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Registered User
Join Date: Aug 2011
Location: Tennessee
Posts: 37
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Help with a trans number
I picked up a trans today and the person that I picked it up from thought it was a 3 speed. From the look of the trans and the number on it i think it is a 4 speed LSD. Here is the number 722 270 12 01 722 316 02 298711. I really need a 3 speed as mine is toast. So if any one would want to do a swap of some sort let me know.
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03-09-2012, 02:32 PM
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Registered User
Join Date: Aug 2011
Location: Tennessee
Posts: 37
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Just a standard 4 speed from an 83 US. I still need a 3 speed trans. Time to hunt one down.
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03-09-2012, 03:17 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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What is wrong with the current trans?
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03-09-2012, 03:42 PM
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Registered User
Join Date: Aug 2011
Location: Tennessee
Posts: 37
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It makes a bad clanking sound and will not pump any fluid. I had a bad knocking sound coming from the trans area a few weeks ago. Thought it was a bearing in the TT or TC you know how the sound travels back there. I loosened up the TT clamps(tightened the front clamp it was very loose) and re torqued them I also checked the TC flexplate it was tight. Soon after that the noise stopped. So I did a filter and fluid change and now it wont take more then about 3 quarts of fluid and makes that knocking sound again.
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03-09-2012, 04:30 PM
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Moderator
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Bummer you weren't closer to San Diego. I'm about to do the 3 to 4 speed swap in mine. My 3 speed works fine but blew a seal when my throttle got stuck. Not sure which one but don't really care since I won't be rebuilding it. It used to leak at the front pump seal a little, so I think this is the one that blew out.
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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03-09-2012, 06:09 PM
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Registered User
Join Date: Aug 2011
Location: Tennessee
Posts: 37
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I was wondering how difficult it is to remove and change out the trans pump. I havent dove into an auto that far but having one sitting there already pulled is very tempting.
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03-09-2012, 06:40 PM
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Moderator
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Drop the Trans. That's about how difficult it will be. You have to do it anyways. From there its just some bolts and getting the right seals/pump. But sounds like yours is more than just a pump.
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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03-09-2012, 07:51 PM
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