Help with bolt location on Trans (85 K10)

[Serge627]

Gents,

I recently picked up an 85 K10 and after going over it have found its a basket case, however I am working through it and straightening things out. This is my first Chevy Truck, so I saw this and thought it looked a bit odd.
I believe it is a TH700-R4 tranny and the engine decodes to a 72 307

Anyhow here is my question. On the pic below you see some labels (hopefully they are big enough to read lol)
There were two bolts on the bell housing that were VERY loose, I tightened the one up and the other will not fully tighten. There are also two missing bolts, one appears in the pic the other is exact same spot, opposite side. My question is, are the two that were loose supposed to be in those spots, or were they supposed to go where the two missing are when this eng/trans was put in, however long ago that may have been. Like I said its a basket case, but I got it cheap and its fun!
BTW the one I marked oil pan is the trans fluid pan, sorry.

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[RetroC10Sport]

Just your torque converter cover. Leave it off if you want. I wouldn't worry too much about it as long as at least 2 bolts are tight.

 

[crazy4offroad]

That big bolt is for the brace bars that usually get discarded when doing motor mounts, or repairing the trans or exhaust. The empty bolt holes are basically the same thing but for a different design. Take good care of that torque converter inspection cover, they are high dollar to replace. It is cast aluminum and probably why the bolt hole is stripped out.