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Can you supercharge or turbo charge an automatic ?

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Old 02-05-2016, 11:54 AM
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PatriotsGuy
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Default Can you supercharge or turbo charge an automatic ?

Was curious can you charge or boost an automatic.I know there are Mercedes that are but I was seriously wondering if my car fails to catch and upshift even at the slightest spin of the tire in paddle mode , how would it handle the increase in power and secondly if you left it in automatic without being able to control the gears, wouldn't it just red line the **** out of the motor, upon spooling or charging in either mode ? Someone please break this down for me.( I drive an 08 C6 auto 6 speed with paddles)

Last edited by PatriotsGuy; 02-05-2016 at 11:56 AM.
Old 02-05-2016, 12:25 PM
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JKHolman
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Default 6 cylinder

I supercharged my '08 Mustang the Fall of 2014. Factory automatic transmission and she did just fine. The limited slip differential and the 3.73 rear gears were done by a garage months before. The supercharger I did myself.
Forgot to mention - special tune to maximize the AT. Had a lot of fun.

- JKHolman
Old 02-05-2016, 12:40 PM
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schpenxel
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Originally Posted by PatriotsGuy
Was curious can you charge or boost an automatic.I know there are Mercedes that are but I was seriously wondering if my car fails to catch and upshift even at the slightest spin of the tire in paddle mode , how would it handle the increase in power and secondly if you left it in automatic without being able to control the gears, wouldn't it just red line the **** out of the motor, upon spooling or charging in either mode ? Someone please break this down for me.( I drive an 08 C6 auto 6 speed with paddles)
Plenty of forced induction setups are around here with automatics. They work just fine.

Yes the transmission tune needs some work and an A6 isn't going to survive 1000rwhp at a drag strip.. but they hold up well enough if tuned right

The issues with when they shift, etc. is all in tuning and can be adjusted. Even without the SC the factory transmission tune can be much improved.

Last edited by schpenxel; 02-05-2016 at 12:41 PM.
Old 02-05-2016, 01:31 PM
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Originally Posted by schpenxel
Plenty of forced induction setups are around here with automatics. They work just fine.

Yes the transmission tune needs some work and an A6 isn't going to survive 1000rwhp at a drag strip.. but they hold up well enough if tuned right

The issues with when they shift, etc. is all in tuning and can be adjusted. Even without the SC the factory transmission tune can be much improved.
What is the cost to tune transmission. Where ?
Old 02-05-2016, 01:32 PM
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PatriotsGuy
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Originally Posted by schpenxel
Plenty of forced induction setups are around here with automatics. They work just fine.

Yes the transmission tune needs some work and an A6 isn't going to survive 1000rwhp at a drag strip.. but they hold up well enough if tuned right

The issues with when they shift, etc. is all in tuning and can be adjusted. Even without the SC the factory transmission tune can be much improved.
Upon hard acceleration, what' was the average gear change/red line in your mustang, Cause my Vette experiences lag and delayed shifting, had it looked a 5 times.They don't know ****.

Last edited by PatriotsGuy; 02-05-2016 at 01:34 PM.
Old 02-05-2016, 02:04 PM
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schpenxel
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All that sounds like tuning issues to me. The factory did a crappy job setting up the shifting for WOT

Ask the question in the forced induction forum or scan/tune forum and you'll get better answers. I do some tuning but unless you're local I won't be of much help. There are an insane # of tables that make A6 transmission work

I know Pat Guerra ("pat G") has helped people tuning them in the past. Whether he can help remotely or not, I have no idea. Google his name and you'll find his website. Email him and see if he can help.

Some examples of transmission settings:








Last edited by schpenxel; 02-05-2016 at 02:04 PM.
Old 02-05-2016, 02:31 PM
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Originally Posted by PatriotsGuy
Was curious can you charge or boost an automatic.I know there are Mercedes that are but I was seriously wondering if my car fails to catch and upshift even at the slightest spin of the tire in paddle mode , how would it handle the increase in power and secondly if you left it in automatic without being able to control the gears, wouldn't it just red line the **** out of the motor, upon spooling or charging in either mode ? Someone please break this down for me.( I drive an 08 C6 auto 6 speed with paddles)
All '08 Vettes with an automatic are C6's, 6 speeds, and have paddles, so there is no need to define that part in future posts.

