Can I use a T-Bird IRS 7.5" differential? What about the internal parts?

Stuntman Mike · Apr 16, 2009

I found a great deal on a 7.5 differential from a 1990 thunderbird with independant rear suspension.
From the housing, it doesn't look like I can just swap it in as a whole.
The only thing I really want from it is to pull the spiders and replace the old ones in my ranger.

Also, just how much of it can be used on a ranger?

RangerSVT · Apr 25, 2009

You might want to double check that. I could be wrong, but I think the IRS in the Tbird is 8.8...If it is 7.5, you can use the ring and pinion, spiders, and carrier, but you can't use the housing. The diff cover can be used, and is prefered due to the increased capacity as well as heat dissipation
SVT

pdmustgt · Apr 26, 2009

T-bird IRS is 8.8

Faster7 · Apr 28, 2009

pdmustgt said:
T-bird IRS is 8.8

If it's a V8 or supercharged and still has the factory rear it's an 8.8.

NA V6 models are 7.5.

There may be a difference with the spider gears since the IRS stub axles may be retained differently than normal C-clip axles, but the carrier (besides the spider gears) will be the same.

Stuntman Mike · May 7, 2009

That diff is already sold as nobody responded in time, so no need to elaborate now.

Can I use a T-Bird IRS 7.5" differential? What about the internal parts?

Stuntman Mike

15+ Year Member

RangerSVT

Oct 09 OTOTM

pdmustgt

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Faster7

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Stuntman Mike

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