Corrected Horsepower Factors > 340 ~ 360 ~ 383 ~ 400 ~ 426-S ~ 440

mguner said
I'm curious about the listings for the 400. Are those numbers for the 400 "P" or the 400 "M"?

That would be the 1972 and 1973 ~ 400 4-Barrel {Engine Code "P"}

That Engine was available in the;
* Plymouth Road Runner and Satellite packages.
* Dodge Charger 'Rallye' and 'SE', and Coronet packages.