04-09-2012, 09:44 PM | #29 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Brand new rear end gears need break-in before putting a full load on them. Sure someone didn't romp on it to hard before the ring and pinion were worn in?
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04-09-2012, 09:52 PM | #30 |
Drives: 04 Silverado Join Date: Jun 2010
Location: Floriduh!
Posts: 1,113
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Probably forgot to put oil in it....
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04-09-2012, 09:52 PM | #31 |
Drives: 2010 2SS/RS IBM Black Polished Join Date: Feb 2009
Location: Colorado
Posts: 2,108
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yeah LPE has been selling those very same American Gears 373's for some time now until GM grabbed all the stock up to build these rear ends.
I know two guys with them and they both had a specific break in schedule for them. And yeah you can sure hear them... but its a good thing not a bad thing. Also god only knows but he could be hearing some of the whine from the SC as well. All of these little issues can be attributed to the unknown sounds that no-one has ever heard before. But in reality it is the sounds that only will be emitted by a ZL1. This is not an SS set up and in no way should be compared to it. The set up on the AG 373 is so much nicer than the set up and spacers required on the 391's and 410's from the un named aftermarket competition...lol Hopefully someone like Scott that has been in a test vehicle will chime in and confirm the gear sounds and break in requirements which will set folks at ease a bit. Or most of the guys that have done gear mods can confirm this difference as well. I really dont think there is an issue and would hate to see this get blown out of proportion and turn into something that everyone thinks they are having a problem. This is more than likely exactly what a brand new AG 373 is supposed to sound like. Just sayin!
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418 Stroker, 621RWHP 648 lbs TORQUE Built by Laramie GM Auto Center Tuned by Nick at Mac Autosport. EForce SC, 2 3/4pulley,LPE dual fuel pump, JRE Twin fuel rail upgrade, posi clutch kit, RX oilcatch can and breather, Callies Compstar crankshaft and rods, Racing bearings, CP -13.8 race pistons, steel rings, Comp Cams X6 blower cam, Springs, HD timing chain and tensioner, Doug Thorley Tri Y LT headers, 89.7lb injectors, RPM rollbar, DSS1400 shafts, Simpson 5 pt harness, BMR Toe rods and trailing arms, led lights, RPM input and output shafts
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04-09-2012, 09:57 PM | #32 | |
Drives: 2010 2SS/RS IBM Black Polished Join Date: Feb 2009
Location: Colorado
Posts: 2,108
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Quote:
And they may just find out that GM will want it to go thru the break in period before the swap anyway. Geez.. If they replaced exhaust systems because they smelled when new GM would go broke.
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418 Stroker, 621RWHP 648 lbs TORQUE Built by Laramie GM Auto Center Tuned by Nick at Mac Autosport. EForce SC, 2 3/4pulley,LPE dual fuel pump, JRE Twin fuel rail upgrade, posi clutch kit, RX oilcatch can and breather, Callies Compstar crankshaft and rods, Racing bearings, CP -13.8 race pistons, steel rings, Comp Cams X6 blower cam, Springs, HD timing chain and tensioner, Doug Thorley Tri Y LT headers, 89.7lb injectors, RPM rollbar, DSS1400 shafts, Simpson 5 pt harness, BMR Toe rods and trailing arms, led lights, RPM input and output shafts
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04-09-2012, 10:51 PM | #33 | |
I used to be Dragoneye...
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Sorry for your luck, mcamisgroup! Hope everything moves along quickly! |
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04-09-2012, 11:01 PM | #34 |
Drives: 2500HD 2016 Z06 Join Date: May 2009
Location: Lancaster PA
Posts: 206
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Wow I didn't know a test drive was part of a PDI. I think someone went out and beat your car and now are making excuses.
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04-09-2012, 11:31 PM | #35 |
Drives: Synergy Green 2SS/RS/HURST Join Date: Aug 2010
Location: Saratoga Springs, NY
Posts: 442
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The Titanic was "indestructable" too.
