04-21-2016, 12:46 PM | #127 |
Drives: 2022 F150, 87 Monte Carlo Join Date: Mar 2015
Location: MN
Posts: 1,267
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04-21-2016, 12:52 PM | #128 | |
Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010
Location: Little Rock, AR
Posts: 7,129
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Quote:
Most of the complaints of overheating transmissions have been with the Z51s, which lacked some heat exchangers found on the Z06. They fixed that in the 2016 MY. When I was there we had 5 Z06s and about 15 Z51s. Two of the Z06s were auto and I think 3-4 of the Z51s. Not a single one had a transmission overheat or reduced power from heat soak. I asked the lead instructor how often either problem occurs for them and he said the heat soak issue is because of poorly bled intercoolers on the Z06s and they have never had a single automatic overheat. He suspected it was people leaving them in automatic instead of manually shifting them. I will say, they would call you out over the radio for everyone to hear if you engine braked, and he said that was because it was hard on the transmissions. Maybe that will lead to overheating as well. BTW, the fastest lap turned for my class was a A8 Z06...by a big margin!
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04-21-2016, 12:57 PM | #129 |
Drives: 2014 2LS (traded in) 2015 1SS 1LE Join Date: Apr 2015
Location: New York
Posts: 2,132
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Don't go there. I tried to teach her stick in a Hyundai Elantra in an empty parking lot and the cops showed up......
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04-21-2016, 12:58 PM | #130 |
Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010
Location: Little Rock, AR
Posts: 7,129
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New Ride -- 2015 Z06 2LZ (stock) -- Journal
Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread |
04-21-2016, 01:51 PM | #131 |
Drives: 1970-1/2 Z-28, 2017 ZL1 Join Date: Sep 2012
Location: Sanford, Fl
Posts: 973
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The A8 is a nice transmission for the street. It is not a track transmission, I can attest to its inability to keep the car in the power range needed to exit corners optimally. I can also attest to the delay in downshifting using the paddles. BUT, I can tell you it works well just slamming the throttle for 1320' and even its current state shifts quicker than I can manually so it has its place. I firmly believe that A10 is being put into the ZL1 before the Vette specifically to address the A8's deficiencies on the road course and I believe the 1LE will not be available with the A8, further evidence that the A8 has it's issues on a road course. HOWEVER, to be clear, I do not think the A8 is garbage. I think it is not well positioned on a road course. I hope the fact that GM is confident enough in the A10 to put it into the ZL1 shows that the transmission is ready to live up to the hype. A less than stellar road course performance in the SS is one thing. A less than stellar performance in your "excel at everything". "take on the world" car is quite another so I think Team Camaro knows what is at stake here and I expect them to deliver with the A10.
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04-21-2016, 04:25 PM | #132 |
#becauseracecar
Drives: 2016 SS Sedan, 2016 Camaro SS Join Date: May 2015
Location: Phoenix
Posts: 2,959
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An honest question for you. If the rpm spread in the A8 is smaller than the M6, and you can manually shift the A8, wouldn't it be the drivers inability to keep the car in the correct power range that is the issue? I would think even with a very slight delay in shifting, a good driver would be able to have it in the correct gear well before apex and exiting the corner. I've never tracked an auto so I could be well off base.
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04-21-2016, 04:55 PM | #133 | |
Drives: 1970-1/2 Z-28, 2017 ZL1 Join Date: Sep 2012
Location: Sanford, Fl
Posts: 973
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Quote:
I will admit, I am not an expert on driving autos on a road course BUT I have driven an auto GTR, M4, C6, and a S4 and found them much more responsive and "intelligent" in keeping the car in the power band throughout the course. If I was Randy Pobst I might be able to get a better result but the reason I got in the car in the first place was that my buddy who owns it was getting frustrated and new I had more experience than he did and wanted me to see if I could get a better result than he was getting....I did not. |
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04-21-2016, 05:02 PM | #134 | |
#becauseracecar
Drives: 2016 SS Sedan, 2016 Camaro SS Join Date: May 2015
Location: Phoenix
Posts: 2,959
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Quote:
Thanks. That makes sense. Like I said, I've never tracked an auto (plenty of manuals) but I have obviously done some spirited heavy braking turns on the street with my 335i A8 and my wifes Q60S A7 that both have paddle shifters and I can definitely confirm that at those deceleration speeds, it's extremely easy to not have any clue how many times you've pulled on the paddle and forget which gear you've gone into. And at that point I don't want to concentrate on looking at what gear I'm in, I want to be concentrating on hitting the apex and my other marks. Thanks again. |
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04-21-2016, 05:16 PM | #135 | |
Drives: 1970-1/2 Z-28, 2017 ZL1 Join Date: Sep 2012
Location: Sanford, Fl
Posts: 973
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04-21-2016, 06:36 PM | #136 | |
Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010
Location: Little Rock, AR
Posts: 7,129
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Quote:
1) When you need to downshift several gears at once, hold the left paddle down. It will choose the best gear for your speed assuming you are going to start your turn in. 2) Brake to your turn in speed hard and befor you start the turn. Keep your wheel straight as you shift. 3) Don't up shift in the turn, you should be throttle steering to keep you on line to hit the apex. 4) Accelerate as you unwind and shift when the wheel is straight and you are aimed toward you next turn in or near apex. It takes some practice, but the shifts are amazingly fast when you get it right.
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04-21-2016, 06:40 PM | #137 |
Drives: ZL1 Join Date: Jun 2012
Location: USA
Posts: 288
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The A10 is for better mileage plain and simple, do you really want to paddle 10 gears? The A8 is an excellent tranny.
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04-21-2016, 06:46 PM | #138 |
Drives: 1970-1/2 Z-28, 2017 ZL1 Join Date: Sep 2012
Location: Sanford, Fl
Posts: 973
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04-21-2016, 06:47 PM | #139 | |
Drives: 1970-1/2 Z-28, 2017 ZL1 Join Date: Sep 2012
Location: Sanford, Fl
Posts: 973
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Quote:
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04-21-2016, 06:48 PM | #140 |
HAMMER PILOT
Drives: 13 ZL1#182, 85 CJ7, 16 Silverado Join Date: Nov 2011
Location: Tucson AZ
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Ask the GM engineers, they loved it and emphasized the shifts in the videos. Lightning quick and they stated a max drop of 800 rpms between shifts keeping the engine in its sweet spot.
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