Is a 1955 Chrysler 331 Hemi a desirable motor in todays market, looking at one in a New Yorker. I do not know the condition other than the car looks good. Any thoughts on value as a core would be a big help. And would a later model Torque flight bolt up to it.
1955 was the last year of the 331. In terms of desirable, the newer the better. 1951 - 53 331 (least) 54 - 55 331 (better) 56 354 (more better) 57 - 58 392 (best) 64 - 72 426 (most valuable of all). A late model torqueflite will not bolt up. They need an adapter. In any case, unless the car is a total wreck, you would get more money for the car with motor than the motor out of the car.
there is a huge post here on early hemi engines here. Try the search maybe you will have better luck than I did. Here is one from hot heads. http://www.hothemiheads.com/hemi_info/hemi_engine_id.html
all Chrysler hemis are desireable, they go for 1500.oo and up here on the west coast, getting very hard to find. wilcap makes adapters for various automatics.