We here at GM Authority love a high-horsepower build just as much as anyone, but when the ride in question was built at home in a garage, well, we’ve got to give an extra nod of respect. Such is the ...

Let’s be honest – engine output is totally insane these days. That’s doubly so when looking at the aftermarket, where four-figure horsepower numbers are quickly becoming the norm. This twin-turbo 1969 ...

We love ourselves a good sleeper build and this 1966 Chevelle with twin-turbo power definitely qualifies as one. While the classic muscle car has obviously been cleaned up and modernized, the exterior ...