LB7 Fuel System Issues - Wagers?

[Chevy1925]

By the trail of new vs old parts, IE those with paint marker numbers vs those without or plum worn out.. This boneyard engine has had the head off once. Has the new Silver Oxide coated head bolts, which was a much later introduction to the GM parts bin. According to my GM professor.
So now question becomes, did it ever hold proper rail pressure after they did head gaskets? Or was CP3 bad when they pulled the heads? Chicken or Egg ??;

Biggest concern now, oil pressure hovering around the 17psi mark warm idle according to the CTS in the truck. Spikes 80+ cold, holds a good 40+ at cruise, but she ain't cracking the piston squirts open at idle. Gonna break out the old analog rig to verify.. And still sucking air somewhere on the suction side of the fuel system.. 48hrs, 5 pumps to fire.

Thinking we rate this one, 5 of 9 lives?

You know that the trucks from factory do not hold 29+ psi at hot idle for the squirters to open, right? Not even my build engine on a melling pump and 20w50 when it was brand new would hold that pressure at idle. Thats tight bearing clearances too.

 

[kidturbo]

You know that the trucks from factory do not hold 29+ psi at hot idle for the squirters to open, right? Not even my build engine on a melling pump and 20w50 when it was brand new would hold that pressure at idle. Thats tight bearing clearances too.

Somewhere I posted a whole breakdown of how GM pads the IC values below 30, until it reaches about 15, you can't land in that range using a POT's to scale the voltage. I wondered, why they no want it to read below 30 PSI? And why they put 27pis checks in the oilers?? Personally I've never seen one carry less than 25 at hot idle true. But what gets me, this one swings 80 hot when ya roll into it. That's a big sweep. Cold morning, was 100+