Friend is buying posi and gears this week and is looking for some imput. I had Auburn Pro and was happy with it. Any expierence with other brands would be appreciated (Eaton, Moroso, Powertracks).

Matt383

 

I have an Auburn high performance series in my S-10, it works good for a light vehicle.
My brother has an Eaton in his stock 1989 4x4 silverado, the eaton has different springs available to adjust preload and it comes with carbon fiber clutch disks that operate smooth and requires no special friction additive.

 

i've got slp's take-off posi. it works perfectly for me, especially for the price ($100). but, it probably won't be strong enough for serious power.

www.slponline.com

Pat

------------------
'92 Firebird 305 TBI
3.73 Posi
ASCD Ram Air Hood
14X3 K&N
'00 WS6 Exhaust
'00 16x8 Wheels

http://www.geocities.com/birdv8

 

I second the SLP take-off. Very cool unit, does the trick too.

------------------

• 89 Formula 305 WS6
  SFC's, LCA's, Air Foil
  Spohn Panhard Bar
  Flowmaster Cat Back, Tranny Cooler
  A/F Ratio Meter (not a mod but it sure spurs interest)
  Trans Temp Gauge
  Most "Free" Mods
  3:73, Zexel Torsion Posi
• 90 Eagle Talon 2.0
  (Winter Beater)
  Mods? Um, no

 

I just installed the auburn posi myself,I only have a 305 but I'm sure it could handle more power.

 

Another one for the slp zexel torsen. At $99, you can't find a better differential.

 

Buddy here has a highly modified, street/emissions legal ZZ3 TPI, estimated 400HP. He's had factory, Auburn (not Pro) & Eaton posi's, trouble with each. He called SLP about their Zexel, told them what he had and the problems he's having, they told him, "You have the best possible right now with your Eaton. Fix what's wrong with it, or get a 9" or 12-bolt."

He's tempted to go with a PowerTrax, but doesn't have a non-posi carrier.

That doesn't exactly anwser your question, but makes PowerTrax look pretty good to me.

------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

Another option is a 9 bolt. They are stronger than a 10 bolt, but not as expensive as a 9 inch.

The 9 bolt carrier is entirely different than a 10 bolt which is what makes it a lot stronger (but still far from a 9 inch).

If your making more than 500rwhp, you should be running a 9 inch.

Miles

------------------
88 427 Camaro
12.18 @ 113mph 1.75 60ft
Currently installing 3.73's into my 9 bolt (YES,it is a 9 bolt & YES they are 3.73's, not 3.70. 4.11's to follow soon )
www.koolmeister.com

 

How much power can the Torsen hold up to? Also, what abou thte heavy duty torsen that you can get from SLP? I'm planning on 430-450 flywheel HP, and need something to hold up to street use, with a few passes down the 1/4 each year.

------------------
Working on:
'84 Z28 LG4 305 with 208,000 original miles!
Dual electric fans (from a formula).
145 MPH IROC Speedo
430 HP 350 (ZZ430) Coming soon! (Building it myself, so I don't get those AWESOME valve covers!)

Starting to look like the Kicker poster child!

ASE Certified Master Tech
+ L1 Advanced Engine Performance
+ X1 Undercar Specialist

And....A sig. that's getting way too long!

 

Zexel Torsen
28-spline Moser axles
Differential support cover

Good enough for full burnouts and 12-flat times. I'm probably pushing 450 rwhp.

If you're running serious hp, don't go with Auburn. I fried mine in less than one year.

------------------
Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig) with 50-hp nitrous: 12.043 @ 112.86 mph.
ATI D1SC (10-psig): 12.056 @ 116.62 mph.
All stats are altitude corrected for 3,100 feet using NHRA's Altitude Correction Table.

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

are you running an auto or manual trans?? i think a lot depends on which trans you use. As far as I know, automatics make the rear end and axles hold up better unless you go with a trans brake.