@bosswrench posted:Tom, a few decades ago I colluded with a friend who worked for Ford and borrowed eight (8) brand new 351-C oil pressure sending units. I tried them one after another in the garage on a thoroughly warmed up Pantera. I got six (6) different answers and none agreed very closely with the SW- mechanical, which is, like yours, on a Tee fitting back by the bell housing. Its still there after 30 years- bothering nothing & no one.
There's a second threaded oil pressure port above the OEM fuel pump that will give MUCH different results, so pay no attention to data from that spot. It is all but impossible to access on a Pantera, anyway
Useful for installing a safety pressure switch on the control of the electric fuel pump
The plate on the fuel pump opening is temporary, the final one will be "cleaner".