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Thread: Need Help IDing Transmission Numbers

  1. 02-14-2010, 09:53 AM #1
    t6dpilot
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    Need Help IDing Transmission Numbers

    Hey guys, I need help figuring out what transmission is in my hotrod. Dave C. could not find this in his database. The fellow that built the case told me it was from a 912, but beyond that I don't know what it is.

    Case casting is 901.301.101.0R
    Number 902/05
    Serial # 5191022

    Can anyone help me out with this? Thanks.
    Scott H.
    1969 Coupe LtWt
    1973.5 911T
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  2. 02-14-2010, 10:08 AM #2
    preS
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    I don't have the book at hand but do believe that is a 69 912 5 speed.

    1 = 5 spd
    9 = 69
    1022 = serial

    BTW it's a mag case?

    Richard
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  3. 02-14-2010, 12:01 PM #3
    t6dpilot
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    Thank you Richard. It is for a 69, so the fact that the transmission is a 69 makes sense. I am not sure whether it is Al or mag. The 902/05 number and serial # were stamped into the very bottom of the transmission case (i.e. facing the floor).
    Scott H.
    1969 Coupe LtWt
    1973.5 911T
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  4. 02-14-2010, 02:35 PM #4
    davep
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    902/05
    AL case 1969 production 5 speed
    serial range 5190001 to 5191141
    standard A F M S X ratios and 7:31 R&P
    A 11:34 F 18:34 M 22:29 S 25:26 X 28:24
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  5. 02-15-2010, 04:27 AM #5
    t6dpilot
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    Thank you davep! I will say though that the gear ratios are probably not AFMSX. Dave C. calculated for me (based on a photo of the dash) that my 5th is most likely a ZA. Be interesting to know what the other gears are...
    Scott H.
    1969 Coupe LtWt
    1973.5 911T
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  6. 02-15-2010, 10:56 AM #6
    davep
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    Yeah, the trans serial number only tells what was in the box when the factory made it. Once delivered, all bets are off.
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