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EF XR8 LSD into a gli 

 

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 Post subject: EF XR8 LSD into a gli
Posted: Fri Apr 27, 2007 5:41 pm 
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can anyone tell me where i can get an EF XR8 diff (around newcastle/central coast) and how much it will cost, and will it fit straight in?
i'm in the market for a new diff. cheers
Acidic

 

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Posted: Fri Apr 27, 2007 6:26 pm 
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Most wrecking yards will have one, but will ask for upto $1K for it.
XR6 are the same. (ratios can be different)

Slap it straight in!

Average costs for a 3.23:1 or 3.45:1 is about $650 for the LSD, and fitting will vary.

I've a 3.45 and a 3.23 here, but thats no good for you.

 

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 Post subject: Re: EF XR8 LSD into a gli
Posted: Fri Apr 27, 2007 9:47 pm 
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ACIDIC wrote:
can anyone tell me where i can get an EF XR8 diff (around newcastle/central coast) and how much it will cost, and will it fit straight in?
i'm in the market for a new diff. cheers
Acidic
It will fit but you may need XR upper control arms.

More important you will need another speedo drive gear to correct the speedo. If you are auto then you may end up with incorrect shift points if you use the 3.45 ratio.

 

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 Post subject: yeah the same they are at most reckers
Posted: Fri Apr 27, 2007 11:04 pm 
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yeah the same they are at most reckers
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Posted: Wed May 02, 2007 2:20 pm 
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so if i buy the XR8-XR6 diff, complete with axles etc, it will fit straight in?
much work involved? i would imagine it's a simple, unbolt the other and bolt the new one up.

 

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Posted: Fri May 04, 2007 3:56 am 
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just finished the same coverson about two hours ago from 97 xr8 (3.45) to my 94 gli went straight in only thing is you have to use your old top trailing arms and the newer bottom one the rest bolts straght in and did'nt change my speedo drive and it runs fine...
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 Post subject: Re: EF XR8 LSD into a gli
Posted: Fri May 04, 2007 8:29 am 
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Acidic[/quote]

. If you are auto then you may end up with incorrect shift points if you use the 3.45 ratio.[/quote]

Shift points are based on RPM. I've got 3.9's in my xr8 and shift points are fine.
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Posted: Fri May 04, 2007 10:17 pm 
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i did it yesterday i piked up a diff for 500 bucks wit upper and lower control arms and shocks the upper arms wont fit but the lower ones will and my hand brake cable was to short it is a lower ratio its 3 45s but i can smoke second gear and the lower gears increases the rpm by about 200 its an easy swap
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 Post subject: Re: EF XR8 LSD into a gli
Posted: Fri May 04, 2007 11:12 pm 
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Quote:

Shift points are based on RPM. I've got 3.9's in my xr8 and shift points are fine.


Shift points are Speed not RPM based. If you change your diff to a different ratio and left the speedo gear untouched then nothing has changed except your speedo is now out. Correct the speedo by changing the gear and now the shift points will be wrong. The only correct way of fixing this is to install the ECU that belongs with that diff ratio. AFAIK there is no correct fix for ratios above 3.45 in an EF.

 

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Posted: Sat May 05, 2007 4:48 pm 
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