1998 GT Auto <acronym title="transmission">Trans</acronym> - Other years compatibility? - Ford Mustang Forum
 
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post #1 of 5 (permalink) Old 4 Weeks Ago Thread Starter
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Unhappy 1998 GT Auto Trans - Other years compatibility?

Greeting to all Mustang lovers out there! I'm on my 15th Mustang!

My 1998 GT starting slipping pretty bad going into first gear. It would take 2-3 seconds to engage, but once it did, it was fine. It did this for about two weeks.

I took my kids on a ride to the "donut shop" as they call it, as I often have, and did a few smokey spins just to keep the tire makers in business.

When I was done, the car would only go about 3 miles per hour no matter what I did. I limped it home and on a downhill, it actually engaged second and drove fine. But as soon as I slowed down, I was back to the 3 mph limit.

So I figure I need to swap the transmission. I'm confused as which other year models the 98 GT auto is compatible with.

Car-part.com says the 98 used either a F8ZP-BA, or a PKF-AB. It claims the 97 uses a 8-280, while some sites say all 97-04 use a 4R70W. So I'm confused as which years, if any, I could potentially use to swap other than another 98.

If anyone could enlighten me, I would be grateful!

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post #2 of 5 (permalink) Old 4 Weeks Ago
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You should mention if you are interested in a "plug and play" swap. Why? Because that's the difference between all 4R70W's are the same verses having the transmission just "bolt up" and "plug in" with zero modifications.

There's a very good technical FAQ regarding how to adapt different model years transmission for different "applications".

https://forums.tccoa.com/990-automatic-transmissions/

There are other model year 4R70W may interchange if things like:
  • The DTR is reversed or swapped.
  • The tail shaft adapter housing is swapped
  • The solenoid harness is modified.
  • The correct speed sensor is used (OSS vs VSS)



2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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post #3 of 5 (permalink) Old 4 Weeks Ago Thread Starter
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Thanks for info Mr. Burns! I guess I want a "plug and play" swap! Looking for ease and simplicity. I'm in the DFW area with dozens of junkyards, so I doubt I'll have any problems finding what I need (at least I hope not).

So, what other years would provide with a PNP swap?
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post #4 of 5 (permalink) Old 4 Weeks Ago
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Quote:
Originally Posted by Twinbopilot View Post
So, what other years would provide with a PNP swap?
the data from car-part.com is good for a solid "plug and play" swap. The salvage yard industry is very good with "interchange" data.

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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post #5 of 5 (permalink) Old 4 Weeks Ago Thread Starter
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So if I understand you correctly, only a transmission from another '98 will be PNP?
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