Mechanics

HOW TO CHANGE THE RATIO OF MY REAR DIFFERENTIAL

1992 Subaru SVX • 131,000 miles

I am swapping my trans for a 98 legacy and I need to change the ratio of the rear differential and I dont now if I swap the rack and pinions for the svx to the legacy trans or the other way around thanks
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Victor65
April 13, 2012.



You mean ring and pinions?


Tiny
Fixitmr
Apr 13, 2012.
Yes


Tiny
Victor65
Apr 13, 2012.
Do you know what the 2 ratios are?


Tiny
Fixitmr
Apr 13, 2012.
The one from the svx is 3.9 and the one from the legacy is.44


Tiny
Victor65
Apr 13, 2012.
I take it you want to keep the 3.9? You would put the 3.9 into legacy trans since that's the 1 going into car?


Tiny
Fixitmr
Apr 13, 2012.
Was there a reason you wanted to do this much extra work? Gas mileage?


Tiny
Fixitmr
Apr 13, 2012.
The legacy trans is going into the svx because the trans on my svx is shot


Tiny
Victor65
Apr 13, 2012.
Ok so the 98 legacy trans is going into the svx but the problem is the rear differential has a diffrent ratio so I need to change the ratio of the rear differential


Tiny
Victor65
Apr 13, 2012.
Why is it a problem? Ratio does not seem that far apart? Do axles fit in the 444?


Tiny
Fixitmr
Apr 13, 2012.