Pontiac GTO 2004-2006 The Modern Goat

Manual to auto conversion

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Old 07-17-2012, 01:43 PM
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Default Manual to auto conversion

I have an 06 gto, and I'm wanting to do an auto conversion on it. Has anyone on here done this before? What tranny would be best for 700+ RWHP? Etc. Any help would be greatly appreciated
Old 07-17-2012, 01:55 PM
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I would look into RPM transmissions heard nothing but good things about them.
Old 07-17-2012, 02:17 PM
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RPM is a good site and information. I hear people have TH400 or 350 sometimes.
Old 07-17-2012, 02:38 PM
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Ok. I need to keep it street able though
Old 07-17-2012, 02:41 PM
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Someone do a built 6L90e swap aready
Old 07-18-2012, 09:51 AM
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6l90e? I've never heard of that lol. What did it come in?
Old 07-18-2012, 10:19 AM
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Originally Posted by race4598
6l90e? I've never heard of that lol. What did it come in?
It's the 6 speed form CTSVs, Zl1s, and HD trucks.

6 gears will let you put a lower rear end ratio in it and still be as fast as a 4-speed with 3.91s or 4.10s. Only problem is how to run the computers.
Old 07-18-2012, 06:12 PM
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I went from M6 to 4L80e
Old 07-18-2012, 08:52 PM
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I went from m6 to 4l65 easy swap if you can find a auto engine harness.
Old 07-19-2012, 12:00 PM
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Depends on your budget, a stock 4L80 with a mild refresh will take you a long ways but a build 4L60 will take you there as well
Old 07-19-2012, 02:10 PM
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Originally Posted by 409CISecondGen
Only problem is how to run the computers.
Why would that be more difficult than the 4l60/80e swap?
Old 07-19-2012, 02:17 PM
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Originally Posted by race4598
Why would that be more difficult than the 4l60/80e swap?
The LS2 Computer will not work with the 6l90e
Old 07-19-2012, 02:24 PM
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My goal is to run in the 10s. I'm goin with cam, heads, intake, exhaust, and nitrous as well as some suspention and drivetrain upgrades. What tranny would be best for that and still be streetable?
Old 07-20-2012, 04:39 PM
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Interested in selling your M6 parts? I have an A4 I'd like to convert to manual.
Old 07-20-2012, 11:12 PM
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Originally Posted by MaxNard
Interested in selling your M6 parts? I have an A4 I'd like to convert to manual.
Maybe. It's going to be around the middle of September before I'll be able to do it. If you're willing to wait that long then yeah man, definitely
Old 07-21-2012, 12:35 AM
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What's the prices of everything 4l80e related for the goat? I know for the proper one for a C5 it's a lot.
Old 07-21-2012, 10:32 AM
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Originally Posted by race4598
Maybe. It's going to be around the middle of September before I'll be able to do it. If you're willing to wait that long then yeah man, definitely
Not sure if you're willing to do this or not, but as a suggestion: there's a shop local to me that will swap all the parts on both cars at a cost of $1300 per car. That includes reprogramming and the car will be as close to OEM as it gets. You can get into a 4L65E stock GTO trans with 70k miles that's been babied since new and has all the regular services done (never been tracked or hard launched).

You'll have an excellent starter trans to have built, and If you decide the 4L65E isn't going to cut it, at least you'll be at a much better starting point from there.

I'm definitely willing to wait, since I've been looking for someone willing to swap for the last six months.
Old 07-22-2012, 08:18 AM
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How much stronger are the 65's compared to the 60's?
Old 07-24-2012, 08:46 AM
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OP, I would really be interested in doing a straight swap with you. I have an 06 A4 currently with a little less than 41,000 miles. Car is completely stock except for an axleback exhaust and has never been ran hard or been to the track.

I probably have access to a full shop with lifts and we could do the swap for no cost, except for each of us getting our PCMs reprogrammed (I may even be able to get that done for free).

We could just pull both cars in, put them on the lifts, and start transferring parts.

Again, this should cost neither of us much, except for a few things like PCM reprogram (maybe free too), and fluids, etc.

Let me know. I'm very interested in doing this.
Old 07-24-2012, 10:37 AM
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OP, I would really be interested in doing a straight swap with you. I have an 06 A4 currently with a little less than 41,000 miles. Car is completely stock except for an axleback exhaust and has never been ran hard or been to the track.

I probably have access to a full shop with lifts and we could do the swap for no cost, except for each of us getting our PCMs reprogrammed (I may even be able to get that done for free).

We could just pull both cars in, put them on the lifts, and start transferring parts.

Again, this should cost neither of us much, except for a few things like PCM reprogram (maybe free too), and fluids, etc.

Let me know. I'm very interested in doing this.
I'm thinking you need to tell me where this shop is, and find me another M6 donor if you're going to horn in on mine bro...


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