I second Traveller thoughts - look for some machining or assembly errors.
I rebuild my 428 5 or 6 years back with all clearances double checked.
Oil pressure on startup is always off the gauge and 80 lbs and above at speed.
Only at a very slow idle of 800 and below RPM will it come down to 30-40 lbs.
I have really driven the wheels off the Shelby - high speed and revs on the Autobahn, stoplight GPs and the engine still comes back for more. Its as close to bulletproof as I have ever had.
I do have an
oil cooler in my parts room, but havenŽt even installed it because the are no temp issues.
Oil temp is always below 135 degerees C. I have a 7 1/2 quart Cobra T pan though!
IŽll be installing E-brock heads this weekend, but will do nothing to the lower end.