Quote:
Originally Posted by Knightrider966
....Is it possible that my 300D was made for a 85 MPH speedo instead of a 120 MPH speedo?....
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Your 1983 300d should come with 120 MPH speedometer. Look on the back of the speedo for a white tag with 3 sets of #s with some of these / / flanking the middle number this is the ratio. (not sure what all this means but I learned this from mbtechman, he states the numbers have to match for it to work) My '83s number is 99/4/52 and my '84s numbers are 99/4/56 they don't jive when I test it. My guess you have a later model speedo (you can check for the date stamped on the back or your transmission is not set up right after the swap.