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2011 2SS/RS - Factory Hurst - Synergy Green - Cyber Gray Rally Stripes - Jet Black Interior - Born on 10/4/2010
2G1FT1EW7B9128807 Ordered: 8/6/2010 1100: 8/6/2010 2000: 8/23/2010 2051: 8/10/2010 2500: 8/24/2010 3000: 8/25/2010 3100: 9/8/2010 3300: 9/8/2010 3400: 9/11/2010 3800: 10/4/2010 4000: 10/4/2010 4200: 10/4/2010 5000: 10/13/2010 6000: 10/14/2010 |
04-09-2012, 11:40 PM | #36 | |
CaRaHoLiC
Drives: '12 ZL1,67 Cam,68 Biscayne 427 4 sp Join Date: Aug 2011
Location: B.C. Canada
Posts: 1,701
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Quote:
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2012 ZL1
2.55 upper, 10" lower pullies, Innovators west billet hub and sfi balancer, solid blower drive isolator, 50 mm idler kit, full length S/S headers no cats, comp cams custom grind cam, comp roller rocker trunion kit, comp push rods,dual valve springs retainers and locks, Injector dynamics ID850 inectors, Rotofab ZL1 cold air kit, Lingenfelter 160 thermostat, Rotofab intercooler reservoir, stock plugs, LS7 90mm throttle body, GTO clutch reservoir mod, my own custom catch can, Tuning by Jannetty, install by me. |
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04-10-2012, 12:08 AM | #37 | |
Drives: 23 LT1/22 Colorado TB/69 Chevelle Join Date: Jun 2006
Location: Greenville, Tx
Posts: 4,970
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I saw a new 2500HD with an oil line let loose on a PDI test drive before. Technician was watching his gauges like he was supposed to and saw the sudden drop in oil pressure and shut the thing down on the street. Another tech brought some tools and oil and they fixed it on the side of the road. |
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04-10-2012, 12:24 AM | #38 | |
Drives: 69 Chevelle SS396 2013 ZL1 Join Date: Mar 2010
Location: West
Posts: 700
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Quote:
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04-10-2012, 02:05 AM | #39 |
Fabricator
Drives: 2011 2SS Summit White Join Date: Jun 2011
Location: Langdon, AB
Posts: 505
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Brutal. Seems odd. Another delay. Feel sorry for your nerves. Hopefully the new set-up is bullet proof for you.
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Roto-fab CAI
Unobtainium Welding Exhaust ARH LT's 393whp L99 GPI VVT Turbo Cam-in |
04-10-2012, 03:13 AM | #40 |
Drives: 2010 2SS/RS LS3 A6 Join Date: Mar 2011
Location: West Haven, UT
Posts: 790
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I've never heard of a technician driving a car to make sure it's ok. Isn't that what quality does at the GM plant? Not to mention, if I'm spending upwards of $60K for a car I don't want ANYONE driving my car other than taking it off the truck. I would be pissed and I would be asking a lot of questions. I think your tech friend did you a bad favor. Just my opinion of course. But I would have left instructions with the dealer that NO ONE drives the car. Period!
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04-10-2012, 04:17 AM | #41 |
Drives: 2012 SS/RS Convertible Join Date: Dec 2011
Location: Virginia
Posts: 217
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I took my Z06 in for a recall on a gas cap or some such nonsense. Set my Window Valet to reflect high speed driven. Clocked the tech doing 52 mph in "the parking lot". Why would think that I was asked. Showed them. Busted!
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VA SSHEVY
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04-10-2012, 07:20 AM | #42 |
Drives: 2002 BMW M5 Join Date: Jun 2011
Location: Aldie, VA
Posts: 250
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For other manufactures a PDI does require you to drive the vehicle. This is completely normal. Audi for examply drives their R8's for 30-50 miles before the car is even delivered to the dealership.
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