double ugly what bottom end is in your motor?? Ford FE bearings and rods or BBC rods and bearings? If you are running BBC rods and bearings you could drop the
oil pressure to 80 psi. If you are running FE rods and bearing like me, STAY at the 100 psi. John when cold my motor pressure is 125-130 psi, with 15w40
oil. I preoil the motor before starting everytime. This pervents dry starts. When racing hard the
oil pressure is in the 65-70 psi hot. At idle, 25-30 psi. In my 25+ years of cars racing and motor building, I have NEVER SEEN A MOTOR break from TOO MUCH OIL PRESSURE. Is a HPHV pump hard on the disturbutor gear and drive, YES. I ran total of 50+ hours racing at the last 7 Run&Gun and 1/4 mile at E-town. This was with the 452 kit in my shelby block. There was nothing wrong with any of the rod or main bearings. The main bearing where full groove and the rods where the normal 10 under bearings. I wanted more power, this is why I put a 484 kit in my block. Was tired of going to a gun fight with a knife.
I limit my rpms to max 6,500, with the 452 6,200. There is no point reving any higher because you are out of the HP power band and just wasting motor. I am still running the same gear,shaft and oil pump in the new motor. There is no wear problem with the hydro cam I had in the motor. I installed a hydro roller cam in the 484. Will have to wait and see if there is a wear problem with the gear. I also hav oil dripping where the 2 gears meet. I am sure that this lube stops the wear problem. I have a polymer carbon gear I will try with the 498 motor. The plus of the gear in NO metal in the motor. Something everyone should think about. $ 100 gear and no metal shaving?
Where the down side. Use good Oil filters like Frams. If you look up old info you will see the FE motors with 80-100 psi pressure for racing because of the small rod bearing and the heavy loads of the rods and pistons. This is some of the reason the stroker kits are running BBC rods, More bearing surface in width, lighter wieght, and less bearing speed. I am not a pro motor builder by trade. I only build my own motors. I have done a ton of research on this alone. All the best engine builders from the old cobra racing days to the newer motor builders that sell here.
Rick Lake