411 compared to 373 Gears

Discussion in '1973-1987' started by 84inArk, Dec 16, 2004.

  1. 84inArk

    84inArk Guest

    440 H.P. 383 Flat Top Stroker w/650 Speed Demon Carb, Polished Air Gap Manifold & Vortec Heads

    Anyone know what the RPM would be w/ 411 gears and a 700R4 tranny w/ over drive @ 75 MPH be??
    Opposed to a 373 Ratio @ the same speed.

    Tire size is 15 in.
     
    84inArk, Dec 16, 2004
    #1
  2. nerfherder78

    nerfherder78 Member

    Joined:
    Aug 15, 2003
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    Location:
    Fairfield, CA
    The difference should only be about 3 or 4 hundred rpm higher with 4.11's with stock tires.

    And by your tire size did you mean the outer diameter of the tire is 15"? (You'd be about red line at 75 mph) Or did you mean the rim?
     
    nerfherder78, Dec 17, 2004
    #2
  3. 84inArk

    84inArk Guest

    [updated:LAST EDITED ON Dec-17-04 AT 10:26 AM (CST)]
    Tire size is 275/60/15
     
    84inArk, Dec 17, 2004
    #3
  4. HiYnBlueC10

    HiYnBlueC10 Member

    Joined:
    Jan 31, 2005
    Messages:
    3
    3:73 @ 75 mph = 2,270 rpm
    4:11 @ 75 mph = 2,501 rpm

    You can find a calculator for this on Bowtie Overdrives.

    Just enter your tire size , transmission type, etc... and it will calculate it for you.
     
    HiYnBlueC10, Feb 2, 2005
    #4

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