Check out how much power is lost to the transmission in this latest dyno test video from Hennessey Performance.
When Ford first announced the GT, Hennessey was very excited. Soon, they’d have their very own American-made (although technically Canadian manufactured) supercar to do what they do best: make it even better. And by better, we mostly mean more powerful.
The Ford GT section of Hennessey’s website had thus far been telling us to “stay tuned” for when they eventually came out with performance upgrades for an already extremely performance-oriented car. It’s been a year, and Hennessey’s engineers have gone over the GT from top to bottom to see what they can do to make it even better.
Turns out they can’t find anywhere to improve on.
“HPE does not plan to offer any performance upgrades for the new Ford GT at this time,” Hennessey now writes. “It does not happen often but some ars are not meant to be modified. In our humble opinion, the new Ford GT is one of these cars.”
Considering the GT is a mid-engined supercar built to be as light as possible, Hennessey probably found out in short order that the normal spaces and gaps that exist on most vehicles aren’t there on the GT.
So instead of doing a pre-tuning dyno test, we just get a 100% stock dyno test to see how much power is lost to the GT’s transmission. As it turns out, not a lot.
At the crank, the GT’s 3.5-L twin-turbo EcoBoost V6 engine produces 647 hp and 550 lb-ft of torque. After a few minutes on the dyno, the machinery reported a rear wheel power of 581 horses and 513 lb-ft of rear wheel torque.
That’s actually very efficient. Most cars lose 15% of their power to the transmission, but the GT only loses 10% to its 7-speed dual-clutch. Most Hennessey vehicles lose between 20-25% of their power, but since they typically produce something around 1,000 hp, you generally don’t feel it.
Instead of upgrades, Hennessey is offering GT owners maintenance programs and oil changes. It’s the best they can do for an already perfect car.