Block number is a 41 per the decoder; 216
Can't read the gearbox number quite yet.
Head cover looks like a 216 as well.
About to see if I can get this to break loose with ATF-Acetone but as I read more I see that the rods are Babbitt and "aimed" oilers.
So question - assuming this needs a full
Monty rebuild - is it impossible for DIY?
I'm used to MG and DeSoto engines with standard bearing shells.
I read someone used to use jigs to ensure oilers remained aimed properly. Oh and some scary words along the way about thrust settings.
I have started to look at 235 options as well but I'd love to ring what I brung if it's not a dead artisan only engine.
Also any educational resources for this 216 task?

1946 Chevy 3/4-ton
"Let's the games begin"
Story in the DITY Gallery
What if the Hokey Pokey really is what its all about?