go to hothemiheads.com a great source for hemi info the 392 wasn't introduced till 1957 the smallest displacement hemi was a 241 ci. dodge from 1953. makes a great motor for an open hood hot rod. the best way to tell is by looking for the #s on the front of the block just behind the water pump scrape off the grease and you will see the #'s. either way it doesn't matter the displacement. an old hemi is a great hemi. check the #'s with the hemi identification guide from hothemiheads and you are all good to go. then you know what you are buying. good luck
