IIRC I was quite surprised at how hard it was to turn the crank when I first installed the rope seal, as mentioned below. The rope seals are weird things for someone not used to them, as I was not.
I will try taking them out and seeing if there still is a problem
also the oil tube is not installed

Any chance the bearing caps got switched or did you swap one from another engine and the block needs to be line bored?
I am still using the same caps from the original block and I am sure they are in the same order as when disassembled
You said the clearances were OK in the offending spots but is there any chance perhaps a wrong bearing half shell somehow got put in a box or mixed in the set?
they each came in separate packaging as pairs and are all different widths so in short no they cant possibly be mixed up
Is there any kind of debris under a bearing shell that would act as a shim? I believe I got them pretty dang clean but I will definitely go back and re clean them- thanks for the sugggestion.
No suggestions as to the clunk other than possibly endplay is excessive and crank is shifting while you turn it or to look carefully and see if a counterweight has any new shiny spots from hitting something. If the oil fill tube is inserted incorrectly a counterweight can hit the baffle but think that would be a more metallic tinny sound rather than a clunk.
I have a bare block so its not hitting anything, but it is possible that it has excessive endplay.

will do

I have a 1948 super eight sedan that I am currently rebuilding the engine for. I am currently trying to reinstall the crankshaft. however whenever I put the main caps on and tighten them the crankshaft binds and wont turn without excessive force. I have determined that it is only the 2 closest to the transmission side that bind (I have the engine with 5 mains) I have checked the clearances and they all check out. the only work I have had done is I had a machine shop grind the crank down .010" on both main and rods. I have bought the same oversize bearings from kanter (.010") as well. i also have plenty of assembly lube on everything. does anyone have any ideas as to what might be going on? also, i find that when the caps are off and i turn the engine it will make a clunk sound when it gets to the same point as where i had initially torqued down the caps and found it would bind. not sure if this is related or even an issue.

Hi guys I have a question. When servicing the transmission on my 1948 Super Eight what fluid should I use? Some places it says SAE 90 mineral gear oil and other manuals say SAE 140 mineral gear oil

Or if anyone has the mixing formula that would be awesome as well

Hey, does anyone know where I can buy some of the original color grey paint used on the 48 super eight’s 327 engine?

Does anybody know where I can find a used fuel tank for a 1948 Super Eight?

Oh, I see now. The thing I thought was a pin was the ear I need to bend back. Thank you for all y’all’s help and I’ll let ya know how it goes

Hello. Does anyone know how to take the timing chain off of a 327? The only thing I can think of is there is a little pin holding a 1.5” nut on the camshaft gear. Would I have to pull that out? If so does anyone have any suggestions on how to pull it out; it is stuck in there pretty good.