Cheap Limited Slip Diff?

A&Q about 350Z
Q:

I currently own a base model and am looking to add a little punch to the car.
Before that, my thought was that I needed to upgrade the diff so I have both rear wheels working for me.
(Am I understanding that correctly? A limited slip diff will send more power to the whell with more traction whereas an open diff will send the power down the path of least resistance, or the wheel that is already spinning)
Online I haven't found one for less than $1100
I am not going to add too much power, planned mods include, intake, exhaust, headers, crank pulley and maybe a chip.
A:

cusco and KAzz make LSD's they're both in the low/mid $900's
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03 CS Touring
VIN #189
A:

i thought it was standard on Zs. no?
_____________________________________________
'05 350Z Chrome Silver Touring
'73 240Z
A:

not on base model
1984 300ZX Turbo 5 Speed - 38k miles
1969 Z/28 Camaro 4 Speed - 42k original miles 06Touring redline 6 speed
A:

An LSD will not increase hp, it will just distribute it for better launches and better handling. Your hp at the wheels will stay exactly the same.
'03 350Z Redline
JWT Pop Charger
JWT clutch
JWT lightened flywheel - 14lbs
Kinetix Racing plenum
Grounding kit
A:

HOWEVER, if you also get the LSD decal it will most definitely add 10-15hp.
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'05 350Z Chrome Silver Touring
'73 240Z
A:

That contact info would be much appreciated....Thanks!
A:

I really think you'll be happy with the quaife LSD. It does fit the base model 350Z but I think there is an additional modification - Shaif knows. Being gear type it is very quiet and it is pricey, but real heavy duty and quality. It also comes with a warranty even when raced. I would stay away from the NISMO clutch type LSD. The NISMO is GREAT (perhaps the best) for drag racing and adjustable, but makes a lot of noise, clicking sounds, for street use. And it requires more maintenance (clutches wear out and have to be replaced). I have never bought anything from Sharif, yet, but he does have a reputation for honesty, good customer support, and often having the lowest prices around on 350Z aftermarket parts. And he can probably sell you any LSD on the market for 350Zs. He can also tell you all the details of how each performs and advantages/disadvantages thereof. I was very impressed with quaife LSDs long before I knew Sharif from 350Z car websites. And he is a 350Z guy all the way. Over 600 hp and over 600 lb ft torque to the wheels on his 350Z, merciful Georgia!! But his engine is fully built to handle that type of power, and mine is not, alas... I eventually plan to buy a quaife for my 350Z after I pay for a lot of other modifications. There is a quaife LSD for 350Zs for both the 6 MT and auto tranny. Good luck. I think the quaife is a lot better than the stock viscous LSD I have on my 350Z. By the way, I do not work with Sharif in any way and have no financial interests whatsoever in his business. Uh oh, I just checked Sharif's website and it is $1460. He did have a group buy a while back with a much lower price.
Shaif:
704-553-6121 M-F 9-6 EST
Here is some info from the quaife website:
The Quaife torque biasing differential enables your car to accelerate quicker and corner faster. How?
By getting the power to the ground!
The Quaife Differential powers both drive wheels under nearly all conditions, instead of just one. With an ordinary open differential, standard on most cars, a lot of precious power is wasted during wheelspin under acceleration. This happens because the open differential shifts power to the wheel with less grip (along the path of least resistance). The Quaife, however, does just the opposite. It senses which wheel has the better grip, and biases the power to that wheel. It does this smoothly and constantly, and without ever completely removing power from the other wheel.
In drag-race style, straight-line acceleration runs, this results in a close to ideal 50/50 power split to both drive wheels, resulting in essentially twice the grip of an ordinary differential (they don't call open diffs "peglegs" for nothing).
In cornering, while accelerating out of a turn, the Quaife biases power to the outside wheel, reducing inside-wheel spin. This allows the driver to begin accelerating earlier, exiting the corner at a higher speed.
The Quaife also controls loss of traction when the front wheels are on slippery surfaces such as ice and snow or mud, providing the appropriate biased traction needed to overcome these adverse conditions. The Quaife Differential provides constant and infinitely variable drive. Power is transferred automatically without the use of normal friction pads or plates seen in other limited-slip designs.
The Quaife's unique design offers maximum traction, improves handling and steering, and puts the power where it is needed most. A definite advantage whether on the track or on the street.
The Quaife is extremely strong and durable and since the Quaife is gear operated, it has no plates or clutches that can wear out and need costly replacement.Cutaway of Quaife ATB Differential ©2004 Quaife
The Quaife is great for street driving or racing. Racers don't have to put up with locking mechanisms or spools that created unwanted understeer under power, or in the case of front-drive cars, even tear the steering wheel out of their hands when cornering. Because it behaves like an open differential during ordinary driving, street drivers will have trouble telling it's there until pushing the car's limits.
The Quaife has been proven in everything from SCCA Rally to Formula 1. It provides autocrossers with such an advantage, it has become "required" equipment for a winning effort.
More and more auto manufacturers are specifying the Quaife ATB Differential as original equipment in their high performance models - for good reason - it works!
The Quaife ATB Differential comes with something else other's don't have:
a Limited Lifetime Warranty. This warranty applies even when raced.
Post Edited (May 15, 7:52am)
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