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How fast Automatic trans Grand Sport

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Old 07-15-2010, 12:58 AM
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qboy
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Default How fast Automatic trans Grand Sport

What's the 0-60 and 1/4 et/mph for a new Grand Sport with the Automatic Trans?
Old 07-15-2010, 01:07 AM
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lkelliott
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Originally Posted by qboy
What's the 0-60 and 1/4 et/mph for a new Grand Sport with the Automatic Trans?
It is a bit slower than the stock coupe and convertible. The car is heavier in the GS and the larger wheel and tires add to the unsprung weight of the GS which takes away horsepower from the GS model.

Kent
Old 07-15-2010, 09:20 AM
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redzone
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Originally Posted by lkelliott
It is a bit slower than the stock coupe and convertible. The car is heavier in the GS and the larger wheel and tires add to the unsprung weight of the GS which takes away horsepower from the GS model.

Kent
Your opinion or documented?
Because this is what Motor Trend had to say......

How better to explain the 0.2-second lead it enjoyed over the Z51 at the 60-mph mark (3.9 vs 4.1 seconds), which widened to 0.3 second and 2 mph at the quarter mile? If you're thinking it's the launch control and the improved traction of the wider (335/30ZR-19 versus the Z51's 285/35ZR-19s) Eagle F1 Supercars, you should know that the 0-30 times were identical, at 1.7 seconds.
Read more: http://www.motortrend.com/roadtests/...#ixzz0tky44QxX
Old 07-15-2010, 12:58 PM
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Originally Posted by redzone
Your opinion or documented?
Because this is what Motor Trend had to say......

How better to explain the 0.2-second lead it enjoyed over the Z51 at the 60-mph mark (3.9 vs 4.1 seconds), which widened to 0.3 second and 2 mph at the quarter mile? If you're thinking it's the launch control and the improved traction of the wider (335/30ZR-19 versus the Z51's 285/35ZR-19s) Eagle F1 Supercars, you should know that the 0-30 times were identical, at 1.7 seconds.
Read more: http://www.motortrend.com/roadtests/...#ixzz0tky44QxX
The OP asked about A6 times, not M6. But regardless, the MT article also stated: "The burble and snarl of the X-pipe dual-mode exhaust system (base cars get an H-pipe)...". Also makes one wonder how poorly they tested the (obviously older) Z51 they used for comparison. .3 better ET and +2 MPH? Oh sure!
Old 07-15-2010, 01:48 PM
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redzone
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Originally Posted by HOXXOH
The OP asked about A6 times, not M6. But regardless, the MT article also stated: "The burble and snarl of the X-pipe dual-mode exhaust system (base cars get an H-pipe)...". Also makes one wonder how poorly they tested the (obviously older) Z51 they used for comparison. .3 better ET and +2 MPH? Oh sure!
It's just a guess,but I'd wager you have the car that MT said was slower.....amirite?

It's funny how when a magazine shines a favorable light on the vehicle we own that it should be taken as gospel.....but when shown in a not so favorable way it's pure rubbish.

Me personally, I could not possibly care less which car is faster/quicker. But I did go to the trouble to do some reasearch vs just saying which was faster based on nothing other than my opinion.
Old 07-15-2010, 01:50 PM
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Old 07-15-2010, 01:53 PM
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FastGhost
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Guess I'll enjoy my '05 Z51 A4 with the SC on it with 561 RWHP/497RWTQ. Haven't gone to the track yet...but it is a fun street car...
Old 07-15-2010, 04:07 PM
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res0n0xg
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Originally Posted by redzone
It's just a guess,but I'd wager you have the car that MT said was slower.....amirite?

It's funny how when a magazine shines a favorable light on the vehicle we own that it should be taken as gospel.....but when shown in a not so favorable way it's pure rubbish.

Me personally, I could not possibly care less which car is faster/quicker. But I did go to the trouble to do some reasearch vs just saying which was faster based on nothing other than my opinion.
My base car has dual mode exhaust and an xpipe, funny. Not sure why they tested a car without dual mode exhaust and used that, but whatever. It's a magazine test .2/2mph can be explained by testing on different days, track conditions, etc.


To be honest, the cars are going to run damn near identical times in the 1/4 mile
Old 07-15-2010, 04:31 PM
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AirBusPilot
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My previous LS3 base car did not have NPP, but DID have the x-pipe.

The GS isn't any faster than any other LS3 corvette, base or not. It should be a tad slower due to it being heavier, But there is absolutely not one extra HP just because it's a GS.
Old 07-15-2010, 04:33 PM
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TysonJones
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Based on what I've seen the a6 ls3's have produced some of the faster 1/4 mile times. Most claims are around 3.9 to 60. If people have a problem with that, 4.0 is fine as well. You can't tell the difference. The thing gets up and goes though regardless. My theory has always been if a m6 guy misses a shift, they're done. We a6 guys dont really have to worry about that.
Old 07-15-2010, 04:38 PM
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Forgot to add, go check out the fast list.
Old 07-15-2010, 05:27 PM
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I believe you have to compare a 2010/2011 GS A6 to a base 2010/2011 C6 A6. The GS A6 has 2.73 rear gears whereas the base C6 A6 has 2.56 rear gears. The lower gear ratio in the GS will improve acceleration.

