2011 GT vs 2012 C6 Grand Sport

[Ivan 5.0]

So my buddy has a brand new, C6 Grand Sport Vette w/ the performance exhaust from the factory. We did a few rolls... started out at 40MPH for a few runs, and started out around 60 for a few; didn't do any digs.

Anyways, his car would slowly pull on me regardless of what gear I was in or what speed we were going. Nothing drastic, say 1/2 car max at faster speeds.

I have the following mods: C&L Air Intake System, Stainless Works Full Exhaust (1-7/8" LTs, catless XP, and catback exhaust), and Livernois tune. The car is a manual w/ 3.55 gears.

Does this sound right to ya'll?

 

[mrbigjeep]

i can believe that. some of those ls3's are trapping around 120mph aren't they?

 

[ArabianOak]

The LS3's are trapping 114-117. Sounds right to me.

 

[CobraKid04]

sounds legit to me.

what did your car put down? M6 LS3 dyno stock around 380-400rwhp.

are a bit heavier than the base vette at around 3320lbs.

 

[Ivan 5.0]

what did your car put down?

Last summer I had the car dyno'd and it put down 415/392 SAE

 

[da5deuce]

sounds legit to me.

what did your car put down? M6 LS3 dyno stock around 380-400rwhp.

are a bit heavier than the base vette at around 3320lbs.

I thought the GS vette was the base vette or did I read your post wrong if so sorry:shrug:

 

[da5deuce]

Last summer I had the car dyno'd and it put down 415/392 SAE

OP you think 4.10'son your car would make it a bit more of an even race?

 

[corysmach1]

Sounds about right good runs.

 

[NinjaBum]

I thought the GS vette was the base vette or did I read your post wrong if so sorry:shrug:

Grand Sport is otherwise known as the wide body. It's more expensive than the base C6 and has some extra flash added to the exterior. It does add extra weight which makes them the slowest stock LS3-powered corvette. It's amusing cause GS guys sometimes act as if their car is better than base c6 vehicles, when it's in fact slower.

 

[F8l Vnm]

not bad all! good runs

 

[bluebosss197]

The Grand Sport manual cars also have the dry sump oil system from the Z06/ZR1.

 

[NA_Cobra]

Grand Sport is otherwise known as the wide body. It's more expensive than the base C6 and has some extra flash added to the exterior. It does add extra weight which makes them the slowest stock LS3-powered corvette. It's amusing cause GS guys sometimes act as if their car is better than base c6 vehicles, when it's in fact slower.

Very true!

It also uses the Z51 tranny ratios, so it's quicker from dig.

 

[dirtyo2000]

The Grand Sport manual cars also have the dry sump oil system from the Z06/ZR1.

Beat me to it. That's what really sets it apart. Suppose to be able to pull better lap times and keep the oil there. I know it takes a few cues from the Z, also has the brakes if I'm not mistaken.

 

[BayareaSS]

Sounds right to me

 

[03CobraBro]

Grand Sport is otherwise known as the wide body. It's more expensive than the base C6 and has some extra flash added to the exterior. It does add extra weight which makes them the slowest stock LS3-powered corvette. It's amusing cause GS guys sometimes act as if their car is better than base c6 vehicles, when it's in fact slower.

I've noticed this too... not even a difference in suspension. The sad thing about it is for less than 5 grand more they could have just picked up a Z06 and put an end to the debate altogether.

 

[03cobrah]

nice runs!

 

[Jayls5]

I've noticed this too... not even a difference in suspension. The sad thing about it is for less than 5 grand more they could have just picked up a Z06 and put an end to the debate altogether.

They have different gears over the base, improved suspension over base (with some Z06 parts), Z06 sized brakes, dry sump oil system, Z06 body work (improves brake cooling), larger wheels/tires.

Basically, it's a Z06 with these differences: Dry sump LS3 engine, heavier steel base frame and fiberglass body, removable roof, and has auto trans option.

 

[F8l Vnm]

i honestly think the GS is a tad bit slower than a base model C6 from a roll . I think the base option C6's still weight around 3200 which is about 120 lbs lighter . Better aero drag too ? someone will have to comment on that , not sure

 

[F1reStart3r]

i honestly think the GS is a tad bit slower than a base model C6 from a roll . I think the base option C6's still weight around 3200 which is about 120 lbs lighter . Better aero drag too ? someone will have to comment on that , not sure

You are correct. IIRC the Z/ZR/GS Drag Co. is .31 and the base C6 is .29