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SOLD 18 spline trans

Cuda - Challenger Parts for Sale

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  1. Mopar okie

    Mopar okie Well-Known Member

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    Contact Seller
    I have a 18 spline trans for sale, believe to be 71 E body has duel shifter mounts,stamped numbers B123 casting number is C99129 with H4 above, I bought it used some 40 years ago, probably put 1000 miles on it, my car has just set, going to a od Transmission, it will need seals and 4th gear synconicer. Asking $1,500.00 plus shipping, for more information contact okie. Location Oklahoma. THANKS casting number C99129 with H4 above

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    Last edited: Feb 13, 2019
  2. 70SunFun

    70SunFun Well-Known Member

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    Do you know what the VIN stamping is? I couldn't make it out from the pic. Thanks.
     
  3. Mopar okie

    Mopar okie Well-Known Member

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    C99129 thanks
     
  4. 70SunFun

    70SunFun Well-Known Member

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    Thanks but I believe the VIN stamping is on the machined pad just above and to the right of the casting number. If it's from a 70 E body it should read something like: B 0 100001 (B for Hamtramck, 0 for 1970, and then the last six digits of the VIN). Sometimes it is not legible or very tough to read. Thanks again. You can PM me on this if you prefer.
     
  5. Mopar okie

    Mopar okie Well-Known Member

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    71 18 spline trans
     
  6. 70SunFun

    70SunFun Well-Known Member

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    Thanks for posting the machined pad VIN picture. I think the RS stands for GTX, the 23 stands for a 2-door hardtop, the L stands for a 440 HP engine, and the 9 stands for 1969. I'm thinking the last six digits or so are the sequential serial number of the vehicle identification number. A lot of folks are looking for an 18-spline four speed. I'm sure you'll sell it, good luck!
     
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  7. fastmark

    fastmark Active Member

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    Either someone has changed the tailshaft to the 70 model two shifter mount version or it was a very late built unit. It was installed in a 69 GTX per vin number. Post the vin number and maybe do a search and see what you come up with. The car may still be around and the owner would surely want to buy it. Post it on Moparts with vin number so it will be on the internet.
     
  8. 70SunFun

    70SunFun Well-Known Member

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    I think you're right about the tail shaft being changed or it being a very late built unit. The VIN appears to me to be RS23L9G109289. I believe that would make it an early 1969 unit. Nonetheless it is an 18-spline 4-speed transmission! Fastmark gave excellent advice in doing a search as the car may still be out there and the owner would gladly pay your price, or maybe another 1969 GTX 4-speed car owner who's car has a VIN very close to your transmission might want to have a 'date correct' transmission to their car.
     
    Last edited: Feb 25, 2019
  9. Mopar okie

    Mopar okie Well-Known Member

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    Thanks you guy's are great at decoding. I don't think the tailshaft been swapped, I picked it up over 40 years ago, not that many parts back then. A23 spline housing uses the smaller bearing so couldn't be a 23 spline housing that was swapped. A lot of parts were produced years ahead of time. Bottom line is I don't know.
     
    Last edited: Feb 25, 2019
  10. Mopar okie

    Mopar okie Well-Known Member

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    Looks like a late 69 B body trans
     
  11. 70SunFun

    70SunFun Well-Known Member

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    I believe you are correct.
     
  12. Mopar okie

    Mopar okie Well-Known Member

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    Still for sale
     
  13. 70SunFun

    70SunFun Well-Known Member

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    Spring is finally here so you might get some action. If you don't sell it in the amount of time that you expect AND you need to sell it, I'd drop the price a little.
     
  14. Mopar okie

    Mopar okie Well-Known Member

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    I'll take $1400.00 plus shipping
     
  15. 70SunFun

    70SunFun Well-Known Member

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    Hopefully you'll get some action on it now with the lower price.
     
    Last edited: Apr 4, 2019
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