DukeofBird

how hard is it to find a 4 cyl 5 spd with a 3.73 and a limited slip?

DJP87Z28

Might be a hard search, if they still exist.

RB83L69

Hard to say.... I guess that would depend on whether either of the people that have one would want to part with it... last I heard, they both still liked their cars

DukeofBird

i was just wondering if i would get told that it did or didnt exist cause i already have one in the black car that me and firechicken went in on for $75. he got all of the 5 spd stuff, and i got the rest of the car. found out yesterday it already had a limited slip, with the tag and all. firechicken was pissed

billsfirebird

iTrader: (1)

Ive got the 4 cyl/ 5 speed and limited slip 3.73.

firechicken_3

iTrader: (4)

hmm... Now i can't imagine why I was pissed i've got like $500 in my rear, and you get one for $40. Oh well, it would been too late to save me the money, but i coulda bought the whole car then sold you the axle

DJP87Z28

Well GM did make over couple hundred thousand of the Four Bangers. They were a Cheap entry level grocery getter car.
So I would think the attrition rate would have been high over the years but they exisit and use the same 10-bolt rear axle as most 3rd Gen models. I would also guess they seen less abuse then others also.

DukeofBird

quote fromdjp87z28: So I would think the attrition rate would have been high over the years but they exisit and use the same 10-bolt rear axle as most 3rd Gen models

what do you mean most 3rd gen models? the ten bolt was the same as the ten bolt used in any other 3rd gen just minor differences between mine and say an iroc rearend with discs. i realize the nine bolt was an option, but there are far more ten bolts out there that are all the same in our cars (except the disc rears as mentioned before)

DJP87Z28

Ref was made to 9-bolts in some models. Yes, the 10- bolts are the same across all models. Is that clearer for you.

DukeofBird

that is what i thought you were getting at, just wanted to be sure that there werent any other rearends i hadnt heard of yet

Trevor K

All 4cyl's have limited slip???????

I was just going to look at one too for the rearend (Since they're gears are what I want). POSI would be a bonus.

billsfirebird

iTrader: (1)

As far as I know 4 cylinders came with Limited only.....I could be wrong. Ive never heard otherwise.

Trevor K

How does limited slip vary from posi?

And would the limited slip be expensive (Compared to posi) to rebuild if it is gone?

DJP87Z28

For your info a Limited Slip and Posi are thr SAME THING....GM uses the word Positraction (aka Posi) as there name for a Limited Slip Axle. Since they are the same thing they would cost the same to rebuild if it was possible.

billsfirebird

iTrader: (1)

I always new it as a limited slip was a rear that only had one wheel spin and posi was both wheels would lock and be used for traction.


If your right what is the "one wheel" wonder termed?

My bro has a limited slip in his 84 camaro and can only burn out one tire...passenger side.

His 88 IROC put a patch down with both tires and his codes say posi....

I am throughoughly confussed.

DJP87Z28

Why ??? Was the previous Post to hard to understand.
LIMITED SLIP an POSITRACTION (aka POSI) ARE THE SAME IDENTICAL THING.

The RPO code is G80 and states LIMITED SLIP Rear not Posi.....

84TAProject

Limited slip is the same as posi, you are thinking of an open rear that only has the one wheel peel.

billsfirebird

iTrader: (1)

its not that I didn't understand your previous comment, I always thought they were two different things and I was just wanting some clarification. Thank you 84TAproject for describing the difference.

Skatepunk60

Maybe his posi unit is broken or it had been swapped on the 84.

86BirdSE

I have yet to find a 4 banger with a posi in the yards FWIW...

iroc22

Posi-traction was just one of the fancy names to come out of the sixties for Limited-slip. Others were Sure-trac, True-trac..the list goes on.

Even into the 90s American car companies were using different names for limited slip axles. My Jeep has a "Trac-Loc" Dana 35C; but it's really just a limited-slip axle (it doesn't lock the axles and says right on the axle "use limited-slip type lube only")

86BirdSE

A posi uses clutch packs inside of it. It could be that they are worn, the oil additive isn't in or I have also read they lose tension, and I forget the procedure... it was in a Hot Rod article in the mid or late 90's... i'll have to look.

82sportcoupe

my car originally had a 4 cyl/4 speed man. tranny. The rear end is definately a one-tire fryer.

TomP

I hate those Subaru commercials... "Transfers power from the wheels that slip, to the wheels that grip." Damn, I want to punch the announcer in the nose every time; he sounds so smug when he says it.

ANYway, only 4cyl's with manual trannies got the 3.73/open/drum rear. You can also find the 3.73/open/drum rear underneath an '84 Camaro H.O. 3.73 stopped after '85 was over. In fact the last year for the I-4 was '85.

I guess you could call an open diff an "ultimate slip", considering it's not a limited slip

RB83L69

I personally have never seen a rear out of a 4- or 6-cyl F car with Limited Slip, posi, or whatever else you want to call it. All I've seen have been regular open diffs. But there might be a couple of them out there, by accident if not by design, who knows.

86BirdSE

In today's Junk Yard Adventures:

I ran across a TPI 87 T/A that was coded with a 2.73 and Limited slip.... but guess what i saw when I looked underneath. If you guessed missing axles and guts, you guessed right. The TPI motor was gone too. I got the center panel between the tail lights off of it.... everyhting else was pretty well trashed.

But I did get the all of the "collision replacement" parts I needed off of a decent looking 91 V6 bird. Now I truly am a ******* with my maroon hood, bumper and fender. Guess it's time to get to BodyWork 101 class :-)

DukeofBird

for all those who say a limited slip was never put behind a four or six cylinder, i started this post because i have a four banger car with limited slip, and wanted to know how common or uncommon it was. so lets not say it didnt come like that. and some other people who have replied to this post have the 4 cyl 5spd with 3.73 limited slip. so for the record they are out there, just seems like kind of a rarety.

RB83L69

It's also possible that a previous owner swapped one in, again possibly even by accident.... they need a rear end for whatever reason, go to the boneyard and order one for a Camaro or Bird, and end up with a posi.

But I think you about summed it up, it's a rarity no matter how it came about.

DukeofBird

how about this i will go to my garage, look in the piles of carpet from my car, and find the rpo sheet, to see if my 4 cyl 5spd came stock with the 3.73 posi rear.

DJP87Z28

Anyone care now after all these Posts????