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9 inch rear end??

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Old Jan 18, 2009 | 11:19 AM
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Default 9 inch rear end??

If i put the 9 inch 10 bolt rear end in from http://www.exoticperformanceplus.com....html?item=145
(Moser 9 Inch Rearend with Truetrac Limited Slip or Locker option)
will it last and is it a good idea to put in. I have a 95 z28 with about 335 hp and I'm going to put 315/35/17 in the rear. Ill be running 4:11's also with 31 spline. the price is about $2700
Am i on the right track here, any info or tips would be appreciated.
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Old Jan 18, 2009 | 11:24 AM
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your on the right track
if anyone tells you to run a 12 bolt instead there on crack.
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Old Jan 18, 2009 | 11:26 AM
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Go for the 33 spline upgrade, Then you will have the same rear as me. Not a bad piece.
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Old Jan 18, 2009 | 11:27 AM
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if i go from the stock gears to 4:11 will i notice a big
diffrence??
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Old Jan 18, 2009 | 11:38 AM
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Originally Posted by z2895
if i go from the stock gears to 4:11 will i notice a big
diffrence??
yup
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Old Jan 18, 2009 | 06:51 PM
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The 4.11 gears are a great way to go for your horsepower level. I would go with the Truetrac with 31 spline axles, and I would add the lower control arm relocation bracket option. Installing your lower control arms in the lowest hole will normally give the car a lot more traction. Bob
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Old Jan 19, 2009 | 01:17 AM
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Originally Posted by mred
your on the right track
if anyone tells you to run a 12 bolt instead there on crack.
crack hay a built 12 will run with a 9 anyday of the week seen it first hand have one holding 1200hp since 94 strange axles and a spool 4.56 4500 stall pretty hard for me to say anythang bad about a 12 bolt
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Old Jan 19, 2009 | 06:33 AM
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Originally Posted by Exotic Performance Plus
The 4.11 gears are a great way to go for your horsepower level. I would go with the Truetrac with 31 spline axles, and I would add the lower control arm relocation bracket option. Installing your lower control arms in the lowest hole will normally give the car a lot more traction. Bob
this would be great for you and lik he said add the lca relocation brackets i just bought a used moser 9" 31 spline locker havent got it in yet but i lik it alot.
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Old Jan 19, 2009 | 06:43 AM
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9" will out-last a 12 Bolt.
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Old Jan 22, 2009 | 08:56 PM
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going from stock gears to 411 gears wat will be the rpm difference??
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Old Jan 22, 2009 | 09:07 PM
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another question to guys.. truetrac or locker.. im using the car just for driving around not to the track..and will truetrac give me posi?? thanks
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Old Jan 22, 2009 | 11:38 PM
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Get the fill cap added and get 1/2" studs.
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Old Jan 22, 2009 | 11:52 PM
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Originally Posted by z2895
another question to guys.. truetrac or locker.. im using the car just for driving around not to the track..and will truetrac give me posi?? thanks
I went with the locker because I'll be racing a lot and it was a cheap upgrade. After some reading, some peoples TrueTracs have lasted a long time and others didn't. So I didn't want to take a chance.
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Old Jan 23, 2009 | 04:11 AM
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Originally Posted by z2895
another question to guys.. truetrac or locker.. im using the car just for driving around not to the track..and will truetrac give me posi?? thanks
If I remember correctly, 4.11 gears will give you approx 2600 rpm at 60 mph on a stock height tire.

The Truetrac is what I would go with for a daily driven street car that is under 600 hp. If you're planning on future high horsepower upgrades, then the locker and 35 spline axles are a cheap upgrade that will keep the rear from being limited in it's use. Bob
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Old Jan 23, 2009 | 05:57 AM
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truetrac will give me posi right? and also when i look at the rear ends how do you keep the axles in. i kno with stock they use c clips but with the aluminum housing how do u get in there and lock them in??
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Old Jan 25, 2009 | 07:54 AM
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any help?
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Old Jan 25, 2009 | 12:33 PM
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yes a truetrac is posi, and the axles are held in by the brake backing plates....10x better then GM junk c clips. You can have your axles out in 10 minutes....
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Old Jan 25, 2009 | 06:14 PM
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DETROIT TRUETRAC

* Smooth operation
* Performs open until needed
* Fully automatic limited slip

The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction. Recognized not only for its toughness but also it’s smooth and quiet operation.

Engineered to work efficiently in front and rear axles, semi-floating (C-clip axles) and transfer cases. Power transfer is so smooth, it literally goes unnoticed by the driver - even in front wheel drive axles.

Proven design, low cost and effective performance, all make the Detroit Truetrac limited slip differential the ideal choice for a wide variety of vehicle applications. No maintenance - Just Traction! Bob
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Old Jan 30, 2009 | 06:57 PM
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I would say do the locker and the 35 spline. Your diff will be bullet proof for when you run the dual stage 400 hp nitrous set up.
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Old Feb 2, 2009 | 12:17 AM
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I would go with a Truetrac with your power level or even almost double that like Bob said. I had a locker for the street and hated it and went to a Truetrac. Mine was used so maybe it was jacked up, I dunno. I think I would try a spool before another locker but that is just me.

There are tons of folks on here that have had trouble with 12 bolts. A 9 inch is superior but is not quite as efficient. If you're an auto you can get by with a 12 bolt but if you're an M6 a better choice is a 9 inch. You are on the right track!
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