Who is running the A8 at the drag strip?
09-05-2014, 08:13 PM
#1
Race Director
Thread Starter
Who is running the A8 at the drag strip?
Just wondering how it runs. How the tranny handles the extra gears at WOT. I know its hot still and the best times are still months away but just wondering how they will trap/ET vs the A6 
09-05-2014, 11:06 PM
#3
Safety Car
The A8 should trap the same or just a little better. Just don't rely on the magazine times.....mostly estimated numbers for right now. If the A8 becomes two tenths faster then I suspect a little more horsepower or a tremendous re-flash of the computer. Anyway, one tenth and one mph better is no big deal.
09-06-2014, 12:17 PM
#5
Melting Slicks
I'm interested as well but there hasnt been a whole lot of A6 times either, when fall comes and internet ET weather rolls around I'm sure there will be plenty of numbers for both.
09-06-2014, 01:15 PM
#6
Moderator/Tech Contributor
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2015 C7 of the Year Finalist
Well, here is the gearing, calculate it for yourself! 
Transmission and rear gearing 2005-2015
Looks to me that it might be quicker, especially if you have the Z51.
Transmission and rear gearing 2005-2015
Looks to me that it might be quicker, especially if you have the Z51.
09-06-2014, 02:14 PM
#7
Le Mans Master
09-08-2014, 11:03 AM
#10
Race Director
Thread Starter
No one ran this weekend 
09-08-2014, 11:07 AM
#11
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Member Since: Jun 2001
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09-08-2014, 01:51 PM
#12
Melting Slicks
Well, here is the gearing, calculate it for yourself!
Transmission and rear gearing 2005-2015
Looks to me that it might be quicker, especially if you have the Z51.
Transmission and rear gearing 2005-2015
Looks to me that it might be quicker, especially if you have the Z51.
Just for fun I plugged the numbers into a pretty sophisticated drag racing sim, used to use it to figure out combinations for doing well in NHRA comp eliminator. Like any other computer program accurate data is a must, but I just used 3500lbs for weight, 26" tall street tires, 2600 stall, sea level and aerodynamic numbers from a C6. Used calculated engine/torque curves based off of peak numbers.
All I did was change the rear gear ratio and the transmission ratios between the 6 and 8 speed.
60 foot is off, I just used street tires so traction factor is low, but you can kind of get an idea of what changing the final drive and adding trans ratios will do in a 1/4 mile.
09-08-2014, 05:52 PM
#13
Race Director
Thread Starter
09-11-2014, 07:58 PM
#14
Race Director
Thread Starter
09-15-2014, 02:10 AM
#16
Race Director
Thread Starter
09-19-2014, 04:54 PM
#17
Race Director
Thread Starter
A guy in C7 General is going tonight with his A8, guess we will see results soon!
09-20-2014, 03:31 PM
#18
Race Director
Thread Starter
From a thread in C7 General-
I'm the Brother, my name is Ben Charles, been using this screen name for over 10 years on Ls1tech and a number of other forums. I'm also on HP Tuners Forum under my real name as well, as I do professional GM Calibrating.
Ive been a member here for a while just never post, so now is as good as a time as ever.
The DA for the night with Track Elevation of 273 and temp in the high 70's most of the Nigt DA was around 1500 on my best pass. Made 4 total runs. PDR 2 runs and GM' PDR seems to be about 2 tenths off from actual 1/4 times (slower) but that could be b/c of wheel spin??
First pass ran 11.90 at 117.33, Nervous as hell and I missed the booth to pic up the timeslip, bet felt great. I can for sure FILL the TQ management of this thing.
Next 2 passes one by me and other by jeff were 12.1x at 116-117 with my 60 going 2.007 and his high 1.8x. Then I decided to let the car cool even long (about an hour). Me and Jeff weigh around 160-170 so the cars race weight on these pulls were about 3350, b/c it had less than 1/8 of fuel.
Met up with another C7 owner who wanted to race his convertible 14 A6 who he claimed to be stock but had NO TIME showing and I happen to get a look at his timeslip when we lined up.
I started talking to the other C7 owner and we got on the subject of Traction control, APPARENTLY I wasn't disabling the traction control all the way!!! Instead of holding the button I just pushed it once to see T/C on the dash as opposed to holding the button and seeing both lights disabled (newb mistake). SO I was a little excited to try it out on the race against him. AT this time Jeff had already left and we put 4 gallons of 93 in he tank.
Pulled a 11.85 at 118.3 with a 1.82 spinning pretty good. I got him the light and never looked back. I'll post the time slip later and the PDR video (have to figure that out??) He ran 11.84 (crappy light) at 122.06 with a 1.92 60 (guessing he had a tune an CAI, he wouldn't pop the hood.
I post more info later, just wanted to get the info out there.
Met some really cool vette guys too. Be back after awhile
Ive been a member here for a while just never post, so now is as good as a time as ever
.The DA for the night with Track Elevation of 273 and temp in the high 70's most of the Nigt DA was around 1500 on my best pass. Made 4 total runs. PDR 2 runs and GM' PDR seems to be about 2 tenths off from actual 1/4 times (slower) but that could be b/c of wheel spin??
First pass ran 11.90 at 117.33, Nervous as hell and I missed the booth to pic up the timeslip, bet felt great. I can for sure FILL the TQ management of this thing.
Next 2 passes one by me and other by jeff were 12.1x at 116-117 with my 60 going 2.007 and his high 1.8x. Then I decided to let the car cool even long (about an hour). Me and Jeff weigh around 160-170 so the cars race weight on these pulls were about 3350, b/c it had less than 1/8 of fuel.
Met up with another C7 owner who wanted to race his convertible 14 A6 who he claimed to be stock but had NO TIME showing and I happen to get a look at his timeslip when we lined up.
I started talking to the other C7 owner and we got on the subject of Traction control, APPARENTLY I wasn't disabling the traction control all the way!!! Instead of holding the button I just pushed it once to see T/C on the dash as opposed to holding the button and seeing both lights disabled (newb mistake). SO I was a little excited to try it out on the race against him. AT this time Jeff had already left and we put 4 gallons of 93 in he tank.
Pulled a 11.85 at 118.3 with a 1.82 spinning pretty good. I got him the light and never looked back. I'll post the time slip later and the PDR video (have to figure that out??) He ran 11.84 (crappy light) at 122.06 with a 1.92 60 (guessing he had a tune an CAI, he wouldn't pop the hood.
I post more info later, just wanted to get the info out there.
Met some really cool vette guys too. Be back after awhile
09-20-2014, 03:34 PM
#19
Race Director
Thread Starter
Cliff notes-
DA @ 1500
4 runs made-
First pass 11.90@117.33
2 passes 12.1x@116-117
Best pass 11.85@118.3
Great runs by Z51 6spd and T/A KID, thanks guys!!!
Full thread-
https://www.corvetteforum.com/forums...post1587870778
DA @ 1500
4 runs made-
First pass 11.90@117.33
2 passes 12.1x@116-117
Best pass 11.85@118.3
Great runs by Z51 6spd and T/A KID, thanks guys!!!
Full thread-
https://www.corvetteforum.com/forums...post1587870778
Last edited by tail_lights; 09-20-2014 at 03:38 PM.
09-20-2014, 03:48 PM
#20
Scraping the splitter.
I think people who believed there were going to be big differences in acceleration between the A6 and A8 cars are going to be disappointed.
S.
S.
