rumblebox

iTrader: (9)

Is this a factory posi from an LT1 car? If so, how does it compare to the LS1 posi? I got a free 10 bolt from an LT1 car, and it took me a sec to figure out how to get the axles out. lol

rumblebox

iTrader: (9)

Ok. So apparently it's an auburn. Arentthey an upgrade on firehawks from the stock posi? Did i make a good score here?

garygnu

its a 3 channel rear.its a better diff then most 10 bolts.who will set it up for you ?

guppymech

iTrader: (7)

It's a 3 channel abs Auburn diff which is more durable than a torsen but in the long run it's still a 7.5 piece of junk that we all have to deal with.

rumblebox

iTrader: (9)

Yea i know. Ive catastrophicly destroyed 2 of them in the past before switching to an S60. Now im just going for gas mileage and drivability. Im even putting 2.73's in it.

rumblebox

iTrader: (9)

Im doing the setup. I just use white lithium grease to see the pattern. It's always worked before.

flintwrench69

iTrader: (11)

Thats a more durable carrier than a torsen because you dont have to worry about those 4 bolts coming loose & or breaking that are on the torsen. I put one in my 10 bolt when I had it, knew someone that had a bunch of Fbodys & parts & didnt cost me anything. Mine handled a lot of track passes & never broke. Posi worked great too. I dont think they are rebuildable though but I would run it.

SparkyJJO

iTrader: (11)

Going down (numerically) in ratio doesn't always equal better mpg. I got better mpg out of my 98 going to a 3.42 rear axle from its stock 3.08 which I didn't expect. It wasn't a 1/2 mpg either, but a solid 2mpg increase on the highway.

FirstYrLS1Z

iTrader: (4)

Being that it's a 3 series carrier,a 2.73/3.08 gearset(2 series carrier required) WILL NOT be usable. You're limited to 3.23 as the lowest numerically.

rumblebox

iTrader: (9)

Well ****. Anyone wanna trade for a series 2?

Im having a hard time deciding between buying 3.23's and buying a 2 series posi.

FirstYrLS1Z

iTrader: (4)

since you had to go to S60,what are your mods that required the strenght of an S60 ?
if you're heavily modded,2.73 might not be 'drivability' friendly.

for a stock LS1 A4,real world freeway legal speed mpgs' are
2.73-25.9
3.08-24.7
3.23-24.5
3.42-23.8
3.73-23.0
4.10-22.2

rumblebox

iTrader: (9)

Im well aware that 2.73's wont like a big cam/stall. i took the cam/stall out of the car and went with a more streetable setup.

I bought the s60 when i had plans for 1000+hp then had a daughter.

And i consistantly got 26-28mpg's with 3.23's when the car was exhaust only.

FirstYrLS1Z

iTrader: (4)

With the mods removed,2.73s' would be 'stock friendly'. Since setup would be required in either situation,you didn't state what you have on hand to build a rear. From this post,we know you have a 3 series Auburn differential.
Is your car 3 channel ABS or 4 channel ABS & TC ?

rumblebox

iTrader: (9)

It's a 3 channel