GM throws down the gauntlet with 2015 Z06 power figures

Comments 70
Download PDF

So everyone knows that the 2015 Corvette Z06 is coming, and is fast. How fast? Don’t worry – GM will be proud to tell you.

Here’s the skinny: the 2015 Corvette Z06 has a new engine, as you probably know. They’re dubbing it the LT4, which they’ve used before, as you also probably know. What you may not know, however, is how powerful it is.

When I went to the Detroit Auto Show back in January of 2014, they had one of these cars on display, including a cutaway model: IMG_5375 IMG_5378

On the interior, there was a badge that proudly displayed the horsepower figure:

Please excuse my terrible photo quality. I promise, it gets better... usually.

Please excuse my terrible photo quality. I promise, it gets better… usually.

Well, they were wrong. In the good way.


Here’s the official word on the power of the new Corvette Z06:


© General Motors

© General Motors

In plain English: the 2015 Corvette Z06 makes an SAE-certified 650 horsepower and 650 lb-ft. of torque.

Sounds like a big deal, right? It is. How big? Well, in their ever-present generosity and wisdom, General Motors has given us this handy little reference chart so that we can figure out just how the new Z06 stacks up with its competition.

© General Motors

© General Motors

Yeah. The boys at GM mean BUSINESS with this car. Consider this: the new Corvette Z06 makes 90 more horsepower and 134 lb-ft. of torque than a Porsche 911 Turbo S. Understandably, General Motors is very proud of what they’ve accomplished here.

“The LT4 Small Block sets a new benchmark for power and torque at GM,” said Steve Kiefer, vice president, GM Powertrain Engineering. “The engine also puts the new Corvette Z06 on par with the most powerful supercars offered in America, while delivering performance with impeccable manners that make it suitable for daily driving.”

Who says pushrods are dead? Not GM, that’s for sure. Jordan Lee, the chief engineer for Small Block engines, had even more to say on the subject:

“It’s also worth mentioning that the LT4’s supercar performance numbers are achieved with an engine that is nearly the same size as the very compact LT1 engine introduced in the 2014 Corvette Stingray. The power density of the LT4 makes it one of the smallest and lightest 650-hp engines in the industry.”

Everything about the new LT4 engine is an astounding improvement compared to its predecessors. The LT4 makes 40% more peak torque than the C6 Z06’s LS7 V8. It also makes 7.5% more torque than the LS9, the engine from the outgoing Corvette ZR1. Those are very impressive figures, but the graph above tells the real story here:

The LT4 has over 400 lb-ft. of torque available from 1,000 RPM.

The power curve is impressive. No matter what you’re doing, the LT4, with its 20k RPM 1.7L supercharger, is ready to deliver all of the performance you need – and more – at the flip of a switch.

Or a press of the throttle.

Here’s a bonus cutaway rendering of the engine:

© General Motors

© General Motors

You can get this engine mated to the new 7-speed manual that’s found in the 2014 Corvette Stingray, and now, for the first time ever in a Z06 Corvette, an 8-speed automatic transmission.

The 2015 Corvette Z06 will go on sale in the fourth quarter of 2014. I don’t know about you guys, but I’ll be counting my pennies for sure. I’ve seen it in person, and now I know the power figures.

I want one.

Someday, my beautiful friend. Someday, you will be mine.

Someday, my beautiful friend. Someday, you will be mine.

Ray Saez, Jr.

Ray is a lifelong auto enthusiast. His father worked on the dealership side of the industry for many years, and his passion for fast, fun, and unique cars has been passed on. Particularly fond of American cars and trucks, Ray is an avid General Motors fan. When not writing, he can be found with his dogs, or at a local car show.

View all contributions by Ray Saez, Jr.


Subscribe via RSS

Enter your email address:

Delivered by FeedBurner