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Old 11-29-2002, 09:02 AM   #1
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Question zexel-torsen differential anygood?

is it one of those you get what you pay for kinda things or is it worth it.im on the broke side right now.and how can you tell if a differential is good or not? meaning if you bought it from someone and you dont know if its messed up?
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1987 IROC-Z28
355 TPI
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STILL TO COME,
3:73 W/AUBURN POSI
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Old 11-29-2002, 12:59 PM   #2
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not beeing able to drive it will be hard to tell if the clutches are any good.. you can get SLP takeoff's at a good price check out there web site....
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Old 11-29-2002, 01:13 PM   #3
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i should have explained myself better. i am talking about the ones from slp for $99.thanks
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1987 IROC-Z28
355 TPI
58MM HOLLEY TB
HOME PORTED PLENUM
LT1 INJECTORS
HEDMAN HEADERS
CRANE AFPR
MSD WIRES
JET FAN SWITCH.
3'' 2 chamber flowmaster cat-back system.
MSD 6AL IGNITION
4'' COWL HOOD

STILL TO COME,
3:73 W/AUBURN POSI
4TH GEN INTERIOR
ALL AROUND SUSPENSION KIT
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Old 12-03-2002, 09:38 AM   #4
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The Zexel-torsen difs have no clutches, The ones that SLP sells are just take offs from 4th gens that get the HD dif put in when they are modded to SS or Firehawk status.

Torsen diffs are very reliable and witout abuse they last the life of the vehicle.
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Old 12-03-2002, 02:59 PM   #5
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If it's good enough for GM to put it behind an LS1 with a warranty, I'm sure it's good for any mildy modified thirdgen. I just recently put one into my car and I'm very happy with it so far.
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Old 12-03-2002, 03:03 PM   #6
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Thumbs up

They can easily handle mid-low 1.7 60' on ET Streets ... on my SS. I'd say it is good.
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Old 12-03-2002, 06:19 PM   #7
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Mildly modded? It's worked for me for 1-1/2 years with no problems and my car is "slightly" more than mildly modded. That's my daily driver that's raced at the track about four times per year.
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Old 12-04-2002, 07:30 AM   #8
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Yours is holding up, and I've seen stock 4th gens scatter the rear end. Most of them will hold up fine, but the more horsepower you have, the closer you get to grabbing that short straw one of these times. You're pushing close to the 11s now, aren't you? That's impressive for a 7 5/8" rear, but I suspect that it's just a matter of time until you watch your axle roll past your door.

I guess it's the same situation as people's luck with T5s. Some guys can keep them together down into the 12s, and other guys grenade them with LG4s.

But for what it's worth, it's your good experience with that differential that convinced me to get it along with Moser axles instead of an Auburn diff.
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Old 12-04-2002, 04:07 PM   #9
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The SLP limited slip from the 4th gen convervsion is a great buy as long as you have:
1) 10-bolt rear axle assy
2) 28 spline axle shafts
3) 3-series diff carrier

If you do not have the above its not going to work for you, so save the $99.
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Old 12-04-2002, 09:52 PM   #10
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Jim,

It's like ANY product, be it a TV, a boat, or a computer. Some people have the best of luck and swear by a particular name brand, while others have one bad experience and curse that brand. It's the way of the world, in my opinion.

Whether I consider myself fortunate is irrelevant. The fact is though, that I've had absolutely no problems with my setup. And I should mention that Tim Burgess has had the same luck with his Zexel-Torsen and Moser axles. There is one difference between his and mine though. He has a T-5 and launches at 5,500 rpm -- talk about a shock load!! I launch my 700R4 from "only" 1,000 rpm so the shock load cannot compare with Tim's. What's even more amazing about Tim's setup is that his T-5 has never been out of the car. He's the original owner of his '92 Z28 and his car now has over 150k miles on it. BTW, he's already run high 11's with his 305. I must also mention that it's his daily-driver and is fully emissions compliant, just like mine.

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Old 12-05-2002, 12:16 AM   #11
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well i am putting one in my car right now... no complaints from me... i will tell you if i like it later in the week... but i do have a friend who is on this board running that same SLP pullout unit running a 94 vert z28 355 Procharged... he put down 475+ to the wheels a couple of months ago... he has no problems out of it at all...
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Old 12-05-2002, 12:43 AM   #12
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Willie,

You have an amazing and beautiful Camaro

Of course, I've told you that several times now but it just needs repeating. That Camaro is a beautiful machine

What would be the most cost effective posi setup for my rear end though? It is a stock 2.73 1986 Sport Coupe drum rear that we changed to a 3 series carrier with 3.42 gears.

It seems that the 86s have 26 spline axles and can't use the $99 SLP units

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Old 12-05-2002, 07:21 AM   #13
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5,500 rpm launches on an 11 second car with a 150k mile untouched T5. Wow! That's very impressive. Statistically, half of his car should be broken.

Hopefully I'll have the same kind of luck with my setup. I'm running a freshly rebuilt WCT5, Zexel & moser axles. I had planned on saving for a 9" after the T56 swap, but maybe I'll just put some money into c-clip eliminators and a stronger diff cover.
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Old 12-05-2002, 07:24 AM   #14
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Of course, I've told you that several times now but it just needs repeating. That Camaro is a beautiful machine

I appreciate you taking the time to say that. Thank you.


What would be the most cost effective posi setup for my rear end though? It is a stock 2.73 1986 Sport Coupe drum rear that we changed to a 3 series carrier with 3.42 gears.

The way I see it, you have two choices. The first is to go with a Series II Auburn for about $300 and call it done. The second follows below.

It seems that the 86s have 26 spline axles and can't use the $99 SLP units

....unless you upgrade to 28-spline axles!! But don't go with GM's because of the cost. They are about $300 each. Instead, why not go with Moser's, which are about 30 percent stronger than GM's and they run for about $240 per pair!!!

So the second choice is go with the $99 Torsen and $240 Moser's for a total of ~$350. In my opinion, the extra $50 is worth the cost. FYI, the Moser axles work with both drum and disc rears.

Willie
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Old 12-05-2002, 07:29 AM   #15
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5,500 rpm launches on an 11 second car with a 150k mile untouched T5. Wow! That's very impressive. Statistically, half of his car should be broken.

Tell me!! Impressive? I call it unbelievable. I've watched Tim launch time and time again since 1998. The guy flat knows how to drive!!

Hopefully I'll have the same kind of luck with my setup. I'm running a freshly rebuilt WCT5, Zexel & moser axles.

Let's all wish each other luck with this setup. As before, so far so good with mine. The longer mine lasts, the more convinced I am that this is THE setup to go with.

I had planned on saving for a 9" after the T56 swap, but maybe I'll just put some money into c-clip eliminators and a stronger diff cover.

BTW, I do use an aluminum cover with the axle bearing support bolts.

Willie
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Old 12-05-2002, 07:29 AM
 
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