question about tire pressure

["car man" <carbuyer02@xxxx>]

does anyone know what the tire pressure sepose to be on my tires???
for my 1970 chrysler 300 with 440 engine
i told the guy and he put all my tires at 32psi ig to new tires . he says 
it wears evenly but
my car well i know you are gonna be mad at this but i used to do 0-60 in 
about 4 seconds now it like
0-60 in 7 seconds

there got to be sormething wrong
thank you for your help
shawn

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