March 2013: Ford GT and a Dyno Pull
My Ford GT’s engine was modified in August of 2007. The Supercharger pulley was replaced with a smaller unit, and the engine’s ECU was re-flashed to take advantage of the smaller pulley. Then in April of 2008 I swapped the factory exhaust system for a Ford Racing/Borla system that mostly adds a deeper tone to the exhaust note while dropping about 30 pounds compared to the stock exhaust.
I was curious what these changes did to my Ford GT’s horsepower, though I’d heard from others with the same modifications that their engines pulled around 620 horsepower on a dyno. I finally got my GT on a dyno in March of 2013, where it pulled 618 horsepower. Remember that number is at the rear wheels, which means the engine horsepower is around 700.
And that’s why it’s hard to get traction at the drag strip.