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C7 ZR1 M7 or A8 for track?

 
Old 05-11-2019, 11:36 AM
  #21  
94Lt1Vette
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I tracked my 2018 Camaro ZL1 with A10 and that transmission was shockingly fast (arguably better transmission than the A8) around the road course. It was always in the right gear and had no lag whatsoever. It's faster on both the drag strip and road course than the M6 ZL1. I am sure the A8 has a similar advantage (albeit not as much) over the M7, but I ordered the M7 anyway for my ZR1 ZTK. AFAIK, this is the last of the FE, Manual transmission RWD ZR1 Corvettes. I wanted the fun of shifting in a car that will eventually be a classic to hold onto - even if it is slightly slower.
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Old 05-11-2019, 09:38 PM
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Originally Posted by 09Z06pj View Post
I had, and still have the opportunity to buy two different A8 ZR1's (one is 10K under sticker and the other 8K under) and chose to pass on both. I don't track my cars and just like to play a bit on early morning back roads etc. For me, it's the fun and pleasure of driving and I just don't get that from an automatic. I came close to buying one of the A8's but knew deep down it wouldn't work for me.

Good prices.

Ordering an M7?

D.
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Old 05-11-2019, 10:06 PM
  #23  
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Originally Posted by 94Lt1Vette View Post
I tracked my 2018 Camaro ZL1 with A10 and that transmission was shockingly fast (arguably better transmission than the A8) around the road course. It was always in the right gear and had no lag whatsoever. It's faster on both the drag strip and road course than the M6 ZL1. I am sure the A8 has a similar advantage (albeit not as much) over the M7, but I ordered the M7 anyway for my ZR1 ZTK. AFAIK, this is the last of the FE, Manual transmission RWD ZR1 Corvettes. I wanted the fun of shifting in a car that will eventually be a classic to hold onto - even if it is slightly slower.
Better how? Not arguing but in what respect? I know the A8 is busy enough with shifting. I would imagine the A10 would be even more so. I find it somewhat distracting and annoying. Of course, the A8 in the ZR1 is rated for the greater torque produced by the LT5.
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Old 05-12-2019, 08:21 AM
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Originally Posted by SouthernSon View Post
Better how? Not arguing but in what respect? I know the A8 is busy enough with shifting. I would imagine the A10 would be even more so. I find it somewhat distracting and annoying. Of course, the A8 in the ZR1 is rated for the greater torque produced by the LT5.
Itís a different transmission altogether. Better design with faster shifts in auto mode. Always in the power band. Iirc the only reason it didnít make it to the C7 was fitment. Otherwise itís a big upgrade. Iíll post my track video when I get home. It was always in the powerband and had PDK level shifts.
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Old 05-12-2019, 09:25 AM
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This was my fastest lap of the day (second session at Track Night in America) on my first (and only) track day in the ZL1. Zero lag with shifts.
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Old 05-12-2019, 09:57 AM
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Originally Posted by ZR-1DUDE View Post
Good prices.

Ordering an M7?

D.
Nobody local to me has an allocation and I haven't really looked elsewhere. Have never ordered a new car, as I like to see what I'm getting before pulling the trigger. If the right car comes along, I'll do it but I'm not aggressively looking. The only sure thing is it will have to be 3ZR with an M7. BTW, good luck with yours. Look forward to seeing pics very soon.
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Old 05-12-2019, 10:44 AM
  #27  
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Shooting for a Thursday pickup.

D.
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Old 05-12-2019, 11:02 AM
  #28  
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Gorgeous car!
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Old 05-12-2019, 11:40 AM
  #29  
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Originally Posted by ZR-1DUDE View Post

Shooting for a Thursday pickup.

D.
Awesome! You gotta be stoked!
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Old 05-12-2019, 12:26 PM
  #30  
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Originally Posted by 94Lt1Vette View Post
Itís a different transmission altogether. Better design with faster shifts in auto mode. Always in the power band. Iirc the only reason it didnít make it to the C7 was fitment. Otherwise itís a big upgrade. Iíll post my track video when I get home. It was always in the powerband and had PDK level shifts.
I find that difficult to believe. It does depend upon what mode you are in. In track, and especially mode 5, I think you will find it pretty darn quick. As far as in the power band, the transmission 'learns' very quickly. A beautiful system. I wouldn't knock the A10 because I have never been in one. But I have been in mercedes and porsches that have the PDK/DCT. Have you ever been in the ZR1 at the track in track mode and sport 5 mode? If not, I think you will find it impressive. As far as on the street in tour mode, the ZR1 is not nearly as quick shifting as in that track mode.
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Old 05-12-2019, 01:14 PM
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Originally Posted by SouthernSon View Post
I find that difficult to believe. It does depend upon what mode you are in. In track, and especially mode 5, I think you will find it pretty darn quick. As far as in the power band, the transmission 'learns' very quickly. A beautiful system. I wouldn't knock the A10 because I have never been in one. But I have been in mercedes and porsches that have the PDK/DCT. Have you ever been in the ZR1 at the track in track mode and sport 5 mode? If not, I think you will find it impressive. As far as on the street in tour mode, the ZR1 is not nearly as quick shifting as in that track mode.
I have not been in a ZR1 yet but I have been in the Z06 and I have owned two 8 speed trucks. The A10 is a superior transmission from that experience. It also did not overheat with the LT4.

