Picked up another motor and unfortunately it is also a left hand block.
Have found 4 motors so far and all ACL but am still looking.
After talking to a few people it turns out a GMC 270 Stag motor is worth 10 times the price of a GMC 270
Bought home this Hydramatic and am a bit stumped as to what is that thing hanging off the back.
Pulled it apart and got a look inside, looks ok
Should clean up well.
I know nothing about automatic gearboxes but I will find someone who does.
Information found so far indicates 1939 design, Cadillac or similar model car but possibly "beefed up".