This was a lot tougher than we thought. Some time ago, Speed-O-Motive built a test engine whose only purpose in life was to live on the dyno and test our harebrained ideas to make more power. While ...

This Challenger build takes things to the extreme with a full engine swap and precision dyno tuning to unleash maximum ...

Incredible as it may seem, the Le Mans-style prototype that stars in this video – the Mazzei Formula 5 – is actually fully road legal. It’s also powered by one of the world’s first examples of a ...