https://media.gm.com/media/us/en/gm/...0speed-gm.html

https://www.autoblog.com/2016/05/11/...r-porsche-pdk/
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Old 05-12-2019, 03:31 PM
  #32  
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Originally Posted by 94Lt1Vette View Post


This was my fastest lap of the day (second session at Track Night in America) on my first (and only) track day in the ZL1. Zero lag with shifts.
A PDR video would be better,it tells throttle,brake,steering angle,gear plus a lot more data Do you have a 1LE car

Last edited by foot 1; 05-12-2019 at 03:35 PM.
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Old 05-12-2019, 03:36 PM
  #33  
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Originally Posted by foot 1 View Post
A PDR video would be better,it tells throttle,brake,steering angle,gear plus a lot more data Do you have a 1LE car
Non 1LE and no PDR
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Old 05-12-2019, 10:54 PM
  #34  
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You really think the A10 shifts faster than the A8?

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Old 05-13-2019, 07:31 AM
  #35  
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Originally Posted by SouthernSon View Post
You really think the A10 shifts faster than the A8?

https://www.youtube.com/watch?v=PiqNKcMEXf4
Yes I do. So does GM. Itís also in the powerband more due to gear spacing and more available gears.
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Old 05-13-2019, 08:31 AM
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Originally Posted by 94Lt1Vette View Post
Yes I do. So does GM. Itís also in the powerband more due to gear spacing and more available gears.
You bring up a fascinating postulate there. Can you direct me to actual information on the difference in the two from GM? You know, something actually published?
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Old 05-14-2019, 06:55 AM
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Originally Posted by SouthernSon View Post
You bring up a fascinating postulate there. Can you direct me to actual information on the difference in the two from GM? You know, something actually published?
I posted the press release from GM above.
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Old 05-14-2019, 01:14 PM
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Not sure why anyone would argue the A8 is better or as good as the A10.

The A8 is known in every GM platform for issues (trucks, Corvettes, Camaros, CTS Vs)...the A10 is known NOT to have the issues.

The only reason the A8 is in the ZR1 is because the A10 will not fit, it has NOTHING to do with capability.
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Old 05-14-2019, 02:22 PM
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Originally Posted by 94Lt1Vette View Post
I posted the press release from GM above.
As far as those articles there is nothing about the comparison to the A8 except the chart showing ratio differences. You stated that the A10 shifts faster and is in the powerband more. I don't see that either. The LT5 has a fairly wide power band. Also, the articles I have seen state the A8 is faster in shifts than the PDK's. As far as the comparison to faster shifts than previous trannys it appears to be comparing previous autos available in the camaro. Both articles are from 2016. But, if you know of a direct comparison to the 2019 ZR1 A8 that would be interesting. As far as fit of the tranny, the size is the same as previous autos.

http://gmauthority.com/blog/2014/01/...a-dual-clutch/

Last edited by SouthernSon; 05-14-2019 at 02:23 PM.
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Old 05-14-2019, 02:27 PM
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Originally Posted by SouthernSon View Post
I have been heel-toeing my C5Z for almost 15 years on the track. The rev matching to me would be an absolute joke. Seriously, it really sounds like a dumbed-down feature. But, that could be just me.
Just my $0.02 tracking/racing for 20 years... the rev match is anything but a joke/gimmick. It's amazing and works perfectly. I don't bother heel-toe shifting anymore. A big benefit for me is I can now brake with my entire right foot vs. the ball of my right foot and trying to roll over my foot to blip the gas. Being 6'3" I can't do a "traditional" heel-toe where you rotate your foot way over swinging it from 6 to like 4 o'clock. It's allowed me to brake with even more confidence which means harder and later.
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