340 ta block whats it worth
It's worth whatever someone is willing to pay.
It is worth far more to someone restoring a T/A.
It isn't worth any more that a standard 340 block for someone building a HotRod.
Don't pay a premium for it if you are going to use it in a non-T/A
Snatch it up if the deal is good then re-sell it.
Most of these "So Called" T/A blocks were never in a T/A. Usually it will be some dude that thinks 340s only came in T/As so his old engine must be out of one of those.