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3.9 lsd in EL 

 

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 Post subject: 3.9 lsd in EL
Posted: Thu Nov 17, 2005 5:23 pm 
Oompa Loompa
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gday everyone
im planning out turboing my car car with a snort stage 3 kit and hopefully gonna get around 250rwkw with wold3d,injectors and so on.i also wanna change my 3.08 ss to a lsd but have been told with the auto cant go above 3.45 as it causes problems.is this true?and also if anyone can recomend either a 3.45 or 3.9 as being better for this combo.also an everyday car around town. cheers
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Posted: Thu Nov 17, 2005 5:24 pm 
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3.7's might be a better medium :?

 

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Posted: Fri Nov 18, 2005 7:07 am 
Getting Side Ways
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Yeah 3.9 is quite a chnge and with a turbo until your used to it wouldnt be to great for your fuel economy and espescially all the tyre shredding :wink:

 

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Posted: Sun Nov 20, 2005 10:18 am 
Getting Side Ways
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3.7's are good mate,

with the turbo you wouldnt want your first gear to be to tall, or it will be useless. I can still manage around 60-70 km/h in first with the 3.7's.

 

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Posted: Mon Nov 21, 2005 6:35 pm 
Getting Side Ways
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How much are u looking to pay for 3.7 or 3.9 gears in the LSD have you got any quotes yet...im also interested in doing something similar

 

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Posted: Mon Nov 21, 2005 8:39 pm 
Getting Side Ways
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Diff technics here in Sydney will do a drive in drive out ratio change to either 3.7, 3.9 or 4.11 for 1100. Its a day job, just book it in, drop it of in the morning, and pick it up in the afternoon. Its what i did with my last car and i highly reccomend them
Brett

 

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Posted: Mon Nov 21, 2005 9:46 pm 
Getting Side Ways
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I think you would be better off with the 3.45's than the 3.9's. What are the other turbo guys running in the diff?

Torque wont be a drama with the turbo, I reckon with the 3.9's you'll just be spinning the bloody wheels everywhere..lol

I got my ratio change, 3.45 > 3.91, including new bearings, and re-shim LSD for $950 at Gear Exchange in Sydney.
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Posted: Tue Nov 22, 2005 11:58 am 
Oompa Loompa
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yeah im really unsure what gears to put in as i want it to be snappy but still able to get traction and drive on the highway reasonbly well.i can get 3.45 gears for 600 is this allright?cheers
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Posted: Tue Nov 22, 2005 12:00 pm 
Oompa Loompa
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yeah im really unsure what gears to put in as i want it to be snappy but still able to get traction and drive on the highway reasonbly well.i can get 3.45 gears for 600 is this allright?cheers
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Posted: Tue Nov 22, 2005 1:10 pm 
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Dude with the turbo honestly 3.45 will do the job fine to put the power down slightly quicker a 3.7 no need to go any higher.

Any higher and deending on how your gonna have the turbo car tuned and setup even a 3.7 might be just a tyre shredder off the line

 

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Posted: Tue Nov 22, 2005 1:41 pm 
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for the $1100 does this include re calibrating the speedo and everything?

Cheers
David

 

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