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10-20-2008, 06:05 AM
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#1 | | TECH Enthusiast
Join Date: Jan 2008 Location: Houston Tx
Posts: 516
|  Looking into buying a M6 GTO (2006) what usually breaks first?
I am looking into buying a m6 2006 gto with the ls2. If I mod the car with say heads and cam what will break first? Are the rear ends week on the GTO like the fbodys? also what problems do I need to watch for when buying one? The one I am looking at has a little under 30k miles. | 
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10-20-2008, 08:50 AM
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#2 | | 12 Second Club
Join Date: Sep 2008 Location: Manchvegas, NH
Posts: 171
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I have a head cam GTO, first thing you want to do is replace the clutch and shifter and get a braided line for the clutch. I did not mod it last year and noticed it very hard to not heat the clutch up too fast. They dont handle modd's very nicely. I have done probably 40 passes on the car since the head/cam work and the drivetrain does handle it. I am not doing 5k launches with Mickeys yet but I am going to do a full built rear end from driveshaft back this winter. The sub axels and the driveshaft are probably the weekest link. If your not going to drag it hard core the rear end set-up is a overkill. You could just do stub axles and be fine for heavy street abuse. There are guys running serious power with stock everything too though.
__________________ 06 GTO 457wrhp 421torque AFR 205's hellraiser comp cam, 1 7/8th kooks long tubes, catless mids, spintech catback, underdrive pully, MT's, Textrallia OZ700 clutch and GMM Rip Shifter, BMR Drag bags, BMR safty loop, Braided clutch line, Ling fuel pump, oil catch can, Lucus 42lb injectors...
On order: Fast 92 full port & TB
To come by spring, full race 8.8 with axles, stubs, shafts, and driveshaft. 
Best e.t 12.35 @ 114.4mph with a 1.87 60, | |
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10-20-2008, 01:27 PM
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#3 | | It's not mine! woo hoo!
Join Date: Jun 2003 Location: McLean, VA
Posts: 4,817
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Shocks/struts/springs/mounts all start sagging around 20k miles causing uneven tire wear.
I think everything else is pretty solid like the other GM LSx cars. The reply above is about right for the rear. | |
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10-20-2008, 04:31 PM
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#4 | | On The Tree
Join Date: Jan 2008 Location: sc
Posts: 123
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everything
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couple of mods | |
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10-20-2008, 10:13 PM
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#5 | | Teching In
Join Date: Apr 2007 Location: Chino Hills, CA
Posts: 37
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the bank/wallet | |
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10-21-2008, 11:48 AM
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#6 | | TECH Enthusiast
Join Date: Jul 2007 Location: Ashdown, AR
Posts: 677
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I had to upgrade my Driveshaft and Beef up my T-56 because of my TT
__________________  2004 Pontiac GTO Coming Soon: Forged 408 and 19psi | |
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10-21-2008, 12:37 PM
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#7 | | Teching In
Join Date: Sep 2006
Posts: 27
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Quote:
Originally Posted by ArklaTexan  I had to upgrade my Driveshaft and Beef up my T-56 because of my TT | A lot happens when you're putting down 678rwhp! lol
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10-21-2008, 04:32 PM
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#8 | | Registered User
Join Date: Oct 2008 Location: on the edge
Posts: 34
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Like everone else has said the stubs and axles, if you making good power with good traction. Clutch is somewhat week and the shifter gets sloppy when your on it hard.
Do some suspension mods to help you get the power to the ground.
__________________ '06 GTO M6. 12.97 @110 2.02 60' on KDW2s
'02 Silverado 2500HD 6.0  | |
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10-23-2008, 12:13 PM
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#9 | | TECH Regular
Join Date: Apr 2008 Location: Delaware?/South Carolina:)
Posts: 422
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Do full boltons and suspension mods first. Then Get a good clutch. Now you can do H/C/N20!!
__________________ M6 06 GTO with the RaceProvenMotorsports mod  | |
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10-23-2008, 12:43 PM
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#10 | | 11 Second Club
Join Date: Aug 2005 Location: driving my 88 integra :(
Posts: 1,210
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funny,
my car must be super tough,
it's not been breaking much.....
my stock clutch lasted over 35000 miles,
over 300 passes down the 1320
a dozen or so auto-x events
(10k miles and 100 passes were with mickey thompson ETstreets and 100 shot of nitrous, cutting 1.6x 60' times with 500rwhp and 600rwtq)
only thing i replaced was the cv shafts and axle stubs (didn't break them, but one stub had twisted splines from my 1.55 60' launching)
of course with my LS7 clutch, I can't get my launch down
done at 36000 miles, because I wanted to (it wasn't dead yet)
had to do brakes at 45K miles tho
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lincoln is on the $5 bill, washington is on the $1 bill now that obama is our next president we finally have somebody to put on food stamps.
