Originally Posted by Doc
They haven't stated what the actual power is; just "more than 500" which could be anywhere from 505 to 525 or more. Plus the Z/28 is AT LEAST 300 lbs lighter than the ZL1. I'm guessing they've gotten it below 3,700 lbs. so the power to weight ratio is going to be good. That plus the unsprung rotating weight on the 4 corners of the Z/28 is much less than the ZL1 so it's also going to have the advantage of quicker, smoother acceleration through and out of corners, and better braking so it can go deeper into a corner before having to brake.
It was already 3 seconds faster than the ZL1 at Milford and that was early-on before they'd done all the tweaking the've been doing the past 9 months. It's not going to be just 5 seconds faster on the Ring, it's going to be a LOT faster. That latest video shows it on power and digging hard through those corners; the same corners the Stingray is coasting through trying to hang on while the tires are screaming in protest. The Z/28 is powering through those corners...that thing is FAST.
With the already-admitted 1.05 g's in the corners and 1.5 g's braking, if they can pull off a no-screw-ups hot lap, I bet it cracks the 7:20 mark. I'm guessing 7:19-something. You heard Mark Reuss; they want to build something that the competition can't even touch, so that means not just a little faster, that means track killer faster.
My guess is they're not releasing lap times yet because either Stielow isn't done tweaking, and/or they don't want to give the competition the target numbers they have to beat until the car is close to being released for sale.
They're not going to be able to make enough of these things.
Doc, I hear you. I was tempted to predict a faster time, but I'm not ready to go out on that limb until I have more numbers -- like horsepower and torque.
In 2011 a C6 ZR1 Corvette -- with DOT Competition Tires -- barely broke 7:20 with Jim Mero behind the wheel. That car should be 400 pounds lighter than the Z/28.
I hope you're right, but I'll be stunned if the Z/28 gets below 7:30. Look at the sub-7:36 club -- there are some very heavy hitters there:
7:19.63 Chevrolet Corvette C6 ZR1 (2012) Jim Mero 9 June 2011 General Motors conducted test, base specification car with optional track DOT competition tires (Michelin Pilot Sport Cup Zero Pressure), video confirmed.
7:22.1 Dodge Viper ACR (2009) Tom Coronel, 18 August 2008, Chrysler and Motor Trend conducted test.
7:22.68 Chevrolet Corvette C6 Z06 (2012) Jim Mero, 23 June 2011. General Motors conducted test, base specification car with optional track DOT competition tires (Michelin Pilot Sport Cup Zero Pressure) and Z07 package
7:24 Porsche 911 GT2 RS, Horst von Saurma, Sport Auto (11/2010)
7:24.22 Nissan GT-R (2011), Toshio Suzuki, 1 October 2010, Nissan conducted test. Semi-wet conditions. Video confirmed. Best Motoring (12/2010).
7:24.3 Maserati MC12, Marc Basseng, August 2008, Evo Magazine conducted test
7:24.44, Pagani Zonda F Clubsport, Marc Basseng, August 2008, Evo Magazine conducted test
7:25.7 Ferrari Enzo, Marc Basseng, August 2008, Evo Magazine conducted test
7:26.4 Chevrolet Corvette C6 ZR1 (2009), Jim Mero, 27 June 2008. General Motors conducted test, base specification car with stock tires and non-stock safety equipment, video confirmed.
7:26.70 Nissan GT-R (2009), Toshio Suzuki, 23 April 2009, Nissan Motors conducted test with optional tires. Video confirmed. Best Motoring (08/2009).
7:27.82 Pagani Zonda F Clubsport, Marc Basseng, September 2007, Pagani conducted test, semi-wet conditions.
7:28.00 Porsche Carrera GT, Walter Röhrl, 2 July 2004, Porsche conducted test.
7:28.71 Porsche Carrera GT, Marc Basseng, August 2008, Evo Magazine conducted test.
7:29.03 Nissan GT-R (2009), Toshio Suzuki, 17 April 2008, Nissan Motors conducted test. The test used a stock GT-R with stock tires. Video confirmed.
7:32.0 Porsche 911 GT2 (2008), Walter Röhrl, 2007. Porsche conducted test, R compound tires used.
7:32.92 Ferrari 458 Italia, Sascha Bert, November 2010, Auto Bild Sportscars (11/2010)
7:33.00 Porsche 911 GT3 RS 997MkII, Horst von Saurma, Sport Auto (04/2010), PCCB
7:33.6 Koenigsegg CCX, Marc Basseng, August 2008, Evo Magazine conducted test
7:34 Koenigsegg CCR, Horst von Saurma, 17 October 2005, Sport Auto (03/2006)
7:34 Porsche 911 GT2, September 2008, Porsche conducted test, stock vehicle with stock tires
7:34 Nissan GT-R (2011), Horst von Saurma, October 2010, Sport Auto (11/2010),.
7:35 Ruf Rt 12, Sport Auto (02/2008)