- Photo credits Ford

The new Ford Mustang Shelby GT500 is far from being a slow car. Its technical specifications claim 760 hp, making it the most powerful production Ford of all time. This power allows the Shelby GT500 to surpass the Dodge Challenger SRT Hellcat SRT and put itself on par with a Challenger Hellcat Redeye.

Still, we all know that there's always a way to gain a few horsepower with a few adjustments. That's what Palm Beach Dyno tuner Ken Bjonnes did on a Shelby GT500 owned by a client named Lee Dennis. Ken reprogrammed the engine control unit to allow full use of 93-octane gasoline. He also raised the redline by 500 rpm.

On the dyno, Lee's Shelby GT500 produced about 664 hp, which represents a power loss of about 13%, assuming the 760 hp figure given by Ford is correct. After the above-mentioned reprogramming, the muscle car gained about 39 hp. Since power was still increasing at 7,500 rpm, Ken raised the redline by 500 rpm to 8,000 rpm to get an even better result.

He wasn't disappointed at all! In the end, Lee's Ford Mustang Shelby GT500 peaked at about 720 hp on the dyno at 8,000 rpm. Applying the supposed power loss of 13%, this would give Lee's Shelby GT500 a staggering 810 hp. This incredible figure is thus comparable to the 808 hp of the Dodge Challenger SRT Demon powered by pump gas!

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