2020 Corvette Stingray Delivers Unbelievable Numbers On The Dyno

Motor Trend magazine recently strapped a 2020 Chevrolet Corvette Stingray onto a dyno and the figures they saw are eye-popping to say the least.

Running in fifth gear, the new 2020 ‘Vette delivered 558 hp and 515 lb-ft (698 Nm) of torque through the rear wheels. If you estimate a 15 per cent drivetrain loss, those numbers would mean the C8’s 6.2-liter V8 engine pumps out about 656 hp and 606 lb-ft (821 Nm), well above the 495 hp and 470 lb-ft (637 Nm) claimed by Chevrolet.

Confused by the results, the Corvette was strapped down for a second power run and delivered almost identical numbers. The third and fourth runs of the car saw 561 hp and 515 lb-ft (698 Nm) as well as 556 hp and 523 lb-ft (709 Nm) respectively. Surely the mid-engined Corvette isn’t that powerful?

Also Read: Can The 2020 Corvette Stingray Take Down The Porsche 911 Carrera S?

The final two runs were performed in sixth gear as Motor Trend looked to find which gear had a near 1:1 ratio. The penultimate run saw the car deliver 478 hp and 536 lb-ft (726 Nm) while in the last run it pumped out 478 hp and 544 lb-ft (737 Nm).

Chevrolet soon chimed in and provided gear ratios for the supercar, confirming that models with the electronic LSD have a fifth gear near a 1:1 ratio making it the best gear to perform a dyno run in. Motor Trend subsequently strapped a 2020 Ram 2500 Limited onto the same dyno and returned figures close to what Ram claims, indicating that an inaccurate dyno wasn’t to blame for the results.

It still remains a mystery why the 2020 Corvette consistently produced much more grunt than Chevrolet claims although it is obvious that the claimed 495 hp and 470 lb-ft are very conservative. It will take subsequent tests of press cars and customer-owned examples to confirm just how powerful the car is.

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  • brilliantradience

    I wish they’d stop posting these, insurance companies charge by HP.

    • Ben

      I thought that was proven a myth or misunderstanding. The same thought of “Mustang and Porsche keeps four seats so they don’t get rated as a two seater” has been refuted by insurance company personnel.

      • brilliantradience

        If it was I never heard that, they’d have to calculate rates by power, more HP = higher premiums, it makes perfect sense and it wouldn’t the other way around.

        • Ben

          It seems we’re both fuzzy on the details, but the way it was explained to me was that many variables go into a vehicle’s rate (obviously) not even including the particular driver. Performance cars usually are more expensive and use more expensive/lightweight materials and parts. The faster the car usually means the higher the price thus more costly materials or parts such as active dampers, more expensive brakes, wheels, etc.

          Just speculating myself, even if the sport car’s parts were made of “cheap” material, they’d still be more expensive due to relatively low production volume. There are way more spare Camry bumpers than Supra bumpers. If they cannot amortize the cost of production, they pass on the cost to you, a more expensive part. This likely gets factored into your rate too.

    • KenjiK

      Aren’t rates calculated on the official numbers?

      • brilliantradience

        I’m pretty sure they are, in the US auto manufacturers switched from gross HP ratings to base HP (something like that) to lower the numbers, that’s why a muscle car that made 340 hp in 1970 would be dynoed as 210+ today.

    • Six_Tymes

      yeash… good point

    • DMax

      No they don’t, not in US at least. Corvette is coincidentally one of the cheapest cars to insure. It’s less than my Fiesta ST. I think in Europe they do though.

  • Ben

    Okay, so it seems Chevy picked a ringer to go out for media testing. That being said, I think its time we expect less drivetrain loss with more efficient transmissions. However, this engine is clearly a ringer or the market is getting one helluva underrated engine.

  • ErnieB

    Guess we’ll name this new C8 the Boomer tree hugger.

  • alexxx

    Now those 0-100km/h times of around 3 sec are making sense…

  • LJ

    Ringer for media testing to distract from the lukewarm initial reviews.

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