Do any of you know about the zexel torsen take off. I am thinking about putting one on my 89 camaro with 3.73 gears, but I want some feedback on them...
slp engineering, part # 64501T

 

I don't see why they would be bad. They are practically brand new!

Just make sure you have 28 spline axles!!!


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• 89 Formula 305 WS6
  SFC's,
  LCA's,
  Air foil
  Flowmaster cat back
  Tranny Cooler
  A/F Ratio Meter
  Trans Temp (not a mod but it sure spurs interest)
• 90 Eagle Talon 2.0
  (winter beater)
  Mods? HA! its a rice burner!

 

I've had mine about 3 weeks. No complaints, but I'm not making a whole lot of power with my L03. If you're making a good amount of power, you might want to consider the HD version. I'm not exactly sure on the differences, but I'm happy with just the T/O model.

Pat

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

 

Love mine.
Bites when I want it to. Doesn't chirp around slow turns. The torque biasing design is the "way to go."

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87 IROC 350
Mods: 3:42 Torsen, pocket ported 083 heads, complete Edelbrock exhaust, Most free mods, Most little mods, aluminum d/s. Edelbrock STB, boxed rear suspension pieces, urethane bushings everywhere.
Stock cam, chip, runners, base, and trans
13.94@103mph, 2.25 60'
Recent stuff: SSM sfc's, Homemade relocation brackets, Ported SLP runners, ported base, EGR!
Current/future projects: homemade torque arm, and 27x10 Hoosiers (need wheels!), and Prom Burning
Planning new engine build, possibly 383 w/ TFS 23*

 

it is still full time posi right, like if u do a breakstand, both tires will burn right?

 

I called Slp. The OEM takeoff is twice as strong as the rearend you have now. The HD Posi is 4 times as strong.

 

Sorry, don't know what a brakestand is, but if you're sitting still and drop the clutch at 3 grand both wheels spin.

I've got that exact same posi in my 89 with Richmond 3.73s. My best advice is to make sure you have the 28 spline axles, I found out I had 26 when the car was on the lift and the GM axles were about $500 or so dollars for both so I just bought a pair of Moser axles for about $270 with the metric studs. The Moser axles then had to be machined (to a smaller diameter) to fit the billet c-clip retainer in the ZT Posi, plus the axles were .040" too long. The extra length was Moser's fault, we mic'ed the thickness of the stock cross pin and the billet block from the SLP and they were almost exactly the same, less than .001"-.002".

Remember to add the friction modifier, ZT told me that this is necessary to prevent noise from building up in the unit, even though it doesn't have clutches. I used Mobil 1 synthetic gear oil in the rear and it's holding up great. Granted I haven't been to the track yet, but both wheels do spin when traction is lost.

Don't expect too much more of a "bite" when you launch. I expected to really plant the tires like my bro's 5.0 Stang but the Posi really didn't help that much. I'm in the process now of saving up for a good torque arm, which according to Spohn is the main component in providing anti-squat, which will help the launches.

Hope this helps, if you need any help or have any questions just e-mail or leave a message here,

Jason

[This message has been edited by 89BlwnRs (edited February 19, 2001).]

 

Let it be known that Tim doesn't plan on putting slicks on the car either. We talked before about it.
Slicks will tear our stock rear ends a new *** hole (pun intended). Since you're thinking of keeping the stock rear end then I say go for the OEM $99 unit.

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, Jon (91 RS too many mods to list)
Dale Earnhart, you have done so much, you will be missed.

 

Hery just so yall know the HD is worth the extra money because it dosen't cave any posi cones or clutches to wear out. This basically means it's a posi unit that you don't have to rebuild as it gets older since it really dosen't have any of the typical internals that fail on our cars or on the regular take off units.

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1988 Camaro
305 bored .030 over
Stock TBI
Aluminum radiator
No smog pump
gutted factor cleaner
cam ground to crane specs
timing advanced 9 degrees
no thermostat
other than that its bone stock and ran a 16.4 @ 82 mph with earth shattering wheel hop and a 2.88 60 ft time. (this was with the rebuild and cam only)

 

RacerJ, I have the $99 non-HD one and it doesn't have clutches either.

Jason

 

Both HD Torsen and oem Torsen are Invex gear units (no cone clutches). The main differences are in the strength of the case, the thickness of the ring gear flange, the beefiness of the "paddle" or pin. I have a couple of pics of the oem take-off Torsen vs the HD Torsen side by side on my bench if someone wanted to post it up for me.

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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

 

Well I'll be. I was going by a magazine article that had them installing a zexle HD and a flywheel and all this stuff I beleive in a 97. From it said I was under the impression that it was only the HD that was set up like that. Thanks for setting the record straight cause I was considering the HD for all the wrong reasons.

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1988 Camaro
305 bored .030 over
Stock TBI
Aluminum radiator
No smog pump
gutted factor cleaner
cam ground to crane specs
timing advanced 9 degrees
no thermostat
other than that its bone stock and ran a 16.4 @ 82 mph with earth shattering wheel hop and a 2.88 60 ft time. (this was with the rebuild and cam only)

 

No one answered so I am going to ask again, if I put the Take-off ZT on mine, is it full time posi, like if I do a breakstand or a burnout, both tires leave tread right?

 

Yes Tmonee........it should spin both the tires.

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1988 Camaro
305 bored .030 over
Stock TBI
Aluminum radiator
No smog pump
gutted factor cleaner
cam ground to crane specs
timing advanced 9 degrees
no thermostat
other than that its bone stock and ran a 16.4 @ 82 mph with earth shattering wheel hop and a 2.88 60 ft time. (this was with the rebuild and cam only)

[This message has been edited by racer J (edited February 21, 2001).]

 

Yup, during a burnout both tires will leave tread. I know because I have that same Posi in my 89. The unit seems to lock-up pretty solidly too.

Jason