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Discussion Starter · #1 ·
What Is the difference between the 2004 ImpalaSS and the 2003 Grand Prix GTP? I know they both got the same engine and transmission, but ive heard that the GTP is faster. Do they have different PCM's or what?
 
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Discussion Starter · #2 ·
it can be how the car is tuned, as well as the size of the car (weight) and even stock tuning.
 

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mos tof the difference is sheet metal, same eninge/trans, if anything a 2dr GTP will be quicker (lighter by about 300#s IIRC) the #s should be almost even on the 4dr GTP. The Imp has larger front rotors than the GTP does. Other than that there are a few conviences that the GTP has that the SS wont (HUD/perf. shift come to mind).
Also the Imp has a lighter Alum cradle as opposed to the steel one on the GTP
 

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well i have an 04ss n i raced 03gtp of a rolling start n i beat him...at that time i just had a cold air intake n gtp had an exhaust...
 

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GTP is no match!

I beat a few of them by at least 5 car lengths in 0 to 80...probably more over the long haul.

Anyone see the video on Youtube with the Impala SS outrunning a helicopter doing 130mph? An expert said the SS is capable of 150mph!!

Check it out:
 
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