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Old 09-17-2014, 03:46 PM   #1
nsb29
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6l80e drive shaft ?

I have a 6l80e from 09 G8 I wont to run a one piece driveshaft I have heard I could use a 400 bolt on yoke and have it machined to replace the 3 bolt flange looking for some input or a better idea thanks doug

Last edited by nsb29; 09-28-2014 at 09:03 AM.
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Old 09-22-2014, 05:16 PM   #2
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Re: 6l80e drive shaft ?

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Originally Posted by nsb29 View Post
I have a 6l80e from 09 GTO I wont to run a one piece driveshaft I have heard I could use a 400 bolt on yoke and have it machined to replace the 3 bolt flange looking for some input or a better idea thanks doug
hasn't anyone run into this three bolt flange ??
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Old 09-22-2014, 07:51 PM   #3
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Re: 6l80e drive shaft ?

Yea, but we've steered away from it (and probably done the same for others). Yes it can be done, and has been done, but I think the general cost and time involved makes most folks look for another source vehicle that came with the "normal" connector.

You may have better luck finding a more in-depth explanation over on LS1tech. I have seen this however: http://www.shop.gforce1320.com/product.sc?productId=354

Its designed to bolt a regular driveshaft into a GTO with a tranny swap.
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Old 09-23-2014, 12:44 AM   #4
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Re: 6l80e drive shaft ?

You can check out this guys build, not the cheapest route but it did bolt right up that 3 bolt flange. http://67-72chevytrucks.com/vboard/s...358692&page=46
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Old 09-23-2014, 09:40 AM   #5
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Re: 6l80e drive shaft ?

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You can check out this guys build, not the cheapest route but it did bolt right up that 3 bolt flange. http://67-72chevytrucks.com/vboard/s...358692&page=46
thanks I knew someone had a better idea. adapter like this was my first idea br3w city gave me a link to a driveshaft manufacturer thank you both doug
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Old 09-23-2014, 11:08 AM   #6
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Re: 6l80e drive shaft ?

Just another link, these are the guys that built the one for Hart_Rod in his build http://www.driveshaftshop.com/
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Old 09-23-2014, 12:47 PM   #7
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Re: 6l80e drive shaft ?

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Just another link, these are the guys that built the one for Hart_Rod in his build http://www.driveshaftshop.com/
thanks doug
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Old 09-25-2014, 10:23 PM   #8
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Re: 6l80e drive shaft ?

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I have a 6l80e from 09 GTO I wont to run a one piece driveshaft I have heard I could use a 400 bolt on yoke and have it machined to replace the 3 bolt flange looking for some input or a better idea thanks doug
Running a Machined TH400 bolt-on yolk & a drive shaft with a incorporated HD slip yoke is the ticket, The Machining is simple, And you have the G8/Camaro Yolk to take to the machinist.

Yolk, http://www.ebay.com/itm/Transmission...-/130322434555, This is Cheap! Is has a Spicer part# but not sure if it is Spicer or not.

DriveShaft, http://www.dennysdriveshaft.com/p136...lip.html#photo.

I also recommend a 1350 Yolk for the rearend as well to make the U-joints the same.
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Old 09-26-2014, 08:49 AM   #9
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Re: 6l80e drive shaft ?

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Running a Machined TH400 bolt-on yolk & a drive shaft with a incorporated HD slip yoke is the ticket, The Machining is simple, And you have the G8/Camaro Yolk to take to the machinist.

Yolk, http://www.ebay.com/itm/Transmission...-/130322434555, This is Cheap! Is has a Spicer part# but not sure if it is Spicer or not.

DriveShaft, http://www.dennysdriveshaft.com/p136...lip.html#photo.

I also recommend a 1350 Yolk for the rearend as well to make the U-joints the same.
I have the yoke, but the local machine shops I have gone to say they cant chuck it up or don't want to ??
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Old 09-26-2014, 01:06 PM   #10
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Re: 6l80e drive shaft ?

You could always use that driveshaft with slip yoke clinebarger posted and this flange http://www.driveshaftshop.com/drives...nger-05-06-gto.

This would be easier than converting your transmission from your 3 bolt flange to a slip yoke style to use a TH400 yoke or the 6l90e 1410 yoke.
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Old 09-26-2014, 08:00 PM   #11
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Re: 6l80e drive shaft ?

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I have the yoke, but the local machine shops I have gone to say they cant chuck it up or don't want to ??
They just don't want to!! You can Bolt the Yolk to a Lathe Flange, Then Dial indicate to get out the run-out.....Then go to town!!

I'm an amateur with a Bridgeport Lathe, But even I know how to do this.

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You could always use that driveshaft with slip yoke clinebarger posted and this flange http://www.driveshaftshop.com/drives...nger-05-06-gto.

