true, but i know the speed display on mine is tiny. im not gonna try and read that at 170+. plus ive never looked at speed on mine under heavy acceleration im not sure if has lag to it.

 

But on the German Autobahns they can!!!

http://forums.corvetteforum.com/c6-z...-autobahn.html

 

True, and also in some peoples minds.

 

In all seriousness I am sure that each car can obtain different speeds under ideal conditions and there is no guarantee that what you achieve once is going to be the same second time around. I certainly love my car as I am certain each and every person here does theirs. I love all Corvettes and as far as I am concerned each and every model has it character and greatness. I certainly hate to see this discussion devolve into one of those " my car is better than your car " threads.... It's great to be able to own a Vette.... No matter what model or how fast it is

 

You misunderstood my GS comments completely. I happen to think they are awesome looking cars and I prefer the widebody look to the base car. My point(s) were two.

1. The aerodynamic drag of the wide body GS given the same engine as the base car will mean a somewhat lower top speed. That's not debatable. It's a fact.

2. GM has published top speed information on all C6 models except for the GS. My belief is that's because it's slower than the base model.

As for the LS9 being the same displacement as the LS3, well duh! It's blown for crying out loud.

You must just like to argue for the sake of arguing.

 

When I hit 162, I was in fifth gear, so the acceleration wasn't real fast. I had time to glance at my speedometer as I was accelerating and I saw 161/162 MPH which was confirmed by my GPS(GarminNAV) at 162 max speed. The speedo is quite accurate on our vettes. Nice thing about Talladega, The track is super wide, super smooth, and you don't have to worry about a deer jumping out in front of you. You can actually take your eyes off the track for a split second and not end up in a corn field.

After watching the in car video of BEZ06 running the Rolex24 course at Daytona, I'm heading down(with three additional Corvettes) there in December to run it. I'm hoping to duplicate BEZ06's 175 MPH crossing the start/finish line.

 

The 06 Convertible is rated at 186 mph

The hardtop is rated at about 188-190

 

Not really, I like to call it a spirited debate.

Looking at the numbers, it's hard to determine what the top speed of a Grand Sport might be, based on the improvements in top speed comparing the LS2 to the LS3 to the LS7

From the LS2 400 HP at 186 MPH, GM increased the horsepower by 36 and the top speed gained 4 MPH to 190.

For the Z06 LS7, GM increased the horsepower by another 69, added the wide body and wide tires, and the top speed gained 8 MPH to 198.

Lets review,

1) 36 hp gain = 4 MPH gain in top speed
2) 69 hp gain = 8 MPH gain in top speed.

Double(actually 96%) the horsepower gain and the gain in top speed was doubled.

Doesn't look like the wide body panels and the wide tires hurt the top speed of the Z06. If it had, I would have expected less then 100% MPH gain for the 96% increase in horsepower. So, should the wide body panel and wide tires hurt the Grand Sport? If so, by how much.

I've tried to debate using the numbers provided by GM. Care to respond by using the numbers.

 

While this doesn't answer the question directly, it does raise another. Does the hand assembled dry sump GS engine make a tad more horsepower than the base LS3? It sure looks that way when you see the results toward the end of the article:

"These engines are hand-assembled at the Wixom, Michigan engine assembly facility by a single technician that signs his work. The extra TLC enables the ’10 Grand Sport to run the quarter-mile in 12.1-seconds at 117-mph – astonishing!"
http://www.corvettereport.com/lookin...he-mighty-ls3/

 

I doubt the dry sump engine adds anything. For what horsepower that might be gained by the spinning crank not hitting oil, the engine has to turn two oil pumps. Since the same parts go into both versions of the engine(I'm taking, block, rods, pistons, heads etc) and the engine doesn't know (or care) if the crank is cast or forged at 430/436 HP. The final horsepower is the same(as verified by the SAE tests) whether the engine was built on an assembly line or batch built. The reason for the "improvement" in performance over the base C6, is that the Grand Sport has the same gearing as the defunct Z51 option.

The batch built assemblers do not do any special hand fitting of pistons to cylinders, or file fit rings, etc. They do not measure each piston and then measure each cylinder bore and then match the pistons to the cylinders, for example. Don't confuse a hand assembled engine with a blueprinted engine.

