thinner oil with the hv pump.

 

Changing pickup tubes with the press fit is a PITA.The HV pump comes with a new tube/screen. Easy.

 

Good point. Doesn't bolt on huh?

 

Nope.

 

Theoretically, until a bypass opens somewhere. The bearings can only flow so much oil...more than that amount shoved at them results in pressure increases.
Your stock pump should already provide more volume than the bearings can pass- if it didn't you'd have no meaningful pressure.
If your motor is badly worn, a high flow pump may bring the pressure back up a bit. Or not, depending on the wear. Outside that there's no real advantage other than not having to swap the old pickup tube in. Which is a credible advantage, lol.

 

And a disadvantage of the HV pump is that sometimes you have to "massage" the oil pan. No big deal.

Know where the HV pump originated?

According to my friend in JeepTech, it was a military specified pump for 4.0s that they used in some application and also had a different oil pan where clearance wasn't an issue. It's not a "performance" part but a mil-spec part.

 

That's kinda where I was goin with that. Bypass doesn't open till like 80psi though... I would think ill be ok. The highest pressure I ever see is 55. Radi I appreciate that input. Ive never used an hv pump and as I said ive actually always been steered clear of them. I don't mind gettin one if cruiser makes their case on this engine. The fact that he is successfully running them on two engines is a good mark