which posi?
Thread Starter
Junior Member
Joined: Feb 2006
Posts: 23
Likes: 0
Car: 87 Firebird
Engine: 305 4bl
Transmission: 700R4
Axle/Gears: 2.73
which posi?
Which posi unit do you guys think is the best performing and the most durable? A eaton posi or auburn, or something else? For street and strip. Anybody have bad experiences with either?
Supreme Member
Joined: Apr 2004
Posts: 1,002
Likes: 0
From: Boscobel, Wisconsin
Car: 1987 Iroc-Z
Engine: 355
Transmission: 700r4 w/ about 7500 miles on rebuild
...limited slip is positraction...
Limited slip - when a certain amount torque is applied then both wheels spin
locker - when one wheel spins, the other engages
both positraction
And i have an eaton 3.73... i love it
EDIT:: Eaton makes both lockers and limited slip... i would suggest limited slip for street strip... from what i've been told/read, lockers are better for hauling
Limited slip - when a certain amount torque is applied then both wheels spin
locker - when one wheel spins, the other engages
both positraction
And i have an eaton 3.73... i love it
EDIT:: Eaton makes both lockers and limited slip... i would suggest limited slip for street strip... from what i've been told/read, lockers are better for hauling
Last edited by Rabbitt; Feb 13, 2006 at 09:01 PM.
Thread Starter
Junior Member
Joined: Feb 2006
Posts: 23
Likes: 0
Car: 87 Firebird
Engine: 305 4bl
Transmission: 700R4
Axle/Gears: 2.73
thanks, also i was wondering can i run 28 spline axles if i get an eaton for 28 splines? I have a 1987 10 bolt which i guess has the 26 spline and id rather be running 28.
[QUOTE]Originally posted by Rabbitt
...limited slip is positraction...
Limited slip - when a certain amount torque is applied then both wheels spin
locker - when one wheel spins, the other engages
both positraction
And i have an eaton 3.73... i love it
EDIT:: Eaton makes both lockers and limited slip... i would suggest limited slip for street strip... from what i've been told/read, lockers are better for hauling [
Positraction is a OLD Chevolet term for a LIMITED SLIP.
...limited slip is positraction...
Limited slip - when a certain amount torque is applied then both wheels spin
locker - when one wheel spins, the other engages
both positraction
And i have an eaton 3.73... i love it
EDIT:: Eaton makes both lockers and limited slip... i would suggest limited slip for street strip... from what i've been told/read, lockers are better for hauling [
Positraction is a OLD Chevolet term for a LIMITED SLIP.
Trending Topics
Supreme Member
Joined: Mar 2002
Posts: 1,654
Likes: 2
From: Lower Salford, PA
Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
.
Positraction is a marketing name that GM used in the 60's to sell their Limited Slip Differential. GM has not used that term since the 70's, but it seems it stuck with a lot of motorheads.

Positraction is a marketing name that GM used in the 60's to sell their Limited Slip Differential. GM has not used that term since the 70's, but it seems it stuck with a lot of motorheads.
Supreme Member
Joined: Apr 2004
Posts: 1,002
Likes: 0
From: Boscobel, Wisconsin
Car: 1987 Iroc-Z
Engine: 355
Transmission: 700r4 w/ about 7500 miles on rebuild
bleh, to me posi = both wheels spinning
sorry.. l lol, i knew posi was the chevy way to say limited slip, ford, gm, chrysler all have their own name..
sorry.. l lol, i knew posi was the chevy way to say limited slip, ford, gm, chrysler all have their own name..
Originally posted by ricky223
thanks, also i was wondering can i run 28 spline axles if i get an eaton for 28 splines? I have a 1987 10 bolt which i guess has the 26 spline and id rather be running 28.
thanks, also i was wondering can i run 28 spline axles if i get an eaton for 28 splines? I have a 1987 10 bolt which i guess has the 26 spline and id rather be running 28.
Supreme Member
Joined: Apr 2004
Posts: 1,002
Likes: 0
From: Boscobel, Wisconsin
Car: 1987 Iroc-Z
Engine: 355
Transmission: 700r4 w/ about 7500 miles on rebuild
if u are putting any amount of power to the ground, i would go with some hardened Moser axles... thats what i have
Senior Member
Joined: Aug 2005
Posts: 618
Likes: 0
From: San Leandro(Oakland)
Car: '92 Toyota Pickup
Engine: 22R-E
Transmission: 5sp Manual
Axle/Gears: 4:??
IIRC "positraction" is short for positive traction or maybe I just made it up but that's what I have always thought.
