Re: Ford FE 427 Low oil pressure
Hmmm I thought the guys on CC would have nailed this down for ya. One thing that comes to mind is the Nascar crank. Does it have screw in plugs or press in plugs with the snap rings? Being it's a crossdrilled crank it does retain some pressure and could be a source for a loose or weeping plug and a loss of pressure if so. The OEM fit on the press in plugs was horrible and later changed to screw in style. I see some ref to press in plugs in the old OHO newsletter. I'd be all over that as it;s easy to check. There are two types of rod bearings. Blue and Red. 2.5907-2.5911 for the red and 2.5911-2.5915 for the blue. I see both of these on ebay from time to time and are only for std size cranks. There were no undersize NASCAR bearings for those cranks. That said you can have the tangs in the rods re cut on the opposite side to accept std FE bearings. Guys have done that with good results. There was no difference between the solid and hyd lifter SO blocks other than the hyd lifter passages being drilled on the 68 and later blocks. You should be able to see the relief valve inside the block with the pan off. Might be hard but doable. IIRC you are running syn oil right? Go back to a good dino oil like Valvoline VR1. So who built this engine and what rod bearings did he use?