Aight guys, got a little problem here.

The block I have has these #s. I've been to every block casting site, suffix site, all that. But maybe someone here knows. This is just a block nothing else. No heads, crank, pistons, etc.

The casting # on back of block is # 3914660( it is a 68' 327ci 2 bolt main)
Ok thats good, I know its a 2 bolt main, but its been bored before but not honed. The cylinder bores measure 4.027" all of them the same. Guess the finish hone is .003" ???

Aight 2 #'s stamped on the block in front of passenger side head

From left to right

First # 7193214 Second # TO6181HH


Now in the second # the second digit or letter could be a O or a zero, and the last 3 digits or letters I realize could be a 1HH or a THH or IHH? But according to suffix codes it could only be a 1969 350 fullsize/TH400 or THH
(1971 307/fwrdcab /c2500?)????? I have no clue. Ill try to get pics posted as soon as I can. Thanks for the help.