BB chev numbers

I have 2 BB chev motors that I am trying to ID. The frist one has COF331056 stamped on the pad in front,at the left rear of the block the casting # is 361959,and on the right side is 12875.

The second one is so rusty on the pad that I cant red anything,but at the left rear the casting # is 3989289 and on the right side M10T. The second one has a Q-jet intake,the first has no intake and oval port heads. Both have flex plates.

I looked in my rather genaric HP book and found none of these numbers. I'm sure some one on here has a real book!

 

I'm sure someone must know....
Stick around!...

 

<TABLE border=0 itxtNodeId="37" itxtHarvested="0"><TBODY itxtNodeId="39" itxtHarvested="0"><TR itxtNodeId="87" itxtHarvested="0"><TD width=84 itxtNodeId="135" itxtHarvested="0">361959</TD><TD width=70 itxtNodeId="134" itxtHarvested="0">1973-85</TD><TD width=70 itxtNodeId="133" itxtHarvested="0">454 </TD><TD width=210 itxtNodeId="132" itxtHarvested="0">car & truck</TD></TR></TBODY></TABLE>

2nd one is a misprint. Should be:
<TABLE border=0 itxtNodeId="37" itxtHarvested="0"><TBODY itxtNodeId="39" itxtHarvested="0"><TR itxtNodeId="47" itxtHarvested="0"><TD width=84 itxtNodeId="335" itxtHarvested="0">3999289</TD><TD width=70 itxtNodeId="334" itxtHarvested="0">1972-78</TD><TD width=70 itxtNodeId="333" itxtHarvested="0">454 </TD><TD width=210 itxtNodeId="332" itxtHarvested="0">215, 235, 240, 270, 2 bolt, car & truck</TD></TR></TBODY></TABLE>

 

Thank you! basically if they are 72-up then they will have iron cranks and 2 bolts.Makes them not good for much! I was going to break them into components and hopefully get some pieces I could use,but it looks like I should just get off them. Theyve been sitting in the back of my shop for about 20 yrs now!.