Don cut the bottoms of two powerplants, arranged them at 120 degrees, and joined these motors with the help of a custom crankshaft with small-block Chevy main bearings and Honda rod bearings. The H-beam rods are also sourced from Honda, the aluminum oil pan is complemented by a dry-sump pump, two custom-built cam drives are joined by a serpentine drive, and a couple of water pumps are also featured.
Six years after that Reddit post, only a pair of boosty snails are needed to develop 810.3 horsepower and 699.9 pound-feet of torque on E85 fuel at 17.5 PSI. “Every piece of this car was meticulously built from scratch by Don in his workshop,” said Nth Moto, a Minnesota-based auto shop responsible for the dyno video at the end of this write-up and the AEM Infinity ECU that governs the one-of-a-kind blunderbuss.
Considering that each 1JZ cranked out approximately 300 horsepower from the factory, the resulting 5.0-liter V12 still has a lot to prove going forward. However, Groff doesn’t intend to push for 1,000 HP because that would stress the engine too much and the car hasn’t been created for bragging rights on paper or at the drag strip.
Oh, and by the way, the British Racing Green open-wheeler also happens to be a road-legal car. “After a year and a half, I got through the state quagmire and got license plates, a VIN number, and a paper title,” wrote Don’s nephew in a more recent post on Reddit.