Need help deciding transmission part number

Transmissions and Rear Ends

  1. SlantSixSullivan

    SlantSixSullivan Well-Known Member

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    I am pretty sure I'm dealing with an A998, built in 1988 (for 1989) from the Kokomo plant. If anyone can verify that, I'd appreciate it. I bought the car from the original owner, an older gentleman, which leads me to believe it is original to the car. 1989 Fifth Avenue, 318 2bbl

    Part number above pan is PK4505206 9953 8186
     
  2. Mikes5thAve

    Mikes5thAve Well-Known Member

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    It looks correct for the year. It could also possibly be a 999 since it seems to have 8 1/4 axle.
     
  3. SlantSixSullivan

    SlantSixSullivan Well-Known Member

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    What makes you mention the 8 1/4? Just curious because I didn't think any of the above information would tell that. I do believe it is an 8 1/4 but lotsa folks telling me otherwise. Thanks
     
  4. Mikes5thAve

    Mikes5thAve Well-Known Member

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    Because of your other post about it.
    My 1984 has heavy duty suspension and 999 so I'm guessing that if one came with a 8 1/4 it might also be a 999.
     
  5. SlantSixSullivan

    SlantSixSullivan Well-Known Member

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    Gotcha. That would be nice. I may have to count clutches to be sure. I cant find a reputable source of transmission part numbers past 1979
     
  6. Chrycotwo

    Chrycotwo Member

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    The transmission was built at Kokomo (PK) and the part number for the transmission is 4505 206. Unfortunately I do not have a parts books with part numbers above 43xx xxx. My 1984 edition only goes up to 4378 xxx.

    The 9953 is the date of production - Oct 27, 1988.

    8186 is the sequential production number - the 8,186th transmission built that day.

    I own a 1988 Plymouth Caravelle Salon - better known south of Canada as a Gran Fury Salon.
     
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  7. BudW

    BudW Moderator Staff Member

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    I couldn't find a PK4505206.

    I did find a 4505207 ('88-89 M-body 318 999 w/2.24) and PK4505209 ('88-89 M-body 318 727 w/2.24).
    No other numbers even close were found in my manuals.
    BudW
     
  8. SlantSixSullivan

    SlantSixSullivan Well-Known Member

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    Those were the two numbers I found as well. I had to double check to make sure I wrote down the correct number. Thanks, Bud
     
  9. Mikes5thAve

    Mikes5thAve Well-Known Member

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    Its listed in the 1989 parts book as an alternate number for 998/999.
     
  10. SlantSixSullivan

    SlantSixSullivan Well-Known Member

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    I guess I'll be counting clutches to be sure. Do you know if there is any difference other than the amount of friction discs? Between the 998 and 999. I'm wondering if the drums are the same
     
  11. BudW

    BudW Moderator Staff Member

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    Typically (not in all cases, though) the drum is almost the same, between those with a disk number difference - except for they machine the snap ring grove. A person can machine the metal plates thinner (not recommended) or find thinner clutch disks (or both), but it is easiest (and best) to find a drum already machined for the higher clutch disk count.

    A couple of replacement drums can upgrade most transmissions, when preforming a transmission overhaul.

    In cases of A727 (or the larger 4-speed A727 versions) is to upgrade them using clutch drums used in diesel pickups. That won't work in your case, but it is the same concept.
    BudW
     
  12. SlantSixSullivan

    SlantSixSullivan Well-Known Member

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    Pulled the pan on the trans yesterday, did not want to go any further than a filter change and band adjustment since the transmission was operating fine when I pulled it. So, I did not count clutches to determine the exact model of it. If and when it comes time for a rebuild, I'll find out what it is. The fluid was clean, all parts were in good shape so I slapped a new filter in and got the bands adjusted. Thanks for all the input, everybody.

    On a somewhat related note, I did measure the ring gear on the differential I posted pictures of as well. It indeed measures 8 1/4"