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Here it is: 581 horsepower, Motor Trend, not Car and Driver. https://www.motortrend.com/news/2019-ford-mustang-shelby-gt350-dyno-results (Should have used Google before writing my post) 494 to the wheels

I don't know if it is consistent or not. Car and Driver put a 2019 BMW M5 Competition on the dyno and came up with 617 at the wheels, which is the rated output of the engine, so, obviously, the engine was making quite a bit more. But consistently? I don't know. The internet and urban legend...

Here is how to get around that problem of the lack of clearance at the brake rotor. To clean the inside of the wheels, place the car on jack stands, so that the rear wheels are not touching the ground. I lie under the car, and put my soapy, soaked sponge on the inside of the rim in an area...

It appears that there are both German and European standards on that side of the Atlantic. https://autoexpert.com.au/posts/the-truth-about-carmaker-engine-power-claims

A manufacturer making false horsepower claims in the United States would be subject to truth in advertising laws. Moreover, there are standards here with respect to how manufacturers measure the horsepower, and third party observations as well. I imagine the European Union has similar things...

Isn't the BMW in the video just one example that you are trying to use to prove your point?

Wheel Barrel You guys are talking about washing the inside of the wheel, way back behind the face?

I don't think any of us do, but at least now you are in the same discussion as the rest of us. :like:

See post # 6 and/or watch the video. This is backwards from the entire reason anybody is discussing horsepower in this thread.

I may not be the right person to ask. I have had no cooling issues, but others posting with more experience say that cooling issues typically arise as they gain a lot of experience (because they are pushing the cars harder) <--- That is not about the Dark Horse, but just a statement in general.

I have been enjoying my silly trim level. It's a great track car.

Oh, I was not sure what to make of your comment about no race track being open.

Might need to open up the wheel wells, but these should work.

What could they have possibly done to the Coyote to get that sort of rear wheel horsepower number?

I see you sold it, but Michelin Road Atlanta is very close to where you live, and is a great race track. My avatar is at Road Atlanta.

Very generous dyno. 470 whp for the Dark Horse? Right.

Another solution to mitigate lift at the front of the car is the addition of a hood vent to redirect airflow. “Any of the air that comes in the front of the car, it's got to go somewhere," Gesek explains. "If it comes in the front and it exits through the tunnel, which is where I think most of...

What is this? Is header false knock common? What can be done about it?

Not worth it? Have you compared the cost of 110 to E85 per gallon? It is also kind of tough to fill up on 110 in a street car.

Maybe I am missing your point, but these are not the engines installed in the Mustang.