If you want to compare the 2010/2011 GS with the manual trans to a 2010/2011 base C6 with a manual trans then you need to look at the transmission gear ratios(both have the same 3.42:1 rear gear)

base C6 ratios are 2.664/1.783/1.302/1.000/.741/.502
GS ratios are 2.966/2.066/1.426/1.000/.710/.562.

As you can see the GS has lower gears (except in 4th) then the base C6 which will improve acceleration of the GS.

It's all about torque multiplication, and the GS is the winner.
Old 07-16-2010, 04:25 AM
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Originally Posted by redzone
It's just a guess,but I'd wager you have the car that MT said was slower.....amirite?

It's funny how when a magazine shines a favorable light on the vehicle we own that it should be taken as gospel.....but when shown in a not so favorable way it's pure rubbish.

Me personally, I could not possibly care less which car is faster/quicker. But I did go to the trouble to do some reasearch vs just saying which was faster based on nothing other than my opinion.
Sorry to burst your thought bubble, but not a Z51 or manual car here. MT wouldn't bother testing a base F55 A6 car, because it doesn't have the reputation of being the macho machine that their readers crave.

Just for grins I've checked several WOT scans and have a 0-60 time of 3.3 seconds, but I do have a few mods, so it's clear I have no dog in this fight.

When MT wrote the H-pipe comment, they lost all credibility. Then to say the 0-30 times were identical, but yet the GS was .2 quicker to 60 and credit that to hand-balanced (?) extra HP, is beyond belief.

The bottom line here is that the OP requested times for a GS with an automatic and the MT article tested manuals. Unless there is some documentation or dragstrip results, all we have is opinions.
Old 07-16-2010, 08:33 AM
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redzone
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Originally Posted by HOXXOH
Sorry to burst your thought bubble, but not a Z51 or manual car here. MT wouldn't bother testing a base F55 A6 car, because it doesn't have the reputation of being the macho machine that their readers crave.

Just for grins I've checked several WOT scans and have a 0-60 time of 3.3 seconds, but I do have a few mods, so it's clear I have no dog in this fight.

When MT wrote the H-pipe comment, they lost all credibility. Then to say the 0-30 times were identical, but yet the GS was .2 quicker to 60 and credit that to hand-balanced (?) extra HP, is beyond belief.

The bottom line here is that the OP requested times for a GS with an automatic and the MT article tested manuals. Unless there is some documentation or dragstrip results, all we have is opinions.
My apoplogies for assuming,we all know how that usually goes right?

What are your track times? With a 3.3 0-60,you should be solidly in the high 10's.
Old 07-16-2010, 10:08 AM
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Originally Posted by AirBusPilot
My previous LS3 base car did not have NPP, but DID have the x-pipe.

The GS isn't any faster than any other LS3 corvette, base or not. It should be a tad slower due to it being heavier, But there is absolutely not one extra HP just because it's a GS.
They included the x-pipe for all cars after a certain cutoff - my base '08 has it. Not sure if any late-year '07s have it?

The manual trans GS gets the hand-built motor and presumably they were getting more power from tighter tolerances - but I have yet to see it proven in the real world.

Last edited by jvinsepa; 07-16-2010 at 10:11 AM.
Old 07-16-2010, 10:58 AM
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Mike Campbell
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One cannot depend on the car mags like MT or C&D to really give you accurate times. Why, because some times they just guess at them when their driver can't hook up etc. I do recall reading a Corvette mag test of a GS vert with the A6 that ran a 12.3 @ 115 mph.
Now I agree with HOXXOH that things are not always what they seem and that they very seldom test base cars or the F55 either. Interesting though that Chevy put the F55 in the ZR1. I would think, that after the car is broken in, and you get some seat time, that a GS A6 would run consistantly in the low 12's with street tire. A good set of DR's & I would guess the 11.9's are possible. But, keep in mind, the base Corvette is lighter, and with the same equipment and rear, it should be quicker.

PS: I have a 2006 LS2 A6, with just a Vararam CAI & 160 stat & I ran a PB of 12.31 @ 116 mph...on street tires. That was in really good air, but, as I said, "I would not mocketh the base, because you may have your clock cleaned."
Old 07-16-2010, 11:01 AM
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Originally Posted by redzone
My apoplogies for assuming,we all know how that usually goes right?

What are your track times? With a 3.3 0-60,you should be solidly in the high 10's.
I lack the HP (and DA) for 10's, but the converter does give me the good launch. Consistant 11.5's at 121-122.

But, that only gives the OP an idea of the modded capabilities. He needs to look at the pinned fast list to see what a stock LS3 will do.

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Old 07-16-2010, 01:02 PM
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Mike Campbell
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HOXXOH: I lack the HP (and DA) for 10's, but the converter does give me the good launch. Consistant 11.5's at 121-122.

But, that only gives the OP an idea of the modded capabilities. He needs to look at the pinned fast list to see what a stock LS3 will do.

BINGO !!!
Old 07-16-2010, 01:48 PM
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Originally Posted by lkelliott
It is a bit slower than the stock coupe and convertible. The car is heavier in the GS and the larger wheel and tires add to the unsprung weight of the GS which takes away horsepower from the GS model.

Kent
No. It takes no "horsepower" away.
Old 07-16-2010, 03:09 PM
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BSE1956
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The term splitting hairs applies here.
A few pounds and a little more body/wheels & tires can easily be mitigated by variation from factory engine to factory engine.


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