Pontiac GTO 2004-2006 The Modern Goat

Atermarket driveshaft ?

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Old 09-04-2007, 10:34 AM
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Default Atermarket driveshaft ?

Are there any negatives to this needed mod?

Mark Williams will make them for about 300.00 less than the ones I have found on line and I can't think of a more trusted name in the business.

What is the length of the driveshaft for an 05 6 speed (GTO of course) ?? I figure someone who has done this can measure the stock one for me.

Thanks
Old 09-04-2007, 05:50 PM
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Unless you broke it I wouldn't worry about replacing it, but that's just me.
Old 09-04-2007, 07:15 PM
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I will be runing slicks and I will feel better with a 1 piece driveshaft.With a blower,meth and a 50 shot it will break.
Old 09-05-2007, 01:50 PM
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I've only read about one person actually breaking the stock unit. There is some slop due to the 2 piece design and rubber mount but they're pretty tough. The thing with a one piece design is the pinion angle will be off possibly increasing noise and vibration, that is why they are two piece from the factory.
Old 09-05-2007, 02:03 PM
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Radkon

I am aware of some shimming needed and this will not be a dailey driver so some drivetrain noise is ok, but vibration would suck.
Thanks for your input.
Old 09-05-2007, 06:36 PM
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Worthless Mod The Stock D/s Is Been Good On Cars Making 800 Rwhp
Old 09-05-2007, 07:12 PM
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I broke mine with the HP listed in the sig. I did it on drag radials.
Old 09-05-2007, 07:49 PM
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I drive to t he track and it would suck to break down.
Old 09-05-2007, 08:30 PM
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As said you will get more noise with the 1 piece and there is a very good chance you will get vibration as well.

As far as breaking I have only read about one or two breaking their stock unit, but also have seen a few aftermarket 1 pieces break. The stock DS's have been proven to go 10's, I believe one person has even went 9's with the stock DS.

About the only thing you will get from the 1 piece is maybe less slop. Though at the same time I would think that would put more stress on the rear end and I would then be worried about breaking that. Mine is doing fine with 420RWHP on motor and a 175 wet shot, I run 275 BFG DR's daily as well. I would spend that money on something else. IMO
Old 09-06-2007, 12:52 AM
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Here is the sequence of events....

Burnout...


Launch...pretty nice squat huh?


Results...




In defense of the driveshaft. The car did hop a little right before it snapped. The hop was probably just enough to give the shaft a little lateral bend making it easier to break.
Old 09-06-2007, 03:47 AM
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mine's holding out pretty well with over 620 rwtq on the bottle
M/T 275 DR's regularly cutting 1.6x 60's and a best of 1.55
Old 09-06-2007, 09:04 AM
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I have drag bags and have wheel hop under controll so I will give the stock one a try.

Thanks to all.
Old 09-07-2007, 12:44 PM
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Wheel hop is the rear killer of the stock drive shaft. IT loads and unloads the shaft quickly and drastically.
Old 09-08-2007, 01:11 AM
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Originally Posted by radkon
Wheel hop is the rear killer of the stock drive shaft. IT loads and unloads the shaft quickly and drastically.
I got the F/R Hotchkis Anti-Sway bars installed,
it pretty much got rid of my wheel hop,
then I installed the Harrop cover, havn't seen wheel hop all year
Old 09-10-2007, 12:27 AM
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i have a maggie 122 and a 50 shot making 650rwhp and im in the 10's with all the stock stuff driveline,stubs,halfshaft,tranny 6 speed at that.....id say its fine
Old 09-10-2007, 02:43 PM
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Originally Posted by KrautBurner
I got the F/R Hotchkis Anti-Sway bars installed,
it pretty much got rid of my wheel hop,
then I installed the Harrop cover, havn't seen wheel hop all year
I've got the Hotchkiss bars, Energy suspension bushings and king springs front and rear. Hop is almost non existent unless I'm at a really sticky track and pushing it VERY hard.
Old 09-11-2007, 03:42 AM
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Forgive a newb question but how is a sway bar alleviating wheel-hop? I thought it only helped on lateral transitions going thru curves? Not being a smart-***, just trying to figure this out.
Old 09-11-2007, 09:28 PM
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I know they are not cheap but I went with a PST 3.5" carbon fiber driveshaft. Absolutly no vibration or noise and I picked up a tenth from reducing my rotating mass.
Old 09-14-2007, 07:53 AM
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I have a one piece alloy shaft on my car. I bought it from
"The drive line shop" down in the Carolinas.

Pros to this set up:

One piece
Rated to 800 rwhp
Rated to 8000 rpm
Drop in installation
Very quiet
VERY smooth
Quicker acceleration (NO CHIT!)


Cons.

almost 900 bucks
Tight squeeze (3.0" diameter)
Borla cat back required some "tweaking" to clear
Grease zerks are a pain to get to.

Beyond these minor issues, this thing is great and it's nice peace of mind.

You have to replace a bolt that holds one of the rear lap belts in place, but that is it in terms of "making" it fit.

The billet rear adapter is the jewel in this thing. No fussing with the rear diff at all. True 100% driveway swap.

Billet u Joints came with mine. Another plus in my book.

Good luck!



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