The reason the LS3 for the dry sump GS is built in Wixom is because of the low volume of engines that are dry sump. It is easier/cheaper for them to batch build the engines then screw up their highly automated assembly lines that produce the standard LS series engines used through the GM lineup.

They already have the facilities to batch build the other dry sump engines at Wixom and the different crankshaft, oil pumps, etc is not really suited for their automated assembly lines.

As my lawyer would say. "It's only fluff and it doesn't' meant a thing", regarding the TLC as stated by GM.

 

We really have to take anything GM says with a grain of salt. After all they have a s**tload of lawyers and a s**tload of marketing people.

Gm claimed the C5 coupe has a Cd of .29. Then when they introduced the C6 the Cd was claimed to be .287. Noticed how they managed to improve the Cd if only by .003.

A wind tunnel test was done on all five generations of Corvettes in a privately owned wind tunnel that is used by many of the NASCAR teams and other racers.

Their results from taking a stock C5 and a stock C6 off the street and measuring the Cd.

The C5 coupe measured .334.
C5 Z06 measured .373
The C6 coupe measured .343.
C6 conv measured .359

But then the area of the front of the car has to be considered. The C5 has 20.7 sq ft, the C6 has 21 sq ft. So much for the narrower C6 helping the C6. Of course the 1.4 " increase in the C6's height factors into the frontal area.

They didn't measure a C6 Z06 and the tests were performed before the Grand Sport was released for 2010.

I don't know if there is a procedure for standardizing windtunnel test(like the new SAE test for engine dyno's) or if they are like chassis dyno's where you can't really compare the results of two different dyno's, but you can compare different pulls on the same dyno at the same time.

What is interesting is that the C6 has higher numbers then the C5(without the headlights up), unlike what GM claims. Also, when the C6 Z06 was released in the summer of 2005(2006MY) GM said it had a Cd of .31. Later they changed that to Cd .34, They did nothing in the way of changing tires or body panels that would have affected the aero. So, why did they change the Cd? Was it because they said later that the ZR1 had a Cd of .35 and they didn't want it to look as bad compared to the Z06? After all, the ZR1 has a different front splitter, wider tires, running boards and a larger rear spoiler. GM claims the downforce on the ZR1 is much greater the the Z06's.

Would GM fudge the numbers? I don't know.

 

180 but it would take all day to get up there.

 

Three things are certain: (1) if the hand assembled engine with the dry sump developed even one horsepower more than the standard LS3, GM would have advertised it to further justify the 12% greater price they charge for the G/S; (2) since they advertise the top speed of all the other model Corvettes on their web site they would have also stated the top speed of the G/S even if it were only equal to the Base Vette, so the top speed of the G/S is obviously an embarassment to them; (3) if you know anything about the laws of physics and aerodynamics you would realize that a car with a higher coefficient of drag, and a larger frontal area, and which has higher rolling resistance due to its tires and due to the fact and it is heavier (rather than lighter like the Z06) than the standard models, the G/S models simply cannot be as fast as the base models; it must be S-L-O-W-E-R!!! So now the only remaining alternative for G/S fans is to say acceleration at higher speeds, and top speed is simply unimportant and of no consequence. This sort of thinking is fine for Prius owners but seems rather inappropriate for people who claim or pretend they are into high performance sports cars.

 

Give it a rest jackhole! Your GS bashing is pathertic at best. Do us ALL a favor and quit the forum.

 

Reading from the script again?

 

Just stating facts "Racer". I know you dislike factual information, but that is your problem, not mine. Oh, and clean up your act; calling other Forum member insulting names is against the rules of the Forum, as well as a sign of disrespect. Have a nice day.

 

Wrong direction to attack this from. Even bringing the Z06 into the debate is comparing apples to oranges.

All Corevette are drag limited. Giving the identical HP and Torque curves between between the base and GS with the base having a drag coeficent of .28 and the GS with .32 the GS will be slower. It is simple physics.

But can someone answer this, does the GS have the same gear set as the Z51? If it does it would then be a wash IMO.

 

Naw, it's all original.

 

Yes, the GS has the same gearing as the Z51.

 

FACTS?

You are saying it is a fact that GM is embarrassed of the GS?

Well, I say not only are you a Jackhole, you are a LIAR and of course, a GS TROLL.