Nelson Racing Engines continue to show the world over that one can never have too much horsepower, especially in a Small Block V8 engine. Case in point: their built twin-turbocharged 427 cubic-inch LSX crate motor that dynos at 1,154 horsepower with a tame 14 psi of boost, on fuel that can be found at the everyday gas pump. But NRE claims that it’s plausible to see 1,700 horsepower if the machine was running on racing fuel. Tone the boost down to 6.6 psi, and the engine produces *just* 842 horsepower.
NRE fortified the GM LSX block with a lot of aftermarket essentials, such as a 9.7-inch deck height and filled with a 4.250-inch-stroke Callies steel crank, near-indestructible Oliver billet rods, JE pistons, Sealed Power rings, Clevite bearings and modified LS6 dry-sump oiling. The cam is a custom-ground solid roller that activates valves in the All Pro 215 heads that are CNC ported by West Coast Racing Cylinder Heads. There’s also Cometic gaskets, ARP hardware, Electromotive ECU and Aeromotive fuel pump. Lastly, a billet tunnel-ram Alien intake that features two injectors per cylinder, along with NRE’s own patented 72mm mirror-image turbos bolted onto custom stainless-steel headers, with the boost controlled by a pair of TiAL wastegates and blowoff valves. All of which is crammed into a packaged design that hides the sensors and fuel rails.
Clearly, the powerplant is extensively built, and therefore pricey as far as engines go. Specifically, the mill would run around $45,000, and will be installed in a production mid-engine vehicle as some sort of private-label project. Check out the dynamo test video below, and watch that exhaust manifold glow beautifully.