2006 Grand Prix GXP LS4 V8 303HP with Flowmaster O

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Vantage08
August 29, 2008
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Sounds good.. WIsh the 3.8s sounded like that.
LS4GXP
August 24, 2008
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wow u are retarded, it is an ls4 and it is based off of the truck motor but is a bit smaller to fit FWD cars. the ss impala has an ls4 also, do some research next time before posting false shit
36bd9fbd
June 14, 2008
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To poster of this video: GM does not and did not make an LS4 as we're are just getting the LS3 ( aka: 2008 vett and 2009 GXP G8). Your car has the same LX series 5.3 litre truck motor that's in the impala SS for same years 2006-2008
254065
September 11, 2007
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sounds sick
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Added: Feb 26, 2007
2006 Grand Prix GXP LS4 V8 303HP with Flowmaster Org 40 Series Start-up exhaust sound.