1. How many 2010 Grand Sports were built?

2. How can you identify a genuine 2010 Grand Sport Corvette?

3. I own a 2010 Grand Sport Corvette. Where can I find my GS number?

4. I need touch up paint for my C6 Grand Sport. Where can I find it?

5. How can I get a copy of the original Window Sticker and Build Sheet?

6. I'm looking for a reliable auto transport company to ship my pride and joy. Any recommendations?

7. How do I calculate the effects on MPH and RPM if I should change my rear axle ratio or tire sizes?

8. What is the NPP Dual Mode Exhaust Option and how does it work?

1. Q: How many 2010 Grand Sports were built?

A: Production numbers will not be available until the end of the model year. We will post that information as soon as it is available.

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2. Q: How can you identify a genuine 2010 Grand Sport Corvette?

A: As most everyone here knows, identifying a genuine 1996 Grand Sport Corvette is fairly easy, thanks to its blue and white paint scheme and more immportantly, a unique VIN sequence, distinct from regular production Corvettes of that year. The 12th digit of the VIN must be a "6" followed by the production number ranging from 00001 to 01000.

But how do you identify a genuine 2010 Grand Sport? Sure, the car comes with unique body panels and trim items, but those can be installed on any C6 Corvette and unlike the 96, the C6 GS does not have a unique VIN sequence and can be had in multiple colors. But after some diligent research, the GSR has found that you CAN identify a genuine 2010 GS by the 5th character in the VIN. Unlike the '96, there's a mess of possible variations, but at least is is possible:

• A - STANDARD 1LT (MANUAL)
• B - PREFERRED 2LT (MANUAL)
• C - PREMIUM 3LT (MANUAL)
• D - CUSTOM 4LT (MANUAL)
• E - STANDARD 1LT (AUTO)
• F - PREFERRED 2LT (AUTO)
• G - PREMIUM 3LT (AUTO)
• H - CUSTOM 4LT (AUTO)
• J - Z06 STANDARD 1LZ (MANUAL)
• K - Z06 PREMIUM 2LZ (MANUAL)
• L - Z06 CUSTOM 3LZ (MANUAL)
• M - ZR1 STANDARD 1ZR (MANUAL)
• N - ZR1 CUSTOM 3ZR (MANUAL)
• P - GRAND SPORT 1LT (MANUAL)
• R - GRAND SPORT 2LT (MANUAL)
• S - GRAND SPORT 3LT (MANUAL)
• T - GRAND SPORT 4LT (MANUAL)
• U - GRAND SPORT 1LT (AUTO)
• V - GRAND SPORT 2LT (AUTO)
• W - GRAND SPORT 3LT (AUTO)
• X - GRAND SPORT 4LT (AUTO)
• 9 - EXPORT ONLY

3. Q: I own a 2010 Grand Sport Corvette. Where can I find my GS number?

A: Unlike the 1996 Grand Sport, the 2010+ C6 Grand Sports do not "sport" a unique VIN sequence number (see FAQ #2, above). But not to be outdone, we identify individual C6 Grand Sports by the last 5 digits of their VIN, e.g., 10GS08624.

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4. Q: I need touch up paint for my C6 Grand Sport. Where can I find it?

A: Correctly matching touch-up paint for all factory GM colors may be ordered from our GSR approved vendor at:

Click HERE to order GS Touch-Up Paint

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5. Q: How can I get a copy of the original Window Sticker and Build Sheet?

Duplicate window stickers and build sheets may be ordered from the National Corvette Museum at www.corvettemuseum.com. NCM Members get a discount. You ARE a NCM member, right? ;-)

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6. Q: I'm looking for a reliable auto transport company to ship my pride and joy. Any recommendations?

Based on the experience of GSR Members, we can recommend the services of the following highly reliable and professional auto transport companies:

• Exotic Car Transport, Orlando, FL: http://www.exoticcartransport.com/
  
• InterCity Transport, Warren, MA: http://www.intercitylines.com/
  
• Thomas Sunday, Inc, Mechanicsburg, PA: http://www.sundayautotransport.com/

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7. Q: How do I calculate the effects on MPH and RPM if I should change my rear axle ratio or tire sizes?

Try using this handy online calculator at http://www.angelfire.com/fl/procrastination/rear.html.

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8. Q: What is the NPP Dual Mode Exhaust Option and how does it work??

NPP is the Regular Production Option (RPO) code for the Dual Mode Exhaust Option first offered to non-Z06 Corvettes in 2008 as an $1195 option. LS3 engines equipped with NPP get a bump in horsepower rating from 430 to 436. Modeled after the exhaust on the Z06, the exhaust uses a butterfly valve over one of the exhaust exit pipes (two total, one per muffler) to vary the exhaust output. It works similar to exhaust cut-outs popular on the street rods.


The exhaust control is operated by engine vacuum pressure. The system is tied to the pcm and monitors rpm and throttle position to measure "driver intent". Under normal circumstances the exhaust valve is closed and it routes the exhaust gas out of the other pipe after it passes through the baffle chamber of the exhaust. In this case it is quieter. If the driver accelerates hard the valves will open at 2,800 rpm as long as the driver is above 80% throttle. Between 30% and 80% throttle the exhaust will open during acceleration at 3,500 rpm.

The valves will be open for the first two seconds that the car is started. It requires time for the vacuum pressure to build to close the valves. After that The operation of the NPP is normally closed, open on demand. Have someone stand behind the car and bring up the RPM to 3,500 and you should see the valves open. The butterfly operation is tied to the throttle position sensor and the RPM. It uses the throttle position to determine driver intent.

Under normal operation the valves work as follows:

• Below 30% throttle and 3,500 rpm the valves are closed
• Above 30% throttle and 3,500 rpm the valves will open
• Between 30% throttle and 80% throttle and above 3,500 rpm the valves are open
• Above 80% throttle and above 2,800 rpm the valves are open

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