Chevrolet Corvette ZR1 Rated at 638 hp
#1
04-25-2008, 07:27 AM
Chevrolet Corvette ZR1 Rated at 638 hp The high word is finally out, the Corvette ZR1, powered by GM's new and most powerful engine ever, produces 638 hp. The hand-built 6.2 liter LS9 supercharged V8 engine was initially estimated at 620 hp, 100 hp per liter, but has exceeded expectations with 638 hp (476 kW) and 819 Nm of torque (604 lb.-ft.)
"One of the most amazing things about the Corvette ZR1 is the level of refinement that our designers and engineers have attained. Even with all that power, this car has road manners that will allow our customers to enjoy it on the streets as a daily driver, and on the track," said Chevrolet General Manager Ed Peper.
"The combination of large displacement and the new, four-rotor design broadens the effective range of the supercharger, allowing the engine to make more power at lower rpm and sustain it throughout the power band," said Winegarden. "The low-end torque is tremendous and the high-rpm charge from the supercharger is simply amazing."
"One of the most amazing things about the Corvette ZR1 is the level of refinement that our designers and engineers have attained. Even with all that power, this car has road manners that will allow our customers to enjoy it on the streets as a daily driver, and on the track," said Chevrolet General Manager Ed Peper.
"The combination of large displacement and the new, four-rotor design broadens the effective range of the supercharger, allowing the engine to make more power at lower rpm and sustain it throughout the power band," said Winegarden. "The low-end torque is tremendous and the high-rpm charge from the supercharger is simply amazing."
#5
04-25-2008, 12:46 PM
Teamspeed Pro
Join Date: Feb 2008
Location: Huntington Beach, CA -> Ashburn, VA -> Raleigh, NC
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GTR will be faster then this car around a track. Hell I bet the Z06 is faster then this thing around the track.
I don't think this car is going to perform anywhere near what most people are hoping it will.
#6
04-25-2008, 01:29 PM
there's a video here:
Corvette ZR1 rated at 638 hp - AutoWeek Magazine
more info:
The official dyno numbers are in: The supercharged 6.2-liter V8 in the forthcoming Chevy Corvette ZR1 cranks out 638 horsepower.
That's about 20 hp more than the estimates from General Motors' powertrain gurus when they unveiled the new ZR1 and its monster motor last December.
To simplify the math: The LS9 engine in the ZR1 is rated at 103 hp per liter of displacement, or 1.7 hp per cubic inch (6.2 liters is equal to 376 cubic inches, for the old schoolers in the audience.)
All that power will push the Corvette ZR1, which goes on sale this summer, to a top speed of more than 200 mph, GM says. A suggested retail price for the car hasn't been set, but it is expected to be in the neighborhood of $100,000.
What about the grunt? The official number is 604 lb-ft of torque.
The key to that making all the horsepower and torque is a Roots-type supercharger with four-lobe rotors that sits atop the LS9 engine. A liquid-to-air intercooler is integrated into the supercharger's housing.
The supercharger has a volume of 2.3 liters, with a maximum boost pressure of 10.5 psi. Turning that blower required engineers to fit the LS9 with an 11-rib accessory drive belt.
The engine will be hand-built at GM's Performance Build Center in suburban Detroit, the same plant that hand-builds the LS7 V8 used in the Corvette Z06.
Time for some bench measuring, you say? OK:
-- The 6.0-liter V12 in the Ferrari 599 GTB Fiorano is rated at 620 hp and 448 lb-ft.
-- The 6.5-liter V12 in the Lamborghini Murcielago is rated at 580 hp and 650 lb-ft.
-- The turbocharged 3.6-liter flat six-cylinder engine in the Porsche 911 GT2 is rated at 530 hp and 505 lb-ft.
Corvette ZR1 rated at 638 hp - AutoWeek Magazine
more info:
The official dyno numbers are in: The supercharged 6.2-liter V8 in the forthcoming Chevy Corvette ZR1 cranks out 638 horsepower.
That's about 20 hp more than the estimates from General Motors' powertrain gurus when they unveiled the new ZR1 and its monster motor last December.
To simplify the math: The LS9 engine in the ZR1 is rated at 103 hp per liter of displacement, or 1.7 hp per cubic inch (6.2 liters is equal to 376 cubic inches, for the old schoolers in the audience.)
All that power will push the Corvette ZR1, which goes on sale this summer, to a top speed of more than 200 mph, GM says. A suggested retail price for the car hasn't been set, but it is expected to be in the neighborhood of $100,000.
What about the grunt? The official number is 604 lb-ft of torque.
The key to that making all the horsepower and torque is a Roots-type supercharger with four-lobe rotors that sits atop the LS9 engine. A liquid-to-air intercooler is integrated into the supercharger's housing.
The supercharger has a volume of 2.3 liters, with a maximum boost pressure of 10.5 psi. Turning that blower required engineers to fit the LS9 with an 11-rib accessory drive belt.
The engine will be hand-built at GM's Performance Build Center in suburban Detroit, the same plant that hand-builds the LS7 V8 used in the Corvette Z06.
Time for some bench measuring, you say? OK:
-- The 6.0-liter V12 in the Ferrari 599 GTB Fiorano is rated at 620 hp and 448 lb-ft.
-- The 6.5-liter V12 in the Lamborghini Murcielago is rated at 580 hp and 650 lb-ft.
-- The turbocharged 3.6-liter flat six-cylinder engine in the Porsche 911 GT2 is rated at 530 hp and 505 lb-ft.
#8
04-25-2008, 02:17 PM
Teamspeed Pro
Join Date: Feb 2008
Location: Huntington Beach, CA -> Ashburn, VA -> Raleigh, NC
Posts: 3,141
I don't think the car is going to properly handle the power it is putting out. With the Z06 being lighter and more manageable (we'll wait and see for the later). I think that it may be faster (esp. on certain tracks) if not almost identical on most courses.
On the hwy, the ZR1 will be quicker for sure. But on the track, we'll have to wait and see. Power isn't everything, and too much power on the track isn't a good thing if the car can't manage it.
#10
04-25-2008, 02:46 PM
