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Which cars came stock with 3.9 LSDs?


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5 replies to this topic

#1 Tom63050

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Posted 09 January 2005 - 11:49 AM

I'd like to know this so that when I look at ads I can tell if the car has one. I really want one for my lifted Loyale and am willing to buy a whole car to get one, especially if it is a fuel-injected 86 or newer wagon. Then I can use the D/R 5-speed and have a spare motor too, plus all the little nickel-and-dime stuff. Basically my own compact junkyard.

#2 grossgary

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Posted 09 January 2005 - 01:08 PM

try doing a search, you'll get tons of commentary on this subject.

easiest to get a 3.7 lsd and convert your existing open 3.9 using the internals of the 3.7. i believe there's information and a write up addressing this. do a search on this group and you'll have plenty to read for quite some time, with lots of lists of vehicles...

#3 GLCraig

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Posted 09 January 2005 - 01:12 PM

The parts books say that a 3.9 LSD was an option on the XT6 but no one on the board has actually seen one. All of the other LSDs will have a 3.7 ratio. Here's what's involved to take a 3.9 and making it an LSD using 3.7 LSD parts.

http://www.ultimates...rticle.php?a=36

#4 Dr. RX

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Posted 09 January 2005 - 02:44 PM

The parts books say that a 3.9 LSD was an option on the XT6 but no one on the board has actually seen one. All of the other LSDs will have a 3.7 ratio. Here's what's involved to take a 3.9 and making it an LSD using 3.7 LSD parts.

http://www.ultimates...rticle.php?a=36


Correction, the parts page at Liberty Subaru states that, my Subaru Parts Book only shows that parts as a LSD rear diff, it doesn't give the ratio. I sent Liberty an e-mail asking them to verify that part number as being a 3.90 ratio. I'm not surprized that they haven't answered.

#5 ezapar

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Posted 09 January 2005 - 03:47 PM

The parts books say that a 3.9 LSD was an option on the XT6 but no one on the board has actually seen one.



I've seen one. It was on/in a XT6 on it's way into Aaron's Auto Wrecking. Couple years ago.

#6 grossgary

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Posted 09 January 2005 - 04:48 PM

best bet is to build one from a 3.7 lsd unit and an open 3.9.

keep your eye on ebay as well, but they'll go for 300+ and i've seen 2 in the past 2 years. you will likely wait a long time before you see one on there though.




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