I agree 100% with Brad, but First, ... BLOCK, BLOCK, BLOCK....... Can it hold the crank where it needs to be to SEAL...after it had an "align bore" ??
>>> POST # 1... >>>> OIL LEAK...........<<<<
I see you addressed this in post #44 , and that's a relief!
A true Align bore corrects the angle of the crank to the bores typically after the bore is done to correct an out of round bore.
The goal is to "re" achieve the 90 degrees. Typically the bore plate corrects to the exhaust side of the block and therefore the crank has to get moved up.
( as I understand it and was explained to me )
If you have a 5 under chain, your block was Align Bored.
You can't put "thicker" bearing half in the block and thinner in the cap to compensate.
For the rear and front oil seals to work that crank has be dead on where it was when new. It will not take much to make it leak.
I have seen 2 Pontiac blocks leak for this same reason ( other reasons too on 1975 and 76 455 blocks) .
Even if you change Blocks, you still should get your final assembly smoked, even if you get it dynoed after.
USA Made smoke machine >>
https://www.amazon.com/AutoLine-Pro-.../dp/B07JVT1NG2
WATCH smoke leak out a Crankshaft seal.( Block was align honed) >>
https://www.youtube.com/watch?v=tObnbOfo_ko