RPM vs. highway speed ?

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HT4100 4.1, 4.5, 4.9 Discussion, RPM vs. highway speed ? in Cadillac Engine Technical Discussion; Need some input please. 1994 Deville 4.9 Turning 2700 RPM's at 75 MPH This disturbs me greatly. If you have ...
  1. #1
    amunderdog is online now Cadillac Owners Connoisseur
    Automobile(s): 1994 SLS x 2 ---- 1993 Eldorado Sport ----- 1994 Deville 4.9
    Join Date
    Feb 2010
    Sunbright, TN

    RPM vs. highway speed ?

    Need some input please.
    1994 Deville 4.9
    Turning 2700 RPM's at 75 MPH
    This disturbs me greatly.
    If you have a 4.9 what are you reading on the interstate?

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  3. #2
    arthur jack is offline Cadillac Owners Member
    Automobile(s): 1999 STS registered as new May 01
    Join Date
    Dec 2007
    Devon, England. UK

    Re: RPM vs. highway speed ?

    I dont know, but did you think you should be doing about 81 mph? at 2700

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