If I read the posts correctly, I sincerely doubt that your problem is the oil filter, as it only shows on right hand turns as per your post.
Having run hundred of laps on dirt tracks, and autocross tracks with only Stratostreak Pontiac V8s, they do have a tendency to starve on right handed corners, left handed corners aren't usually a problem with just a factory baffled Pontiac pan. This is with a plain jane stock type filter for over 3 years on the same bearings in a large journal 428 engine. If your bypass valve isn't blocked, the filter isn't going to be a source of starving the bearings.
Of all the street and race engines that operate in the worst possible environment (dirt track), I've never blocked any of my by pass valves on any Pontiac engine.
The easy band aid is an accusump to cover when the pickup sucks air. IMO, a more permanent solution is going to be either build/improve the better pan yourself, or have one of the specialty manufacturers build you a better pan than your Canton.
The late Smokey Yunick did calculations, and to have no restriction and be able to block your oil by pass valve in a race engine running at high RPM it would take 4, 1 foot long oil filter canisters, so plan accordingly, or leave the by pass valve operative.......
