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Discussion Starter · #1 ·
I made it back to Atco for a track rental put on by the NJFBOA guys. Brian was kind enough to make a slot for me.
Car is a bone stock '14 Corvette Z51, A6 with MSRC and NPP on stock Michelins.

I only made 6 passes today. I spent the weekend hauling @ss around Sebring International Raceway and flew back up to NJ late last night, so I wanted to get in and back out of Atco quickly. The car didn't really get extended cool down times, and I was looking at coolant/engine temps on the DIC and they were in the ~130-140* range ("S" mode DIC display) before I pulled out of the pit to make any passes. I ran doubles, so three passes were fresh and three were hotlapped (the 11.51 was hotlapped). The LT1 doesn't seem to fall down very much on back to back passes.

Air was, predictably, very good. It's unseasonably cold and the DA was very nice. This was from 12:54 (close to when I ran one of passes shown on slips):


Because the air was so good, I was hoping to improve on the 11.67 from a few weeks ago, I was not disappointed (but would have like to have seen an 11.3):



(Note that Atco's dates are still wrong, just as they were a few weeks ago. They also did not adjust their clock for Daylight Savings Time.)

Interestingly, on the 11.49 pass, the car 'hiccupped' on the 3-4 shift. Basically, it touched the limiter for a split second before shifting, was very strange and I would guess that trap speed would have been over 120 mph based on the 1/8 speed. Interestingly (or not), my '12 GT-R did this a few times when it was stock.

I ran the car in automatic mode in "Tr" all day with the exception of the last pass. I decided to manually shift and bumped the limiter on the 1-2. Since the track was sort of going away (cut a 1.76 and spun slightly on that pass), I decided to call it a day. That was the slowest pass of the day at 11.754 at 119.58 mph. It also went an 11.54 and an 11.58. The car had ~1/4 of a tank of fuel when I got to the track and just over 1/8th when I left. Once again, I didn't touch the tire pressure or pull any tricks. It was parked in the pits all day with the hood open, plenty of people taking pictures. I know there were some people taking video, but not sure what passes they got. A friend of mine was going to go, but decided to just take the day off work instead.

I am hoping to get the car back out a few more times before the tracks close for the season. IMO there is more in it, and I haven't even started playing around with stretching out the shift points by manually shifting or launching the car with any rpm.

Think this is a pretty good pic taken by a guy shooting pics at the track. He gave me a hardcopy for $20 and I scanned it:


S.
 

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Snorman, welcome to StingRay forums! Have seen some of your other posts elsewhere, and you have a lot of good information to share. It will be good to add your knowledge and experience to StingRay forums.
 

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Thanks for posting Snorman! Nice runs. Glad to have your input at our forum. :cool:
 

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For those who do not know, "Snorman" is one of our greatest, current era, Corvette drag racers. He consistently blows away GM's times and all others in an "apples versus apples" drag race!
 

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Wow the Autos are "Holy Shit" fast!!
That tight 1st gear gets them out the hole incredible.

Autos seem to have the better gear ratios for it.. Tight first then finish in 3rd.
Manuals have wide first gear. Then at 105mph u shift to 4th gear that is extremely wide. 4th Goes to 151mph..
 

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Discussion Starter · #6 ·
Wow the Autos are "Holy Shit" fast!!
That tight 1st gear gets them out the hole incredible.

Autos seem to have the better gear ratios for it.. Tight first then finish in 3rd.
Manuals have wide first gear. Then at 105mph u shift to 4th gear that is extremely wide. 4th Goes to 151mph..
I agree, the gearing in the A6 cars is great for drag racing.
I also think GM has made some very meaningful changes to the A6. We know they went to a new, smaller torque convertor and not only is the shift logic nicely aggressive, but the car almost feels like the convertor locks up about 50-60' out of the hole. It's almost as if the car down shift...very neat and strange.
S.
 

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I agree, the gearing in the A6 cars is great for drag racing.
I also think GM has made some very meaningful changes to the A6. We know they went to a new, smaller torque convertor and not only is the shift logic nicely aggressive, but the car almost feels like the convertor locks up about 50-60' out of the hole. It's almost as if the car down shift...very neat and strange.
S.
Yeah I heard chevy retuned them. I know when my dad got a tune with his camaro auto it was night & day. Shifts were fast..
Smaller converter probably saved some weight too. .

Thinking I need some 3.73 gears to match u lol.
I havent had a good run yet. :'(
Did a 12.1 @ 116mph with a little left in it from a slow roll thru beams. Maybe could got a 12 flat that day at island. But it will never run like urs with out doing some mods lol
 

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Discussion Starter · #8 ·
I think the torque management is killing the M7 cars. The same problem exists with the '13/'14 GT500's, otherwise we'd be running very low 11's in them.
IMO people will have to learn how to drive around it. Not sure if there are benefits to running in certain PTM modes or not. With the GT500's, running the car in "Sport" mode and using the factory LC mitigates some of the factory programming the drastically pulls throttle angle when the PCM detects clutch slip. All of my passes in my '13 were running it in that mode and I went a best of 11.3 (#2 on that Fast List).
S.
 

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A good read! Did you drop your rear tire pressures, or just run it @ stock OEM inflation pressures? What about air filter? Stock?
 

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Discussion Starter · #10 ·
A good read! Did you drop your rear tire pressures, or just run it @ stock OEM inflation pressures? What about air filter? Stock?
100% bone stock and untouched. Rear tire pressure as OEM.
S.
 

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Discussion Starter · #14 ·
Its auto.. no skill required lol
Which means there should be lots more running similar times in coming months.
I think the A6 cars are going to be very hard to beat at the track, and even more of a handful with a few carefully chosen mods. IMO, we'll see 10-second cars with nothing more than headers/midpipe and a tune.
S.
 
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Which means there should be lots more running similar times in coming months.
I think the A6 cars are going to be very hard to beat at the track, and even more of a handful with a few carefully chosen mods. IMO, we'll see 10-second cars with nothing more than headers/midpipe and a tune.
S.
I agree. Great track prep. & there will be autos in 10s with headers, cam & tune
Actually I think a manual did it with those mods. So maybe just headers & tune
 

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Do you guys with an auto tranny plan any ECU tweaks on the shift mapping? If so, what kind of changes would yield the best results?
 

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Discussion Starter · #17 ·
Do you guys with an auto tranny plan any ECU tweaks on the shift mapping? If so, what kind of changes would yield the best results?
If anything, it might be able to stretch out the shiftpoints a bit. I haven't even began playing with manual shift mode. Tommy (the 9-second A6 car) was manually shifting his car when it went 11.6.

The car is soooo easy to get down the track with the A6. You could make a pass and eat a sandwich at the same time. I'm used to a more challenging endeavor...I had a 900+ rwhp Viper GTS that went 9's on street tires and pump gas, an 816 rwhp '03 Cobra that still had the factory 6-speed/IRS and went low-10's (and that was a hairy ride, with the car often getting loose at ~1000' and out of the groove) and a number of other 5/6-speed cars. This thing is just a point and shoot.
S.
 

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Discussion Starter · #20 ·
3.4-3.5 0-60 mph as verified and recorded by Vbox.
S.
 
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