Quite simply, Thomson Automotive has built the Frankenstein's Monster of LS engines. Starting with an LSX iron block, a set of prototype cylinder heads from GM Performance Parts and a custom-machined rotating assembly, we blew more than 25 pounds of boost - from a pair of 88mm turbos - through a pair of Accel/DFI throttle bodies and into a custom, tunnel ram-type intake manifold. The coil-on-plug-style ignition wouldn't cut it for this engine, so we developed a system that uses a front-mounted distributor, along with an Accel distributor and Mallory coil. A new DFI management system oversees the engine's operation.
When the dust settled - and our ears stopped ringing - the SuperFlo dyno spit out the result: 2,048 horsepower. Oh, and did we forget to mention this was achieved with only 400 cubic inches? That's right! 2,000 horses from only 400 cubes. That's an astonishing five horsepower for every cubic inch of displacement. Better still, we've made more than 80 passes on this engine and is hasn't broken so much as a throttle spring. Despite the high-load dyno passes and tremendous boost pressure, the head gaskets remain intact and crankcase vacuum is excellent.
This engine is a monster alright, and we keep it chained up in the basement, feeding it scraps of raw meat and fish heads. And like all "good" mad scientists, this successful "what if" project only gave us a taste for more. Call us with your needs and we'll build a monster for you, too. (Raw meat not included.)
An LSX engine with 400 cubic inches, a set of prototype cylinder heads from GM Performance Parts, two 88mm turbochargers, a custom intake, custom ignition system and DFI engine management work together to produce more than 2,000 horsepower.
The foundation of the engine is the LSX iron cylinder block. It is a inexpensive and exceptionally strong.
The all-forged rotating assembly includes a callies crank, Diamond pistons and a set of custom-machined, billet aluminum connecting rods. They're lightweight, but very thick and sturdy.
A pair of 88mm turbochargers from Precision Turbo blows into the LSX engine, with more than 25 pounds of boost.
A new Accel/DFI management system controls the twin-turbo LSX engine.
DFI's Joe Alameddine personally oversaw the tuning of the turbo engine, ensuring it was getting all the fuel it needed and that the ignition system was firing as needed.
The readout from the engine dyno validated our effort on the engine, showing a best of 2,048.9 horsepower and more than 1,500 lb.-ft. of torque.