anyone know how hot is hot and how high is high with regard to the original gauges on a 68? just wondering ballpark figures if anyone knows. how hot is the tepm when it is on H and how high is the oil pressure when it is also on H? thanks.

 

I don't think you'll get a definite answer, after 41 years I doubt any 2 read the same.

Best bet is to get a thermometer and get it to varying levels of hot and note the temp that corresponds to the position of your gauge. For oil pressure, tap in a good gauge that you know is accurate and repeat the process.