Sure gets annoying when.....................

[SupremeDeluxe]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: napa68</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Day2_69Z</div><div class="ubbcode-body">Hmmmm, a cam bearing noise on the Left Bank ??? Cam bearings are fixed to the bore journal ,centered on the cam ...... Both Banks would have a noise.
Doesn't sound right to me either....

You don't think its a bad Rocker Arm, pivot ball, lock nut or an issue with a Rocker arm Stud ?
A too long or too short pushrod ?
Just my thoughts. .. somewhere on the Left bank you may want to check.
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Right side is a problem too. #5 more than anything. Collapses over 2000 rpm when the oil temp comes up. Go back to idle, pumps back up. Changed out all of the lifters (cam and lifters looked good), the same problem. Oil pressure is well north of 70lbs cold (idle) and is at 50lbs at a hot idle (stock pump and spring) Checked valve springs...............they were new and good. Gotta pull it apart before something gets wrecked. </div></div>

FWIW, I had a HV/HP pump installed in my 67 L-68, installed by engine builder before I got the car, and the oil pressure was exactly what you describe. It would never dive below the 45 psi hash on the gauge at hot idle, and by 2000 RPM the gauge was always pegged. It never caused me any issues, and I drove it that way for thousands of miles.

Feel your pain on the R&amp;R. I had the trans out of mine three times this summer trying to correct internal problems, and it looks like it may be coming out for a 4th.