47RE swap (photo ID)

The 47-series are one size heavier (internals) than the 46-series OD transmissions.
I wonder how much more power a 47 will rob compared to a 46, or even a 42-series (904) transmission.
You pose some good questions. My stroked 340 should make at least 400-425hp. I’m thinking the A500 won’t last but a year and the 727 inspired HD trans will be bullet proof. I’m not looking for the fastest car. I just want stout parts and if the price is right for the pictures 47RE I will get OD with a lockup converter and that will be OK with me. I just want to go places besides around town in my car and not kill my engine and be deaf when I get there.