This would be easier than converting your transmission from your 3 bolt flange to a slip yoke style to use a TH400 yoke or the 6l90e 1410 yoke.
Great find, Yes that would be easier! I would put a Dial Indicator on it to make sure there is No Run-Out. Not putting down their work at all, But anytime you use a aftermarket "Adaptor, Add-a-Piece" it needs to be checked.

The next conversion I do with a car 6L80E, I will try this adaptor....Thanks DLW.
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Old 09-26-2014, 09:55 PM   #12
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Re: 6l80e drive shaft ?

grate info I like the idea of turning down the 400 yoke because its less parts, but the adapter looks easy
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Old 09-26-2014, 11:11 PM   #13
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Re: 6l80e drive shaft ?

My driveshaft uses an adapter on the tranny that connects to the driveshaft via a Porsche CV joint.
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Old 09-27-2014, 06:04 PM   #14
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Re: 6l80e drive shaft ?

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My driveshaft uses an adapter on the tranny that connects to the driveshaft via a Porsche CV joint.
nice exhaust! the adapter looks like its well tested
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Old 09-27-2014, 07:56 PM   #15
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Re: 6l80e drive shaft ?

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nice exhaust! the adapter looks like its well tested
Thanks. The driveshaft is supposed to be rated for 1000+ HP.

http://www.driveshaftshop.com/domest...ece-driveshaft
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Old 09-28-2014, 01:41 AM   #16
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Re: 6l80e drive shaft ?

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Thanks. The driveshaft is supposed to be rated for 1000+ HP.

http://www.driveshaftshop.com/domest...ece-driveshaft
So they pretty much made it custom to the length you needed and added a standard type 1350 on the Diff. end?
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Old 09-28-2014, 01:56 AM   #17
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Re: 6l80e drive shaft ?

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Originally Posted by clinebarger View Post
The next conversion I do with a car 6L80E, I will try this adaptor....Thanks DLW.
Let me know how it goes if you do it before me and vise versa if I do it first. I'm either doing this adapter with the Denny's DS you posted, or the DS Hart_Rod had made, not sure yet, at least there is a few options.

Now if they made more than one stand alone 6L80E TCM controller ..I was bummed when I called Mast Motorsports that had this working with their PCM to find out they quit on it and don't offer it.
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Old 09-28-2014, 05:55 AM   #18
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Re: 6l80e drive shaft ?

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So they pretty much made it custom to the length you needed and added a standard type 1350 on the Diff. end?
That's correct.
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Old 09-28-2014, 06:33 AM   #19
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Re: 6l80e drive shaft ?

Wholly smokes you fellas have some nice rides! Excuse me - I have to go fertilize my money tree! LOL
That billet unit looks awesome. I am inspired. The search for a doner is on.
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Old 09-28-2014, 08:55 AM   #20
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Re: 6l80e drive shaft ?

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Wholly smokes you fellas have some nice rides! Excuse me - I have to go fertilize my money tree! LOL
That billet unit looks awesome. I am inspired. The search for a doner is on.
10-4 on the money tree $$$$$ this motor only makes 360 hp but it will be a daily driver and long trips with the airstream it has to be dependable
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Old 10-03-2014, 05:49 PM   #21
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Re: 6l80e drive shaft ?

thanks every one for all the input doug
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Old 10-16-2014, 09:15 AM   #22
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Re: 6l80e drive shaft ?

Name:  i phon 043.jpg
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Size:  36.7 KBI got my 400 yoke back from the machine shop yesterday her are some pictures I found out you cant go to your normal machine shop you have to go to your local jesse james al the big shops wont to hit a home run on every job I hope this helps someone it cost me 45.00 for the yoke 60.00 for the machine work im not cheap I just didn't like using the extra part when using the adapter doug
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Old 10-16-2014, 11:29 PM   #23
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Re: 6l80e drive shaft ?

I'm glad you found a competent machinist.

Reinstall the 3-bolt yolk with the Center Nut.

Cut off the Output Shaft flush with the Nut. A portable Band Saw does the Cleanest/Coolest Cut.

Install TH400 yolk & Nut. Test a U-Joint for a range of motion.
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Old 10-17-2014, 09:17 AM   #24
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Re: 6l80e drive shaft ?

ive been tinkering with old cars and motorcycles since I was 9 that's almost 58 years of experience I shouldve known better than to go to a production shop but at the same time I knew I did not wont the adapter although im sure it works just fine a DA works grate but but perfect paint takes a stick the is in the details
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Old 10-29-2014, 08:25 PM   #25
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Re: 6l80e drive shaft ?

I just had a yoke from a 6l80e truck machined for my ls swap out of a 2011 camaro
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