As far as blowers vs turbos, it's a matter of how much power you want, how much you are willing to spend, and how often you are willing to replace transmissions.

A properly tuned A6 can handle about 600 hp when street driven, which is more than an otherwise stock LS3 with a blower will produce.
Old 02-05-2016, 08:44 PM
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Mick14
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Originally Posted by HOXXOH
All '08 Vettes with an automatic are C6's, 6 speeds, and have paddles, so there is no need to define that part in future posts.

As far as blowers vs turbos, it's a matter of how much power you want, how much you are willing to spend, and how often you are willing to replace transmissions.

A properly tuned A6 can handle about 600 hp when street driven, which is more than an otherwise stock LS3 with a blower will produce.
Pretty sure they can handle a bit more than that and a stock LS3 can produce more than 600 hp easily with forced induction.
Old 02-05-2016, 09:10 PM
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True on both counts
Old 02-06-2016, 12:59 PM
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Default Pi$$ poor imo

Gtr, ferrari, lambo don't seem to have this problem, don't think price should have anything to do with it either, improve your damn driving dynamics GM
Old 02-06-2016, 01:47 PM
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You're comparing German/Italian supercars to something from GM and expecting to see no difference?
Old 02-06-2016, 02:40 PM
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Originally Posted by PatriotsGuy
Gtr, ferrari, lambo don't seem to have this problem, don't think price should have anything to do with it either, improve your damn driving dynamics GM
Old 02-06-2016, 02:48 PM
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In the process of building a 1000 horse power capable A6 I believe the parts are available for 1200 as well.
Old 02-06-2016, 02:53 PM
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Originally Posted by xBoostx
In the process of building a 1000 horse power capable A6 I believe the parts are available for 1200 as well.
Big money?
Old 02-07-2016, 02:13 AM
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Originally Posted by Mick14
Pretty sure they can handle a bit more than that and a stock LS3 can produce more than 600 hp easily with forced induction.
You might want to ask subfloor about how many A6 trannys he used up with slightly less than 600 hp. Street driving they'll last much better, since you won't be WOT to 130+ on a regular basis and lack of traction will keep the WOT runs in check.
Checking the performance list brought up 10 N/A LS3's that are running quicker than the quickest blown LS3 with only a blower. I rather doubt any of those N/A cars were pushing 600 hp that you assumed the blower car easily produced.
Old 02-07-2016, 04:12 PM
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Default Japanese and Italian

Originally Posted by schpenxel
You're comparing German/Italian supercars to something from GM and expecting to see no difference?
The and corvette and nissan are similar in price points, there is no excuse for gmc horrid transmissions

Last edited by PatriotsGuy; 02-07-2016 at 04:13 PM.
Old 02-07-2016, 05:09 PM
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Base price for Corvettes are in the 50K range, base price for a GTR is around 100K

Regardless, they really aren't horrid. That's not to say they couldn't have done a better job with some of the programming, but the aftermarket has gotten pretty good at fixing that.

I wonder how the new A8's are on the C7's

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Old 02-08-2016, 12:08 AM
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Originally Posted by PatriotsGuy
The and corvette and nissan are similar in price points, there is no excuse for gmc horrid transmissions
Just for grins, go to your local Nissan dealer and ask how much the GTR transmission service costs at the regular maintenance interval. Also ask them how many times in a row that you can do the launch control.
Take clean underwear in case you shlt yourself.

Compare that to being able to do your own for about $50.
Old 02-09-2016, 05:31 PM
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Default I neant z06 and zr1 are simikar in price

Originally Posted by schpenxel
Base price for Corvettes are in the 50K range, base price for a GTR is around 100K

Regardless, they really aren't horrid. That's not to say they couldn't have done a better job with some of the programming, but the aftermarket has gotten pretty good at fixing that.

I wonder how the new A8's are on the C7's
Holy smokes they want a 100k for the Gtr. Still worth it
Old 02-10-2016, 11:02 AM
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Originally Posted by PatriotsGuy
Holy smokes they want a 100k for the Gtr. Still worth it
Yeah, but think about how much more the girls would like a sleek rare sports car than a plain Jane everyday Vette with a crappy transmission and a supercharger they can't even see.


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