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LOST ALL MY ORIGINAL BOOKS,WITCH YEAR WAS THE GN THE FASTEST PRODUCTION CAR. powersix dunno
 

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1986,faster than the Vette powersix headbang
 

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i thought it was 87.86 was 235hp and 330ft lb.87 was 245hp and 355ft lb
 

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Differences are insignificant, and are not 100% 86/87 differences (model year vs. production date, aluminum vs steel parts, etc.). HP ratings were just a farce to keep the GM brass happy because of lower Corvettte ratings. Real HP for both years was closer to 275.
 
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