I'd agree on 240 lbs. I humped one out of a '61 Impala years back... on my back in the driveway. And it has a weird center of gravity once you get it loose. Bob
The 240 number sounds accurate. I helped my uncle install a rebuilt unit back in 1969. I remember the shipping weight be 210-without the torque converter. While wallowing around on a very rough floor and trying to lift this thing into place, you will discover why curse words were invented! Transmission jacks were invented for these beasts! LOL
I did mine with a floor jack and it was shaky at best. I was parting the car out, think the decision was made to separate the transmission due to the chain fall we had at the time.
Just an estimate but I believe it's about heavy enough to give the average guy a small hernia. However, it's been a long time since I picked one up........