mstan

It seems that by now somebody should have 0-60 and 1/4 mile times for the new A6. Does anyone?

mlongo99

GM says that for the A6...
0-60 4.5
1/4 mile 12.9 @ 110

Don't have their A4 numbers, but that should give you an idea.

*89x2*

...awhile ago, I thought someone posted the specs for each - including transmission gear ratios for both.

I think the 2005 automatic had "better" (steeper) gear ratios than the 2006 6/automatic has

With that in mind and all else equal, the 2005 should out accelerate the 2006, mathematically speaking

Devils Elbow

Just the opposite - A6 has the more aggressive overall reduction. ratios. Also listed the base MN6 ratios for comparison.

hennytime

when and where can you get these 6 speed tranny's and for how much, as well as can it be retrofitted to work with a fbody ls1?

LS WON

So does this mean the A-4 with 315's is the faster Corvette over the 6 speed auto with 2.56 gears?

JELSIS

No, the 6 speed auto should be quicker.

mikeyc6

The A6 has better torque multiplication than the A4 with 3.15 gears, will have more grunt off the line, and will keep the RPM in the sweet range more consistently. The A6 should be considerably quicker.

Mike

dollarbill

Bill

SHOOTER 49

If 12.9 is the et for the A6 It would not be ''considerably quicker'' as A4'S have run 12.7 and even one--ORANGE C6--as low as 12.5. Granted these were the best posted and verified times however with a lot of others---both mn6 and A4'S hitting 13.0/13.1. So we will need to see a multitude of ET's of the A6 to see if it is a performance boost or a fuel economy compromise. I ,for one ,would find a reason to trade my A4 for an A6 if it turns consistent 12.4/12.5's.

LS1LT1

Well 12.9 is the number posted by GM/Chevrolet/Team Corvette so it really isnt fair to compare it to A4 numbers attained from private owners in the real world which I have found to be typically faster than the manufacturers claims. In other words that 12.9 A6 car might've been running 12.6s (or maybe even 13.1s) if tested in the same conditions as that A4 car running 12.7s etc.

SHOOTER 49

I think that really sums it up. This forum compares numbers run all over the country at different times, places, altitudes, temperatures, track conditions, and humidity---with a variety of drivers. Until a bone stock is put along side a bone stock on the same track on the same day the numbers posted will never settle a damn thing.

v8ls2ca

I always thought the A6 will be quicker than the A4 3.15 Gears. Also just do a little modification like add more HP and it will be alot quicker. I have friends telling me to get M6 but I prefer A6. Can't wait to get one!!! By the way has anyone ever upgraded their C6 to 510HP like the package from Lingenfelter, also there's an Article in Car and Driver on more information. Seems like a good package very close to Z06 performace but very expensive. The only less expensive is the 366CID for 500HP.....

LS WON

I remember these figures as there was a list for the 2005 all models of times. I will have to look for it.

RBYCC

[PRESS RELEASE] 6 Speed Auto's


FOR RELEASE: 2005-10-26

CONTACTS

New Six-Speed Transmissions Begin Production At Revamped, Historic Willow Run Facility


YPSILANTI, Mich. - GM announced the start of production of a new, modular family of Hydra-Matic six-speed automatic transmissions for rear-drive applications at the upgraded Willow Run facility in Ypsilanti. The 6L80 six-speed transmission debuts in the 2006 Chevy Corvette, Cadillac STS-V and XLR-V, and several models of GM's all-new 2007 full-size SUVs.

Six-speed details

GM's new Hydra-Matic 6L80 transmission is the first of a new family of modular six-speed rear-drive transmissions. The transmissions feature two overdrive gears and a wide, 6.04:1 gear ratio spread to improve performance and fuel economy when compared with conventional four- and five-speed automatic transmissions. With two overdrive gears, engine rpm is reduced by approximately 9 percent at 60 mph - a reduction to about 1,500 rpm. Lower engine rpm can bolster fuel economy because less fuel is used. A lower-rpm cruising speed also enhances smoothness and reduces noise heard in the vehicle's cabin.
GM estimates the wide ratio spread can help cut 0-60 mph times by as much as 7 percent and enhance fuel economy by up to 4 percent.

Technically sophisticated clutch-to-clutch operation reduces complexity and packaging. It also enhances the performance feel of the transmission, as shifts feel more immediate and precise. It is a simple, less complex design that enables the six-speed transmission to be packaged in a size not much larger than a four-speed automatic.

clem zahrobsky

that 7 % difference is with the 4 speed and the 2.76 rear gear not the 4 speed and the 3.15 rear gear. GM power train had the specs on their website and the 0-60 with the 6 speed auto was slower than the 0-60 with the 4 speed auto and the 3.15 rear gear but the fuel milage was better. powertrain has since taken down the post.

LS1LT1

2.73 actually.
The chart in question also showed a very odd, what appeared to be a rolling start type, acceleration method/measure, not that it should really matter for quicker is quicker.

C6 ROLLER

The procharger cost around 7500 from procharger.com. I have an A4 with 2.73 gears and have no problem staying in front of other C5 and C6's. Both C6's had exhaust and air flow systems.

Black04Vert

The GM powertrain webpage that you refer to stated in text the 7% and 4% numbers above. The chart showed a graph containing IVM (initial vehicle movement)-60MPH. However, I think the chart was suckola because it showed the A4 w/ 3.15 hitting 60 in 3.9 seconds ... and we all know that never happened from IVM or a standstill.

Tommy D

and if we used corrected numbers the comparasion would be a bit more equitable