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Jim G's assessment was spot on. This totally transforms the vehicle - it really feels a thousand pounds lighter. The stock SSR kinda reminds me of Anna Nichole Smith when she first had her show, beautiful but bloated. Get the weight off, and she's HOT. That's what I'm driving now.

Also:

- Eliminates that annoying transmission hunting in hilly areas at moderate speeds - there is always enough torque on tap.

- Also, in my case, totally eliminated a small amount of driveline slop that is typical in rear drive long driveshaft vehicles. No more clunking under load/unload/load conditions.

After break-in, I'm off to the dragstrip for some Hemi hunting...
 

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psychoslaphead: I knew you would like it!

Here are the key questions I need to ask to build up our body of knowledge:

1. Do you have any new or even just louder rear end noise?

2. What backlash clearance was used on your ring and pinion?

3. What BRAND of ring and pinion did you use?
 
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Jim,

I had a small amount of zing when I first picked it up, but it seemed to diminish with some driving. Give me a few days to break the gears in and I'll let you know if it goes away entirely. I'm so jazzed about the other benefits that I can live with a little added noise if need be. I'd rather have that than the driveline snatch I had before (which I feel in almost every rear drive vehicle I test drive for our shop). My gear guy went through several sets to find one with the mating and finish he wanted, I'll find out what brand he ended up with. He did tell me the spec called for .08-.12 so he set it in the middle at .1.
 

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Pyscoslaphead Awsome :thumbs :thumbs :thumbs
What gear did you finally use. I had mine out in the rain last night and it would get squirrly when it shifted into second. gotta luv it.
 

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psychoslaphead: I think you meant .008 to .012.

Motive Gear calls for a target of .008" and a minimum of .006".

Yukon calls for .004" apparently.

Mine was set at .008", but the installer plans to try tightening it to .006" or even slightly less, as it is noisy when cold, but goes completely silent when sufficiently hot (when the gears have expanded due to the heat).

I am tracking this because I suspect that some of the rear end noise that rodders have tolerated for a lon g time as a necessary byproduct is not in fact necessarily necessary, as your experience and russr04's have shown.

Jim G
 
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Jim,

Oops, lost some zeros somewhere.

I'm posting a link with more info than you'll ever want to know about this stuff. They quote Motive street sets as .008-.012. I still don't know what brand my guy used, as he had to go out of town for a few days.

http://www.drivetrain.com/ringpinioninstal.html

I do have a slight "zing" noise now - it's hard to hear over the Magnaflow exhaust rumble and the roar you get from the roof storage compartment though. Mine MAY go back for a tweak like yours - I'm a little reluctant to, because I just don't want to mess up that nice tight driveline feel I have now. I'll wait awhile to see how the gears seat first. Besides, I'm having a blast booting this thing around. I was going through an intersection today - floored it and lit up the rears from a rolling start. Sure wouldn't do that before :thumbs
 

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"Zing" is a good word to describe what I hear too. It is inaudible (at least to MY ears!) until I hit 35 mph, but then is audible and gets louder and higher in frequency with speed.

A casual passenger might confuse it with road tire noise - it's that SORT of sound.

It diminishes and then vanishes if I run at 70 mph or so for several miles.

I spent a lot of time at MTI Racing with Reese the owner early this morning (I will post all the juicy findings in a separate thread Saturday - I am way too tired right now. I had real adventure there today!). He has personally set up MANY Corvettes (manuals and autos) with 3.73 and 4.10 axles in their transaxle. He uses Motive Gear parts (like in my SSR now). He told me that they always run the clearance MUCH tighter than Motive Gear recommends, as they tend to loosen up at least .002" after a little breakin, AND he thinks their recommendations are too loose. He sets them up s tight as .004" successfully.

That seems to match well with my onw theories. I currently have an .008" setup which is a little noisy. Reducing it .002" gets it to .006". I can see the .004" really easily.

Jim G
 
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OK, sounds like you and I are in the same boat - mine are set even looser than yours and we have the same noise - and that tightening up to .004 - .006 gets us where we need to be. My guys at the shop cringe at those numbers, but they all have mud running 4x4s that get weekend abuse, and diff noises are routine from monster gears driving monster wheels and tires :)

Lemme guess, you sneaking in a rear mount turbo on us?
 
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OK. Mine's a Redline Red:



But sometimes I wish I would have bought Smokin Asphalt:

 
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