I don't see a stock/oe engine blowing an oil filter. Sorry.
I saw a comment a few posts back about 10w-40 being detrimental to a slant. Does anyone care to elaborate on that? I was running 10-40 trop-artic in mine.
When I used to race 455 Buicks we had oil pump drive issue when 20w/50 oil was used as the oil was too viscous for the 455's relatively delicate oil pump shaft. We would combat this by ensuring a minimization of internal leaks, (wide bearing clearances), and by running 5w/30 oil in our applications.
On my racing slants that we prep for the flying mile we also run thinner oil, (30w) and keep an eye on the distributor gear. I also smoothed as many oil journals as possible and run a cam button. We do not run a high volume pump and limit our rpm to 5,900. We are boosted so we don't need the same revs as a hyperpak would.