We're just a few weeks away from the official unveiling on the 2016 Cadillac CTS-V but spy photographer Chris Doane has revealed the model will have a supercharged 6.2-liter V8 engine that develops 640 bhp (477 kW / 649 PS).

We're just a few weeks away from the official unveiling on the 2016 Cadillac CTS-V but spy photographer Chris Doane has revealed the model will have a supercharged 6.2-liter V8 engine that develops 640 bhp (477 kW / 649 PS).

If Doane is correct, the CTS-V will use a slightly detuned version of the supercharged 6.2-liter V8 engine that powers the Corvette Z06. It produces 650 bhp (485 kW / 659 PS) and 650 lb-ft (880 Nm) of torque in that particular model.

To put those numbers into prospective, the Mercedes E63 AMG has a twin-turbo 5.5-liter V8 that produces up to 577 bhp (430 kW / 585 PS) in S guise. The BMW M5, on the other hand, has a twin-turbo 4.4-liter V8 with up to 567 bhp (423 kW / 575 PS) when equipped with the competition package.

More notably, the previous CTS-V had a supercharged 6.2-liter V8 engine that developed 556 bhp (415 kW / 563 PS) and 551 lb-ft (746 Nm) of torque. This means the new model will have 84 bhp (62 kW / 85 PS) more than its predecessor.

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2016 Cadillac CTS-V to have 640 bhp