Four bolt mains

12swinger said

Both unless you modify it.
You know the answer.
The oil level is so close to the crank, it keeps it from getting whipped up into it.
I Swiss cheesed one with a million holes, to help with the oil that gets trapped.
A crank scraper is probably a better option, along with a properly baffled pan, as that’s what I put on the last 340 I built for a customer. Made by Kevco.

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I have also been thinking about this with oil splash in the rear cylinders . when i downshift from fourth to third and give wot, i get detonation from what i believe is excessive oil . So you say oil also gets trapped on the "wrong" side of the W.tray. Hmm...of course. I have been looking for scrapers , not found any . I have just dropped the pan to baffle it , guess there is more to look at .