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Thread: 73S - 4 speed or 5 speed?

  1. 07-21-2013, 01:51 AM #1
    mac73s
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    73S - 4 speed or 5 speed?

    Is there a way to determine from the transmission case and or serial number if it is a 4 or 5 speed? Fortunately the COA I received from Porsche yesterday confirms all of my numbers match, but the options listing did not include mention of the optional 5-speed where they seem to have the other options correct. Did the 5-speed become standard at some build point? (car was purchased apart, but the shift knob does have the 5-speed pattern...just looking to under stand the lack of mention on the COA option list and if there is an external way to determine). Thank you!
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  2. 07-21-2013, 03:17 AM #2
    HughH
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    You can tell if the number has not been ground off ( like so many due to where it is stamped).
    It is a 7 number serial number. The first will be a 7 for 6 cylinder. The second number will tell you if a 4 or 5 speed. The third will be a 3 for 1973 and the last 4 the sequential numbers
    If the second number is a 1, 3, 7, or 8 it will be a 5 speed. If it is a 2 it will be a 4 speed. If it is a 4 or 6 it is a sporto.
    Hugh Hodges
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  3. 07-21-2013, 04:47 PM #3
    mac73s
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    The transmission number provided by the CoA is 338182. Can you help guide me where this number is stamped on the case?? Thanks!
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  4. 07-22-2013, 04:39 AM #4
    HughH
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    The COA often leaves out the first number (7) as all the 6 cylinder cars start with that. So 3 3 are he second and third numbers on the box. As mentioned above the 3 is a five speed and the second 3 for 1973.
    The number is stamped on the lowest part on the case when installed near the oil plug. I will post a photo of mine shortly. However as it is on a low spot it is easily ground off over time.
    Hugh Hodges
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  5. 07-22-2013, 04:42 AM #5
    mac73s
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    Hugh - thank you again - most helpful. I have the trans sitting on a dolly so that explains why I could not find the number...will flip it on its side this evening and take a look!


    Quote Originally Posted by HughH View Post
    The COA often leaves out the first number (7) as all the 6 cylinder cars start with that. So 3 3 are he second and third numbers on the box. As mentioned above the 3 is a five speed and the second 3 for 1973.
    The number is stamped on the lowest part on the case when installed near the oil plug. I will post a photo of mine shortly. However as it is on a low spot it is easily ground off over time.
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  6. 07-22-2013, 04:47 AM #6
    HughH
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    here you go....given it is resting on that part you are probably contributing to grinding it off not a clever place to put it
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    Hugh Hodges
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