I have a few 225 questions, hopefully we can diagnose my car?

I can take a shot @ 1B. I think it was '75 when Ma Mopar changed the carbs from a side hinged float to a center hinged float. When you go up hill the float will rise in the fuel bowl and starve the engine. When you go down hill the float will sink a bit but you are still getting fuel. I would get a '71 or '72 carb and try that. Had a '77 Road Runner with a 318 that did this until I got tired of it and swapped on a 650 Holley. The LAST time it died on me was on a railroad crossing with a train coming. That's when I decided to spring for the Holley carb and an Edelbrock manifold.