- The Northstar XV12's three-stage variable induction system with tuned primary and secondary pipes results in a flat torque curve, making it more of a torque table with short legs. "It's a simple, compact and reliable design," Kowalk said. "Electric variable intake valve actuators enable rapid changes in manifold geometry over conventional pneumatic actuators."
- Many of the V12's accessories are run off the rear chain timing drive, which Kowalk said "created opportunities for better packaging by eliminating the need for a front engine accessory drive and reducing the engine's overall length, as well as the height of its front end." He said the "robust yet quiet-running chain drives the engine's camshafts, high-pressure fuel pump, oil pump, and hydraulic power-assist steering pump, and also has the potential to drive the water pump and air conditioning compressor."
- Northstar XV12 is designed for 60,000-km intervals between oil changes, thanks to a combination of improved oil sensors and monitors, reduced oil consumption, oil cooling and a larger oil sump capacity.
The Northstar XV12 project began in late 1999, Indra said, with GM developing the technologies for all the major systems and Cosworth Technology providing the engineering integration of these technologies.
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