"Racing is life. Anything before or after is just waiting." -Steve McQueen
2005 Pontiac GTO (LS2 M6) Phantom Black Metalic (new dyno numbers coming soon)
Cam: 226/226 591/591 112lsa, Kooks Long Tubes with Cats, Borla Cat Back, Nitrous Outlet LS2 Plate system | |
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10-25-2008, 12:11 PM
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#11 | | 12 Second Club
Join Date: Mar 2008 Location: Waco, Tx
Posts: 166
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Well, I would have to say clutch. For the simple reason that mine is now slipping on me at the track. Also, the suspenion on these cars tends to wear out rather quickly. | |
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10-25-2008, 12:31 PM
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#12 | | Teching In
Join Date: Oct 2005 Location: Queens
Posts: 6
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I went through 3 rears and 3 times I broke the 3rd gear Syncro....I even broke the actually shifter handle LOL....My mods...K&N drop in filter  ...Granted I was powershifting 2 out of the 3 times 3rd went...The rear would start to wine on me every 6-7K miles...I only made 2 passes on my MT's DR's and sold them so the car didn't see sub 2.0 60' often at all.....Othet than that...the motor did wonders to be honest....a joy to drive in sub 70F air....
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GONE BUT NOT FORGOTTEN!!
2005 Quicksilver M6 w/stock 18's with 245/40/18's-ATCO
Bone stock on street tires-12.974 @108.80,2.027 60'
best 60'-2.022
K&N drop in filter/MT DR's(stock 17" wheels)
Best ET-12.961
Best 60'-1.957
Best MPH-109.58 | |
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11-10-2008, 10:52 AM
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#13 | | Teching In
Join Date: Apr 2008
Posts: 4
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Quote:
Originally Posted by bigfatls6 I am looking into buying a m6 2006 gto with the ls2. If I mod the car with say heads and cam what will break first? Are the rear ends week on the GTO like the fbodys? also what problems do I need to watch for when buying one? The one I am looking at has a little under 30k miles. | Your "will" to hold back on Mod's looking for more rwhp!!! | |
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11-10-2008, 11:43 AM
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#14 | | Registered User
Join Date: Aug 2008 Location: Virginia
Posts: 44
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Quote:
Originally Posted by demonspeed Shocks/struts/springs/mounts all start sagging around 20k miles causing uneven tire wear. | How much does it cost to replace all that? Nothing performance special, just for a DD car.
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LOOKING TO BUY: LS1 - prefer Trans Am or Formula, but will consider an SS or Z/28. MUST BE 6-speed and ttop - pm me! Now considering all 6-speed LS1 GTO's also.
-1970 Ford Torino Cobra "N" code 429 - 4 speed - driveable project car
"My car has so much power that when I'm going 55, I can pass someone who is going 65." (a completely serious quote from a tard I know about his 2 door '89 accord) | 
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11-10-2008, 11:45 PM
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#15 | | It's not mine! woo hoo!
Join Date: Jun 2003 Location: McLean, VA
Posts: 4,817
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Quote:
Originally Posted by chadaclysm How much does it cost to replace all that? Nothing performance special, just for a DD car. | www.rocksandracingllc.com | |
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11-10-2008, 11:55 PM
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#16 | | Registered User
Join Date: Aug 2008 Location: Virginia
Posts: 44
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Quote:
Originally Posted by demonspeed | Ouch! Thanks for the bad news.
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LOOKING TO BUY: LS1 - prefer Trans Am or Formula, but will consider an SS or Z/28. MUST BE 6-speed and ttop - pm me! Now considering all 6-speed LS1 GTO's also.
-1970 Ford Torino Cobra "N" code 429 - 4 speed - driveable project car
"My car has so much power that when I'm going 55, I can pass someone who is going 65." (a completely serious quote from a tard I know about his 2 door '89 accord) | |
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11-11-2008, 12:49 PM
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#17 | | Staging Lane
Join Date: May 2002 Location: Arizona
Posts: 78
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I have an '05 and the first thing that usually breaks is your bank account. Parts for the GTO's are not cheap.
Seriously though..........clutch, rear diff, axle stubs, cv joints.
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2005 GTO | |
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11-12-2008, 11:34 PM
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#18 | | Teching In
Join Date: Aug 2007
Posts: 6
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haha, first true broken part on mine after 25k miles was the #7 piston ringland :-(
but it brings upon fun things.... creditors, bills, long hours at work, 800rwhp | |
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11-13-2008, 01:23 AM
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#19 | | Launching!
Join Date: Jun 2006 Location: myls2.com
Posts: 212
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dont listen to anyone else .......................I KNOW BETTER THAN ANYONE WHAT BREAKS FIRST,.........................no one else will be honest but my personal experiance with my own car and running a club i can tell you first hand the first thing you will break is your PIGGY BANK TO MOD....LOLOLOLLOLOLOLOL
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official member of the 600+RWHP club...with a magnacharger,on my 4480lb goat... | |
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11-13-2008, 04:27 AM
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#20 | | 11 Second Club
Join Date: Aug 2005 Location: driving my 88 integra :(
Posts: 1,210
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Quote:
Originally Posted by tha joker dont listen to anyone else .......................I KNOW BETTER THAN ANYONE WHAT BREAKS FIRST,.........................no one else will be honest but my personal experiance with my own car and running a club i can tell you first hand the first thing you will break is your PIGGY BANK TO MOD....LOLOLOLLOLOLOLOL |
this is true 
__________________
lincoln is on the $5 bill, washington is on the $1 bill now that obama is our next president we finally have somebody to put on food stamps.
"Racing is life. Anything before or after is just waiting." -Steve McQueen
2005 Pontiac GTO (LS2 M6) Phantom Black Metalic (new dyno numbers coming soon)
Cam: 226/226 591/591 112lsa, Kooks Long Tubes with Cats, Borla Cat Back, Nitrous Outlet LS2 Plate system | |
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