BLUE92RS

Does anyone know how well the units work? Why are they so cheap compared to an Aurborn Posi unit?Does anyone know what the difference between the two of them is. The reason i ask is because im getting 3.73 gears and dont want to have a one legger anymore.

badbird88

They are not cheap if you by them brand new. THe take off units are taken out of 4th gen f-bodys that usually have low miles or no miles on them at all that SLP has hopped up and put different posi units in to handle lots of HP. THe Zexel Units don't have clutches and are suppose to be as strong as the cheaper model of the Auburn units and not wear out as quick as the posi units with clutches. My dad bought one a few months ago to put in his S-10 but didn't realize he would need 28 spline axles and his S-10 has 26...which is my S-10 now. I need to buy the 28 spline axles before I put it in. It looks like brand new and no noticeable wear is on it or the gears inside it. THey do not come with a warranty but for $99 I think it's a great deal for a low budget rear-end upgrade.

By the way all 90+ f-body cars have 28 spline axles so you are good to go in that aera. WHat gears do you have now? if they are 3.08 or lower make sure you get the 3.73 gears that will fit in the 3.08 or lower carriers.

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1988 TA 300+hp 350 w/ TBI and Holley TB unit, Holley projection intake,
WC T-5, 3.42 gears w/ Auburn posi. MSD 6A, edelbrock TES headers, dynomax 3" cat and cat-back system, ACCEL coil, polyurethane bushings all around, aluminum driveshaft, Mr. Gasket open air cleaner.

1993 S-10 w/ 4.3L V6 TBI, slightly bigger cam, Mild polish job and 3 angle valve job on heads, Edlebrock TES headers, Dynomax cat back, MSD 6A, ADS chip

2000 Kawasaki KX 125

Godti

Can you tell me the web site for SLP?? I am interested in the upgrade kit.

[This message has been edited by Godti (edited October 25, 2000).]

Kevin91Z

iTrader: (1)

The SLP take-off posi is for 3 series carriers, so you need 3-series gears.

SLP's website is http://www.slponline.com/ Look for the monthly specials.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

zippy

i've bought two of them. one is in my truck and one i put in my buddies. they work great although i'd like a little higher breakaway load. it is really a locker with a lower breakaway load. had no problems with mine or my buddies. no additive needed either. i even have a good couple of pictures of mine in use, just have no clue how to post them. just go to slpeng.com and get the phone no. call them to order.

Godti

What do you mean by 3-series??? I have a 89 trans am, will they have some thing that will work for me?

Where can I find info on the Zexel torsion take off units from slp for $99???

Also I check on the SLP webpage and this is what I found:


Part # Description

62020 3:70 Ring and Pinion -3 Series Carrier (fits: '85-'92 Camaro/Firebird Australian 9-Bolt Rear Axle)

62060 3:73 Ring and Pinion - 3 Series Carrier (fits: '84-'91 Corvette)

62061 3:73 Ring and Pinion - 2 Series Carrier (fits: '84-'91 Corvette)

63002 3:70 Speedometer Gear Set (fits: All '84-'89 Corvette, manual or automatic and Camaro/Firebird)

63004 3:70 Speedometer Gear Set (fits: All '82-'92 Camaro/Firebird, manual transmission only)

63006 3:70 Speedometer Gear Set (fits: All '82-'92 Camaro/Firebird automatic transmission without speedometer cable)

62026 9 Bolt Australian Installation Kit w/o bearings - 3 Series Carrier

62028 9 Bolt Australian Installation Kit w/bearings - 3 Series Carrier

62064 Installation Kit for '84-'91 Vette auto trans. w/bearings - 3 Series Carrier

What one would I need? Or am I looking at the wrong stuff??


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Godti
'89 Trans Am (Red)
305 TBI 5spd

[This message has been edited by Godti (edited October 26, 2000).]

badbird88

Godti,

You will need new axles unless you are one of the lucky ones that got the 28 spline axles for your car. They were rare in the 89 f-body cars and the only way you will find that out is look on the end of the axle which I don't think you can do without pulling the axle out. You can get new Moser axles for around $289 if I remember right and the Zexel torsion unit for $99 and you will be just as cheap if you bought a new Auburn unit yet have stronger axles!

Kevin91Z

iTrader: (1)

3-series means the gear number starts with 3, as in 3.23 and 3.42 and 3.73. Except for 3.08, that is a 2-series, as in 2.73 and 2.56.

The SLP take-off posi is in their monthly specials section, like I said above.

Mo

Godti, the part # is 64501T and its in the internet specials sec., down near the bottom

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90 IROC 5.7l (L98)
ram air, K&N's, air foil,Flows

Godti

So if I am one of the unlucky ones, how many splines do I have?? Is there a gear set that I can get without getting new axles?? Or is that my only choice, new gears= new axles??

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Godti
'89 Trans Am (Red)
305 TBI 5spd

Kevin91Z

iTrader: (1)

The SLP posi is only for 28 spline axles. 26 splines is what came before, and Auburn makes a posi unit for those. I've seen in in Jegs for $300.

rsilver

I changed my 3.08 open to a 3.42 in my 91 RS. I got a very nice used GM ring and pinion from a friend and the Torsen from SLP.
This difference on my car was incredible. I don't have a lot of power but no problems installing or using the Torsen. It works great! I had 28 spline axels though.....bob

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91 camaro RS convert
t-5
open element air cleaner
TBI spacer
Flowmaster muffler

DM91RS

Just for your info I just pulled a shaft from my 89 parts car rear to replace a bent axle on my daughters 90 Trans Am and it was smaller in diameter and had less splines. By the way I also check online yesterday afternoon and found Moser stock style but stronger shafts for less than $150. with 2 day delivery. I'm also considering one of SLP'S $299 Torsen units for my soon to be Vortec 350 91. I traded some cop 350 heads for a new set of GM 3:42's. Good luck!

Dana92RS

Unless there are two different Zexel-Torsen diffs available from SLP, they are only $99. At least right now they are. I ordered one last week and got it on Friday. The part number is 64501T, total including shipping was about $112.

KevinP92Z

There are indeed TWO different Torsen diffs.

First one that everybody has been mentioning for $99 is the oem take off that SLP pulled from the cars to install the Auburn Pro diff that was an option for SS & Firehawk orders. The oem diff is a bit stronger than the oem Auburn diff and is good for many folks. The $299 HD Torsen that SLP sells (399-429 in other company adds in magazines) is very definately different than the $99 oem grade take-offs. I have one of each, the HD for my 92Z, and the $99 take-off for my wife's 96 T/A w/RamAir. The HD case is much heavier & beefier. The "paddle" which separates the axles after the C-clips are installed is a solid rectangular piece of metal (instead of the round pins in Auburns). The take-off paddles have been machined to reduce weight and definately aren't designed as heavy duty as the HD unit is. If someone is really interested in a side-by-side photo, I'll post one.

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KevinP92Z
92 Z28 383 SLP cam,SLP headers,SLP 2ontheLeft,Trick Flow TW heads & pistons,Edelbrock base,Accel SuperRam,52mmTB,Scat Crank & forged ConnRods,MSD 6AL,SLP convertor,Baer 13/12" Track,Moser axles,Hotchkis,Genuine GM 3.42s,SLP HD Torsen,17x9" chrome SS rims
96T/A w/SLP Ram Air,SLP 2ontheLeft, Bilsteins, Baer, Hotchkis, Genuine GM, Torsen
76 4X4 Blazer 400TPI project