Take a look at this, 1967 Ford Mustang “Nightmare” Start Up and Idle!
The 1967 Ford Mustang known as “Nightmare” is the kind of car that immediately gets attention the moment the engine starts. Classic muscle car styling combined with a modern high horsepower engine setup makes cars like this some of the most impressive builds in the drag racing and pro street world. The sound alone tells you this is not a normal Mustang.
The 1967 Ford Mustang is already one of the most iconic American muscle cars ever built, but when builders turn one into a high horsepower drag car, the result is something completely different from the original street car. Most builds like the Nightmare Mustang include a big block engine or a highly modified small block with a supercharger or turbo setup.
When a car like this starts up, the idle is usually very aggressive because of the camshaft profile. High performance engines often use large camshafts that keep the valves open longer to allow more air and fuel into the engine at high RPM. The downside is a rough idle, but for race cars, performance matters more than smooth operation.
The sound of a built engine idling is very distinctive. You can often hear the lope from the camshaft, the fuel system working, and sometimes the whine of a supercharger if the car is blower powered. Many drag cars run mechanical fuel injection or high performance electronic fuel injection systems that deliver large amounts of fuel, which also changes the sound of the engine at idle.
Cars like the Nightmare Mustang are usually built for straight line performance. They often have large rear tires, reinforced suspension, roll cages, and lightweight components designed to handle extreme acceleration. Even though they look like classic street cars, underneath they are full race cars.
The startup process for high horsepower engines is also different from normal cars. Fuel pressure must be correct, ignition timing must be set properly, and the engine often needs to warm up before it can run cleanly. High compression engines especially need proper warm up to run correctly.
One of the reasons people love watching startup and idle videos of cars like this is because it gives a sense of how powerful the engine is before the car even moves. The sound, vibration, and aggressive idle all show that the car was built for performance.
Classic muscle cars like the 1967 Mustang continue to be popular for drag racing builds because they are lightweight, have a large engine bay, and have a huge aftermarket support for performance parts. That makes them perfect platforms for building high horsepower drag cars.
A car like the Nightmare Mustang represents the combination of classic American muscle car design and modern drag racing performance. It looks like a classic car from the outside, but under the hood it is built to be extremely fast and extremely loud.
And sometimes, just hearing a car like that start and idle is almost as impressive as watching it race.
