Projected Horsepower Gains for 2007 Impala SS

[Z06Vettes4me]

On my previous question I meant to also ask approximately what the horsepower gains may be with the 93 octane tuning on the 2007 Impala SS 5.3 liter & if it would be safe to assume that it may be close to that of the 2006 model? Thanks!!!

[mikel]

Well, we saw about 17fwhp on the 06 models, I would imagine the 07 would be about the same.

Thanks

[Z06Vettes4me]

Well, we saw about 17fwhp on the 06 models, I would imagine the 07 would be about the same.

Thanks

On the topic of the 17 fwhp gain, do you have any idea or conversion factor to compare it to the net hp of 303? In other words. approximately what it raise the 303 to? Thanks again for your help!!!

[06MonteSS]

stock, our 5.3L's put out about 270-ish fwhp... so with that 17, that would make it about 287-ish fwhp.

[mikel]

stock, our 5.3L's put out about 270-ish fwhp... so with that 17, that would make it about 287-ish fwhp.