Yep, that's a 216 style bearing cap. Might be a carry over from an earlier engine. What year is the block you have? The bearings are interchangeable between 216 and 235 on that bearing journal. The only one that's different is the thrust bearing with the flanges on either side.
Here's a pic of that strainer pedestal on my 216 when I adapted a higher capacity oil pump.
Another pic of the difference between 216 and 235 thrust bearings.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.