[QUOTE]Originally posted by superGMman
IIRC "positraction" is short for positive traction or maybe I just made it up but that's what I have always thought. [/QUO
You are wrong and POSITRACTION was GM's Chevolet trade name for a LIMITED SLIP in the 60's. Slang term used by the younger ones is Posi which is incorrect.
IIRC "positraction" is short for positive traction or maybe I just made it up but that's what I have always thought. [/QUO
You are wrong and POSITRACTION was GM's Chevolet trade name for a LIMITED SLIP in the 60's. Slang term used by the younger ones is Posi which is incorrect.
Last edited by DJP87Z28; Feb 21, 2006 at 06:30 PM.
Originally posted by ricky223
posi=power to both wheels, if you know so much about limited slips why cant you spell it? LINUTED SLIP?
posi=power to both wheels, if you know so much about limited slips why cant you spell it? LINUTED SLIP?
Last edited by DJP87Z28; Feb 21, 2006 at 06:35 PM.
Dude, I think you seriously need to consider getting professional therapy for your hangup with people calling it posi. Gimme a break man. Are you a copyright lawyer or something? Who the hell cares what term is used as long as everyone knows what's being referred to. I bet you'd really go postal if some uninformed young pup happened to call it a Sure-Grip or something along those lines huh? Slang term used by the younger ones??? Yeah OK. I'm 35 and have always called them posi, when I don't feel like spitting out the mouthful that the word "limited slip" entails. Get over it for chrissake!
Originally posted by Pat Hall
Dude, I think you seriously need to consider getting professional therapy for your hangup with people calling it posi. Gimme a break man. Are you a copyright lawyer or something? Who the hell cares what term is used as long as everyone knows what's being referred to. I bet you'd really go postal if some uninformed young pup happened to call it a Sure-Grip or something along those lines huh? Slang term used by the younger ones??? Yeah OK. I'm 35 and have always called them posi, when I don't feel like spitting out the mouthful that the word "limited slip" entails. Get over it for chrissake!
Dude, I think you seriously need to consider getting professional therapy for your hangup with people calling it posi. Gimme a break man. Are you a copyright lawyer or something? Who the hell cares what term is used as long as everyone knows what's being referred to. I bet you'd really go postal if some uninformed young pup happened to call it a Sure-Grip or something along those lines huh? Slang term used by the younger ones??? Yeah OK. I'm 35 and have always called them posi, when I don't feel like spitting out the mouthful that the word "limited slip" entails. Get over it for chrissake!
Note: I am not your DUDE... AH I think it's kinda sad that this guy posted a question, and the majority of this thread is made up of people arguing about what to call something. To each his own and be done with it, try and help each other instead of fighting. I personally have an auburn unit and have never had any problems with it. Hopefully others can chime in with some HELPFUL info, good luck.
Supreme Member
iTrader: (7)
Joined: Aug 2005
Posts: 1,068
Likes: 1
From: Ohio, near columbus
Car: 89 iroc-z
Engine: 305tpi
Transmission: wc-t5
Axle/Gears: 10 bolt 3.08 posi (4 now)
Originally posted by Pat Hall
Dude, I think you seriously need to consider getting professional therapy for your hangup with people calling it posi. Gimme a break man. Are you a copyright lawyer or something? Who the hell cares what term is used as long as everyone knows what's being referred to. I bet you'd really go postal if some uninformed young pup happened to call it a Sure-Grip or something along those lines huh? Slang term used by the younger ones??? Yeah OK. I'm 35 and have always called them posi, when I don't feel like spitting out the mouthful that the word "limited slip" entails. Get over it for chrissake!
Dude, I think you seriously need to consider getting professional therapy for your hangup with people calling it posi. Gimme a break man. Are you a copyright lawyer or something? Who the hell cares what term is used as long as everyone knows what's being referred to. I bet you'd really go postal if some uninformed young pup happened to call it a Sure-Grip or something along those lines huh? Slang term used by the younger ones??? Yeah OK. I'm 35 and have always called them posi, when I don't feel like spitting out the mouthful that the word "limited slip" entails. Get over it for chrissake!
I know the dicitionary definition for dude would i post it, hell no it's worthless and a waste of time and brain cells.....
so is reading all the worthless non meaningful corrections i always hear on tgo.
Get a life DJP87Z28.....
Member
Joined: Jan 2000
Posts: 408
Likes: 0
From: In the sticks near Woodland,CA, USA
Car: 91 Formula WS6
Engine: 305 TPI
Transmission: five speed
For that kinda $ you could spring an extra $50 or so and get the ultimate 10bolt posi, the Zexel Torsen T2R. You need a 28 spline set-up.
http://www.stranoparts.com
Hi Zephyr!
http://www.stranoparts.com
Hi Zephyr!
