Friday, September 10, 2010

PRND21... a variety of gear indicators from the 1950's and 60's















I think it's interesting to find that there were more than a couple ways for an automatic to name the gears. What was the S in PNDSLR? Was O in PRNODL2L1 for overdrive? Must have been. One of these has D2D1 and then L.... and another has DL2L1... what do you suppose the difference is between 2 drive gears and one low, versus one drive gear and 2 low gears?

4 comments:

  1. The "S" stood for second. The PNDSLR arrangement was used on GM Roto Hydramatic transmissions from the early to mid 1960's.

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    1. Thanks! Say, how do you know all this trivia? Australian streetcars by model number?

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  2. When did cars change from PRNDL to prnd21 thank you frank8261634@gmail.com

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    1. when transmissions became 3 speeds and it was used to upsell people from the old 2 speed transmissions. In the 50s, but it depended, of course, on each make and model

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