Quote:
Originally Posted by hopped up
pretty sure there wasnt a 57 impala! impala began in 58 ,just saying. nice truck keep up the work
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Your right the Impala model officially began in 58. One of the suffix code lists online listed it as a 57 impala power pack 283 and also in a chevy book it was also listed as 57 impala 283 4 barrel engine. The engine has the head castings of a powerpack engine so that narrows it down to 57 283 4 barrel.