I’m not familiar with the oil system on that engine but I can tell you what I learned from running an oil temperature gauge on several big blocks for lots of miles. I drilled and tapped the drain plug for a sender to an electric Stewart Warner gauge , first on a Cal2, then on a’99 Special Sport. It took an average of thirty miles for the sump oil to stabilize, then it would fluctuate a little, maybe ten degrees,from there according to how I ran it. On days that the ambient temperature was over 80F or so, it would stabilize in about 20 miles. I had a hard time getting it up to 220F but on hot days with higher speeds it would get there. I think the hottest I ever saw was 230.I was hoping to cook the condensation out but it mostly ran too cold for that so I tried to run it thirty miles whenever I started it.Then out of curiosity I was going to put cylinder head temp gauges on but I realized that I was distracting myself too much, watching gauges. Now I just run reliable idiot lights and a voltmeter. I thought the oil pressure light should be labeled “ replace main bearings “ but never had an oil pressure problem. Hope this helps.
