A8 in GS different ratios than A8 in Z06?
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Z06Norway (08-07-2018)
08-07-2018, 08:52 AM
#3
Melting Slicks
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Z06 have only 3.41
as far as i could find out on GMs web page.
GS with a 3.73 and A8 would be fun together with 650 NA horsepower 417 LPE or Katech 703 HP 427 😃😃
08-07-2018, 10:26 AM
#4
Melting Slicks
The A8 Z06 comes with a 2.41
Those are the standard ratios and there are no options.
08-07-2018, 05:38 PM
#5
Melting Slicks
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I read GMs build your own car different....
guess a 2.73 in a GS means quicker get go than 2.41 ... IF both have the same tq and power...
3.41 must be manual for both?
tia
RY
08-09-2018, 12:13 AM
#6
08-30-2018, 04:09 PM
#8
Yes, yes it can...
08-30-2018, 08:39 PM
#9
08-30-2018, 10:54 PM
#10
According to the specs, my 2019 Grand Sport, A8, has a 3.42 e-limited slip rear. Also checked 2019 GS for sale and it appears on the window sticker of other new Grand Sports for sale. Sound right?
Last edited by JDSpeed; 08-30-2018 at 10:56 PM.
08-31-2018, 01:10 AM
#11
08-31-2018, 05:40 PM
#12
09-03-2018, 01:10 AM
#13
Looking like a 3300.00ish proposal at my local dealer(trusted mechanic there).. that is with new rear diff installed. He said he could reprogram the cal# from the rear diff and ESD should work fine. Just debating if the cash outlay is worth the performance gains. Do we have anyone who has quantifiable results from the 3.42 swap on the A8 setup?
09-04-2018, 07:51 AM
#14
I believe Robert Miller has done the 3.42 a8
C7&7 has done the 2.73 m7
John
C7&7 has done the 2.73 m7
John
09-05-2018, 08:45 PM
#16
Team Owner
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St. Jude Donor '05
Bet its night and day (in a good way)
03-24-2019, 04:13 PM
#17
so is the dyno 1 to 1 gear different in the A8's from the grand sport to the z06? I have heard 4th and 5th gear are 1 to 1, which is it?
03-24-2019, 04:51 PM
#18
No, trans gearing is the same, so 1:1 gear is still 6th gear. Rear gear is different.. 2.41 vs 2.73 in the GS/Z51. Many dyno in 5th gear because some dynos/operators will not go that fast.. or feel its unsafe. 5th gear will show around 20-25rwhp less than 6th.
03-24-2019, 05:04 PM
#19
wait, so 6th is 1 to 1? I thought it was 5th.
and 4th is 1 to 1 on manuals?
and 4th is 1 to 1 on manuals?