a10 in a 4th gen?
On the point of 'crispness' @RPM WS6 - It just feels better to drive. It isn't like a CVT in my mom's subaru type and it's not like a manual, but it is a better experience just driving. Like others said, once you drive it, you'll feel it. It is better than a 3sp or 4sp auto on the street. I'm not comparing to racing.
As to buying a 6th gen or not, At 6'3" I can't fit in that car anymore. Sat in a ZL1 and it had a sunroof and I hit my head. Same for the C7. The last car I could fit in very comfortably was a 5th gen 1LE with recaros and a c6 vette for context. Plus, a lot of us still left on this forum still have a 4th gen that is a TOY. it's not a daily driver and doesn't cost me much to keep it around and it's one of the few things that I can play with to relax. So i research what I would do next if I could.
Like @vorteciroc said though, GM has taken the path of integrating everything on the CANBUS, so the road to just putting it in with existing wiring, needs a lot more wiring than ever before. Mercedes BMW, others have been doing this for many years. It's going to take time to make it work. It's good it actually fits physically. now we wait for the controller that has to be coming.
As to buying a 6th gen or not, At 6'3" I can't fit in that car anymore. Sat in a ZL1 and it had a sunroof and I hit my head. Same for the C7. The last car I could fit in very comfortably was a 5th gen 1LE with recaros and a c6 vette for context. Plus, a lot of us still left on this forum still have a 4th gen that is a TOY. it's not a daily driver and doesn't cost me much to keep it around and it's one of the few things that I can play with to relax. So i research what I would do next if I could.
Like @vorteciroc said though, GM has taken the path of integrating everything on the CANBUS, so the road to just putting it in with existing wiring, needs a lot more wiring than ever before. Mercedes BMW, others have been doing this for many years. It's going to take time to make it work. It's good it actually fits physically. now we wait for the controller that has to be coming.
more research... this is a pretty good breakdown with pics...
https://www.transmissiondigest.com/f...sor-functions/https://media.gm.com/media/us/en/gm/home.detail.html/content/Pages/news/us/en/2016/may/0511-10speed-gm.html
https://media.gm.com/media/us/en/gm/home.detail.html/content/Pages/news/us/en/2016/may/0511-10speed-gm.html
Additional highlights:
http://www.speartech.com/product_p/lt410l90-pp.htm
https://www.transmissiondigest.com/f...sor-functions/https://media.gm.com/media/us/en/gm/home.detail.html/content/Pages/news/us/en/2016/may/0511-10speed-gm.html
https://media.gm.com/media/us/en/gm/home.detail.html/content/Pages/news/us/en/2016/may/0511-10speed-gm.html
Additional highlights:
- Creative packaging – The 10-speed is approximately the same size as the six- and eight-speed transmissions, minimizing changes to vehicle interfaces.
- Quicker shifts than a dual-clutch transmission – Testing has shown faster upshift times than the Porsche PDK dual-clutch transmission. In fact, the 1-2 upshift is 36-percent quicker than the PDK, while the 2-3 and 3-4 upshifts are 27-percent and 26-percent quicker, respectively.
- Reduced spin losses – Thanks to only two non-applied clutches – the same number as the eight-speed – as well as other design features, the 10-speed automatic has lower friction that contributes to greater fuel efficiency over GM’s six- and eight-speed automatics. New ultra-low viscosity transmission fluid also reduces friction, while an internal thermal bypass allows the transmission to warm up faster – attributes that enhance fuel efficiency
- GM-developed controller – It is the latest transmission to use an all-new, GM-developed control system, with performance calibrations tailored specifically for different vehicles.
http://www.speartech.com/product_p/lt410l90-pp.htm
Last edited by merim123; Jul 30, 2020 at 09:23 AM.
TECH Junkie
Joined: Jun 2008
Posts: 3,202
Likes: 1,390
From: Nitro Alley
Not really... The only problem with the A8 is it suffered from torque converter shudder which isn't specifically a transmission problem. When a clutch fails on a Manual do you blame the transmission? Gm programmed the converter to slip in and out of AFM mode so it was a seamless transition which was a fail. Between that and the type of fluid that was used, it caused the converter to shudder in a lot of 8l90 equipped vehicles. I haven't had any issues with mine but I tuned it and turned off AFM shortly after I bought the car. Other then that the A8 is a 800whp capable trans in stock form that has been deep into the 9's and 60ft in the high 1.4x range on the stock converter. With a converter swap they have been in the 1.2's...the A10 hasn't been able to replicate the same numbers...especially the 10l80 in the SS. The 10l90 A10 in the ZL1 get's close. Either way I can't think of many Automatics GM produced prior that was capable of those times factory stock down to the converter...can you?
Joined: Nov 2001
Posts: 34,627
Likes: 2,543
From: Schiller Park, ILL Member: #317
I agree the A8 isn't great with the factory tuning, but a built A4 is nothing like a tuned A8 or stock A10 transmission...literally not even in the same ball park. Actually I prefer a tuned A8 over factory A10. The overall driving experience is night and day better. Much faster and crisper shifts...you can just hold the left paddle before you enter a turn and it will drop right into the optimal gear for the speed you are going. It is a lot more engaging to drive spiritedly.
Stalled A4 cars feel like you are revving to the moon to putt along or stuck at 6500rpm when you go WOT....like a light switch, there isn't much in-between. Not really knocking them being I drove one for 10yrs and they are fun but the new Automatics are just better all around.
But getting back on point, perhaps the advantages of an A10 swap into an older application, such as a 4th gen, would be largely a subjective matter. I don't know that there is any objective benefit when you consider all the cost and hassle involved vs. the tangible gains, but if one is looking for a certain "feeling" that can only come from the A10 then perhaps it's worth it.
TECH Junkie
Joined: Jun 2008
Posts: 3,202
Likes: 1,390
From: Nitro Alley
Not really... The only problem with the A8 is it suffered from torque converter shudder which isn't specifically a transmission problem. When a clutch fails on a Manual do you blame the transmission? Gm programmed the converter to slip in and out of AFM mode so it was a seamless transition which was a fail. Between that and the type of fluid that was used, it caused the converter to shudder in a lot of 8l90 equipped vehicles. I haven't had any issues with mine but I tuned it and turned off AFM shortly after I bought the car. Other then that the A8 is a 800whp capable trans in stock form that has been deep into the 9's and 60ft in the high 1.4x range on the stock converter. With a converter swap they have been in the 1.2's...the A10 hasn't been able to replicate the same numbers...especially the 10l80 in the SS. The 10l90 A10 in the ZL1 get's close. Either way I can't think of many Automatics GM produced prior that was capable of those times factory stock down to the converter...can you?
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TECH Resident
Joined: Mar 2012
Posts: 858
Likes: 402
From: Texas
Yeah, but the 8-speed is SUPPOSED to be a huge improvement on the 4/6 speeds (you can add me to the camp that says 6 gears is enough for a street. The reason for the high-gear-count transmissions is just to keep the engine in its sweet-spot for emmisions and mileage reasons.).
I, for one, would love to hear vorteciroc **** all over them some more; it's fun hearing an expert detail how bad a particular part/ system/ car is.
I, for one, would love to hear vorteciroc **** all over them some more; it's fun hearing an expert detail how bad a particular part/ system/ car is.
