The Goliath 700 makes 280 horses more than the Silverado

When you have a product come out of Hennessey’s factory, you know it’s mighty fast. One such product is the Goliath 700, which is based on the GMC Sierra Denali. Hennessey gave the Sierra a significant power boost which turned the simpleton into a beast. To see how much of a difference it made, the tuner decided to pit the Goliath 700 against a stock 2020 Chevy Silverado which features the same engine as the Sierra, sans the Hennessey mods.

How Do They Fare Against Each Other?

Watch The Hennessey Goliath 700 Take On A Stock Chevy Silverado
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Let’s put out the specs first. The 2020 Chevy Silverado in question comes packed with a 6.2-liter, V-8 mill under the hood. It makes 420 horses and 460 pound-feet of twist.

Power is sent to the wheels via a 10-speed automatic transmission. The Goliath 700 is powered by the same mill, but Hennessey installed a 2.9-liter supercharger that pumped up the power output. The mill now churns out 700 horses at 6,300 rpm. The company has also installed:

  • High-Flow Intercooling System
  • High-Flow Air Induction System
  • Custom HPE Camshaft
  • Chromoly Hardened Pushrods
  • Crankcase Ventilation System
  • HPE Engine Management Calibration
With all these mods, you’d expect the Goliath 700 to blow the Silverado out of the water. The Hennessey is obviously fast, but, surprisingly, the margin isn’t as big as you’d expect.

The company didn’t reveal any timings or conduct any re-runs. It was expected that the modded truck would win, but my highlight from the video would be how the stock Silverado held its ground.

Watch The Hennessey Goliath 700 Take On A Stock Chevy Silverado
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Remember how Hennessey’s other product, the Venom 775, beat the stock Mustang GT350? Honestly, I expected a straight-up beatdown like that. But, this video goes on to show what a capable engine the stock V-8 is. Of course, the mill mated to the supercharger is fast, too.

What are your thoughts about this video? Share them with us in the comments section below.

Sidd Dhimaan
Associate Editor and Truck Expert - sidd@topspeed.com
Sidd joined the Topspeed.com team in 2017 as an intern and in less than a year he earned a full-time position as an associate editor and junior automotive expert. He is currently our pickup truck expert and focuses his attention on heavy-duty and off-road vehicles.  Read More
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