Got my cam broke in. The oil gauge in my 76 Freespirit is reading at 3/4. Is this good, bad, normal? I do not have an actual gauge to test it. Is there set pressure associated with the 1/4, 1/2, and 3/4 mark on the gauge?
No way to tell at all. There are 60 psi senders and 80 psi senders. 3/4 on the gauge might mean 45 or it might mean 60. I have an Autometer mechanical gauge and the stock gauge hooked up. By comparing them, I can see I have an 80 psi sender.
Run it.you want to see what it’s at hot in gear. Gauge is probably 45 psi as mentioned. So it’s pretty decent so far.
3/4 probably good but I would get a gauge if worried about it but I can tell you from my experience with this motor it can have 5 lbs at idle and work just fine.
Stock location, same place the stock oil pressure sender screws into. I used a brass fitting tee to run both gauges. https://www.v8buick.com/index.php?threads/gauges.197307/ There are a number of ways to do that. Above is one way to run an idiot light sender and mechanical gauge.