Originally posted by DJP87Z28
You are wrong and POSITRACTION was GM's Chevolet trade name for a LIMITED SLIP in the 60's. Slang term used by the younger ones is Posi which is incorrect.
You are wrong and POSITRACTION was GM's Chevolet trade name for a LIMITED SLIP in the 60's. Slang term used by the younger ones is Posi which is incorrect.
Your right.
I would get the Eaton POSI unit over the Auburn POSI unit. I had an Auburn POSI unit and it basically blew up into alot of little POSI pieces. Now I have no POSI in my car. I plan on getting an Eaton POSI unit soon.
See DJP87Z28, you may be right but every body still knows what POSITRACTION is so get a grip.
Supreme Member
Joined: Jan 2003
Posts: 1,931
Likes: 1
From: Ontario, Canada
Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
Originally posted by 91drag
or you can do as i did buy a spool it is cheaper
or you can do as i did buy a spool it is cheaper
Also aren;t them Zexel units take offs ?
Member
Joined: Jan 2000
Posts: 408
Likes: 0
From: In the sticks near Woodland,CA, USA
Car: 91 Formula WS6
Engine: 305 TPI
Transmission: five speed
You used to be able to buy the take off Zexel Torsen's used in 4th gens from SLP, they are long gone. These are not the Zexel Torsen T2R, not even close! The T2R is the next best thing to a Locker, and more streetable. A spool for the street? Uh uh.
Member
Joined: Feb 2006
Posts: 284
Likes: 0
From: arkansas
Car: 1928 dodge coupe, 64 1/2 mustang
Engine: 350,289
Transmission: munice 4 speed,c4
Axle/Gears: 9" 3.00, 9" 3.25
i dont have any problems with mine and it is a lot cheaper, if you don't mind tire noise while making sharp turns. and when my car had a big block no probs breaking any thing except axles but now not using stock ones so no more prob's
Search ebay for the cheapest prices on the eaton unit. I've seen them as low as $369 from some of the big drivetrain sellers on there. Summit and Jegs can't even come close to those prices for them.
Oh and sorry for getting off on a rant about the **** retentive guy who can't stand us calling them posis! I'm normally a stickler myself for spelling and the like, but he was just being plain silly "DUDE"! Lol.
Oh and sorry for getting off on a rant about the **** retentive guy who can't stand us calling them posis! I'm normally a stickler myself for spelling and the like, but he was just being plain silly "DUDE"! Lol. Supreme Member
iTrader: (1)
Joined: May 2001
Posts: 1,638
Likes: 0
From: Greenwood, Indiana
Car: 1984 Trans Am
Engine: Vortec 355
Transmission: TH-700R4
Axle/Gears: GM Axles and GM 3.73
since my car has 100,000+ miles on it i figured i would buy a kit with new gears and everything.....here is the kit that i got
http://cgi.ebay.com/ebaymotors/Eaton...QQcmdZViewItem
i don't have it installed yet because i can't find anyone to do it yet....but once i do i'll let ya know how it works out
http://cgi.ebay.com/ebaymotors/Eaton...QQcmdZViewItem
i don't have it installed yet because i can't find anyone to do it yet....but once i do i'll let ya know how it works out
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 7,964
Likes: 4
From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
The Zexel Torsen SLP Take Off units suck really bad when cornering hard and trying to accelerate, you end up getting the 1 wheel peel effect from the lighter wheel and I couldn't steer the car with the throttle. On the street and straight line it was great, just not good for auto-x.
Senior Member



Joined: Jun 2005
Posts: 691
Likes: 16
From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
i would go with the eaton posi too. they seem to have the better reputation when it comes to posi units. i have ridden in cars on the street with spools and not so cool. every turn in the road the axle would pop out of lock and make a horrible clunk. my father-in-laws 68 stang has one.
i myself call it a posi, but have the knowledge to know that they are one in the same, and have to constantly tell other guys "younger" that limited slip+posi= the same damn thing. for people to get irate about the same thing with different names, is why people tend to stay away from websites or refuse to chime in and give a helping hand. so.....can't we all just get along?
i myself call it a posi, but have the knowledge to know that they are one in the same, and have to constantly tell other guys "younger" that limited slip+posi= the same damn thing. for people to get irate about the same thing with different names, is why people tend to stay away from websites or refuse to chime in and give a helping hand. so.....can't we all just get along?
Thread
Thread Starter
Forum
Replies
Last Post
KO1
Engine/Drivetrain/Suspension Parts for Sale
16
Oct 15, 2015 05:00 PM




