There has been plenty of speculation about the Corvette Stingray ZR1 and Z06. There was even a Motor Trend report that that the Z06 would get an updated 7-liter with 600 horsepower and the ZL1 would get a 700-horsepower, 6.2-liter V-8. Well, apparently those “leaks” were intended to throw us off of the scent, as GM has just unveiled the powerplants and they are surprising, to say the least.
Under the hood of the Z06 , you’ll get an updated version of the all-new 6.2-liter engine with an extra 90 horsepower, thanks to a new fuel-injection system, new software, aggressive cams and titanium exhaust system with a freer flow. The Z06 will use a six-speed automated manual transmission with no mention of a full-manual option.
The ZR1 is far and away the most unexpected change, as it will be the first Corvette since the 1950s to feature a six-cylinder engine. This twin-turbocharged 3.6-liter V-6 engine – yes, the same all-aluminum block found in the upcoming CTS Vsport – tuned to an incredible 640 horsepower.
While this 3.6-liter may sound like the same one that Caddy will use, keep in mind that the guts are fully modified to handle the 24 psi of pressure the turbochargers pump out. These modifications include: upgraded titanium pistons and connecting rods, revised software, updated cylinder heads and low-resistance bearings.
Just like the Stingray, all Chevy revealed with its first presser are the details on the engine. The Stingray Z06 and ZR1 will debut at the LA Auto Show, but we expect to see some leaked images as time goes on.
UPDATE: Sorry guys and gals, this one’s completely fake... I was completely responsible for both the article and the press release. C’mon, a V-6 in a ZR1, I don’t even know what I was thinking :). April Fools!!!
2015 Corvette Stingray Z06 and ZR1: The Legends, Modified
All-new engines and class-leading fuel economy lead the charge for all-new Z06 and ZR1
DETROIT – The Chevrolet Corvette Stingray is the most modern and innovative model in Chevrolet’s storied history. An all-new 6.2-liter V-8 engine with an estimated 450 horsepower and 450 pound-feet of torque brings impressive performance and fuel economy to the legendary sports car. Chevrolet is continuing its overhaul of the Corvette with all-new Z06 and ZR1 models.
The 2015 Corvette Stingray Z06 will use an updated version of the Stingray’s all-new 6.2-liter V-8. With the help of a high-pressure direct-injection system, updated software, a less-restrictive titanium exhaust system and a more aggressive camshaft, the 6.2-liter engine will provide an estimated 525 horsepower to the rear wheels via a six-speed automated manual transmission.
The 2015 ZR1 Stingray will debut with an all-new 3.6-liter V-6 engine that has been fully overhauled to racing specs. Titanium connecting rods and pistons, updated cylinder heads, low-resistance bearings, full-titanium exhaust system and a pair of intercoolers have prepared the 3.6-liter engine for a pair of turbochargers each developing 12 psi of boost. This extra 24 psi, a full-race-spec direct-injection system and new software raise the 3.6-liter to an estimated 640 horsepower.
A valved and tuned exhaust system helps the V-6 engine deliver eight-cylinder-like sound and a sound-replicating system channels V-8 sounds that match the speed of the V-6 engine into the cabin.
The reduced weight from the all-aluminum 3.6-liter engine allows Chevrolet engineers to easier achieve the perfect weight distribution and to help drop the ZR1’s weight by roughly 200 pounds when compared to the 2013 model.
Both models will be revealed at the Los Angeles Auto Show on November 20, 2013.