How to change the ratio of my rear differential

Tiny
VICTOR65
  • 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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Friday, April 13th, 2012 AT 5:45 AM

9 Replies

Tiny
FIXITMR
  • MEMBER

You mean ring and pinions?

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Friday, April 13th, 2012 AT 6:32 AM
Tiny
VICTOR65
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Yes

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Friday, April 13th, 2012 AT 7:00 AM
Tiny
FIXITMR
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Do you know what the 2 ratios are?

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Friday, April 13th, 2012 AT 7:49 AM
Tiny
VICTOR65
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The one from the svx is 3.9 and the one from the legacy is.44

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Friday, April 13th, 2012 AT 5:00 PM
Tiny
FIXITMR
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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?

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Friday, April 13th, 2012 AT 5:52 PM
Tiny
FIXITMR
  • MEMBER

Was there a reason you wanted to do this much extra work? Gas mileage?

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Friday, April 13th, 2012 AT 5:54 PM
Tiny
VICTOR65
  • MEMBER

The legacy trans is going into the svx because the trans on my svx is shot

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Friday, April 13th, 2012 AT 6:32 PM
Tiny
VICTOR65
  • MEMBER

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

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Friday, April 13th, 2012 AT 6:41 PM
Tiny
FIXITMR
  • MEMBER

Why is it a problem? Ratio does not seem that far apart? Do axles fit in the 444?

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Friday, April 13th, 2012 AT 10:12 PM

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