Here’s a behind-the-scenes look at what’s underneath one of our Alien Series intake manifolds. A lot of thought and design work goes into hiding a tremendous amount of functionality within these intakes. | Nelson Racing Engines

Our 632 Alien Hot Rod Series is the perfect engine package for anyone who loves big blocks — the sound, the double hit idle, and the presence — but still wants modern fuel injection and daily-drive reliability. The Alien series stands only 9 inches tall from the China wall, which means it fits under most hoods — a true rarity in the big-block world. This particular combo makes 850 horsepower on 91 octane, sounds absolutely pissed off, and revs like lightning. You can drive it anywhere. If you’re