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Old 09-08-2014, 05:20 PM   #1
blk13
 
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A6 power levels

What are some of you guys that are making big power putting through a STOCK 6L90? Wonder what the limit is before issues
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Old 09-08-2014, 05:39 PM   #2
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I'm in the low 700s. I think it is near the limit. If I see a cheap one for sale I am going to snap it up.
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Old 09-08-2014, 06:09 PM   #3
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700 rwhp? Any issue's yet? Be looking at future options on different trans or do a built 6L90

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I'm in the low 700s. I think it is near the limit. If I see a cheap one for sale I am going to snap it up.
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Old 09-09-2014, 06:46 AM   #4
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I'm in the 650+ whp range and have had no issues so far. 37,000 miles and 300+ passes at the track so far.
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Old 09-09-2014, 08:35 AM   #5
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621whp and all is well...
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Old 09-09-2014, 09:06 AM   #6
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700 rwhp? Any issue's yet? Be looking at future options on different trans or do a built 6L90
No issues YET.
I don't know of anyone with a "built" 6L90 that can prove it will stand up better than the stocker yet.
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Old 09-09-2014, 09:24 AM   #7
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No issues YET.
I don't know of anyone with a "built" 6L90 that can prove it will stand up better than the stocker yet.
Little conservative with your HP figures???
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Old 09-09-2014, 12:36 PM   #8
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I can see at least 700 coming off the stock to the wheels
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Old 09-10-2014, 09:42 PM   #9
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Little conservative with your HP figures???
Lol..
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I'm in the low 700s.
Trackman drives around town at a little over 700 but will occasionally spray a little nitrous in the motor and make a 9 second pass with an estimated 900+ whp.

mylftft has been doing quite a bit of drag racing and land speed racing with just over 1000whp out of twin turbos. I don't think he has had a single issue yet but I don't think he is the kind of guy that would come out and tell you if he had a problem. Kind of keep it in the family kind of guy. But if there is no problem and he sees this post he will definitely let us know...
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Old 09-11-2014, 08:16 AM   #10
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Wow, nice to know that from reading this it looks like GM really made sure the 6L90 was a solid unit. The 6L80 in my old C6 sure wasn't.......
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Old 09-11-2014, 08:23 AM   #11
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"Trackman drives around town at a little over 700 but will occasionally spray a little nitrous in the motor and make a 9 second pass with an estimated 900+ whp. "

That's a tad high on both estimates.The car might have that much in it but I have never programmed the nitrous near that high. ......yet
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Old 09-13-2014, 09:52 PM   #12
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Nobody builds a 6L90 that can take more power than the stock unit, I've spent alot of time on the phone & email talking to all the big tranny companies & they will all tell you that 800 is the limit. PATC makes the Phoenix kit for the 6L80/6L90 & they make big claims but I personally know people that have cooked it faster than the stock tranny. I've held off sharing my experience so far, I'm all for helping people through my experiences like Jess has, we just happen to be the guys pushing things to extremes & in alot of ways we can save other people alot of money by the new ground were treading, I'm getting ready to write up a big thread about it & some other things with the ZL1.
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Old 09-13-2014, 09:56 PM   #13
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Lol..

But if there is no problem and he sees this post he will definitely let us know...
I like how you did that buddy! Been waiting on a few things.
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Old 09-14-2014, 09:31 AM   #14
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Nobody builds a 6L90 that can take more power than the stock unit, I've spent alot of time on the phone & email talking to all the big tranny companies & they will all tell you that 800 is the limit. PATC makes the Phoenix kit for the 6L80/6L90 & they make big claims but I personally know people that have cooked it faster than the stock tranny. I've held off sharing my experience so far, I'm all for helping people through my experiences like Jess has, we just happen to be the guys pushing things to extremes & in alot of ways we can save other people alot of money by the new ground were treading, I'm getting ready to write up a big thread about it & some other things with the ZL1.
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I like how you did that buddy! Been waiting on a few things.
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Old 09-14-2014, 01:20 PM   #15
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What trans are you running?




[QUOTE=mylftft;7950758]Nobody builds a 6L90 that can take more power than the stock unit, I've spent alot of time on the phone & email talking to all the big tranny companies & they will all tell you that 800 is the limit. PATC makes the Phoenix kit for the 6L80/6L90 & they make big claims but I personally know people that have cooked it faster than the stock tranny. I've held off sharing my experience so far, I'm all for helping people through my experiences like Jess has, we just happen to be the guys pushing things to extremes & in alot of ways we can save other people alot of money by the new ground were treading, I'm getting ready to write up a big thread about it & some other things with the ZL1.[/QUOTE]
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Old 09-14-2014, 07:18 PM   #16
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Wow, nice to know that from reading this it looks like GM really made sure the 6L90 was a solid unit. The 6L80 in my old C6 sure wasn't.......
The 6L90 is a lot stronger than the 6L80.

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I like how you did that buddy! Been waiting on a few things.
I knew from the past conversations that you have been making a lot of calls on that trans and really didn't know if it was flawless and you were being proactive or if you were getting signs of eminent destruction. Everyone says turbo400 or maybe a highly beefed 4l80. Those transmissions have been around long enough that they are making them hold the crazy power levels....maybe get one of those, add a gear vendors overdrive unit and a new driveshaft and the car will run even better? The 6l90 is such a rare transmission and it is so stout that very few people make enough power to challenge it. The aftermarket seems to be kind of oblivious to it.

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What trans are you running?
mylftft is on a 6l90.
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