6th Feb 2013, 09:54

The 400 (like all the Cleveland engines) uses large main-bearing caps, allowing 4-bolt attachment on some engines. The oiling sequence does not route the oil supply to the main bearings first. Many people still think the bearings were too small, and sometimes they would spurt a leak as a result. It's not a huge deal, but it can be annoying.

6th Feb 2013, 23:43

The engine light being on could also be because your engine is overheating. Low oil pressure sometimes can't be felt unless it's very, very low. This is why I'd rather have gauges than idiot lights, because you never know what is going on in real time with the car, until something blows up. I am going to install aftermarket gauges in my 78 soon, just to be safe.