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Guess my MPG

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  • Guess my MPG

    I'm taking the malibu from waco to burleson tonight. By far the farthest it's ever gone. This motor has been solid for two years, so I finally have the confidence to leave the nest a little longer.

    I'm going to use my android to GPS track my mileage. I'm going to fill up, drive the +/- 70 miles, 100% freeway, exit and fill up so this will be a 100% HWY MPG.

    So, the question is: Predict my HWY MPG.

    3200LBS with me (full tank too) in the car via a CAT scale.
    -I'll have a buddy with me, and a 60lb tool box in the truck

    Motor
    406
    Trickflow heads
    Comp 280 (maybe 292) Magnum cam
    Holley HP carb - Mechanical secondaries

    4 speed (1:1 final drive)
    3.89 rear gear

    I'll maintain 3,250-3,500 RPMS for the entire trip, which is about 65MPH.
    I have an Innovate LM-1 that reads 13.7 A/F ratio while cruising.

    LET THE GUESSING BEGIN
    DE OPPRESSO LIBER

  • #2
    12.5
    2012 SRT8 Challenger 392 Hemi-6 speed
    Bright Silver Metallic w/ Black Stripes
    Leg Maker Inc. 4"Carbon Fiber CAI
    Speedlogix Catch Can
    Resonator Delete

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    • #3
      14.8
      Can't beat them, Join their NEW message board !!

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      • #4
        10.3

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        • #5
          12.1, which is about what my Cougar was getting on that kind of trip.

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          • #6
            somewhere in the 14s depending on how you accelerate up the ramp
            Originally posted by soap
            i can fix anything from a broken tractor to an aching pussy!!!

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            • #7
              14.2
              Detailing is an Obsession!!

              1996 MYSTIC Cobra #405 of 2000

              Fox Coupe "Calypso Killer"

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              • #8
                I'm interested in seeing real world results from this. I'll have a similar combo with 1:1 in the '66. I'll guess 12.5

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                • #9
                  I've been thinking around 14 as well. I'll post the results between 8-9pm this evening. If nothing is posted by then, the car broke.
                  DE OPPRESSO LIBER

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                  • #10
                    Originally posted by HarrisonTX View Post
                    I've been thinking around 14 as well. I'll post the results between 8-9pm this evening. If nothing is posted by then, the car broke.
                    Beer for the winner?

                    2012 SRT8 Challenger 392 Hemi-6 speed
                    Bright Silver Metallic w/ Black Stripes
                    Leg Maker Inc. 4"Carbon Fiber CAI
                    Speedlogix Catch Can
                    Resonator Delete

                    Comment


                    • #11
                      3200 rpm? 12 or less, but it will be fun!

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                      • #12
                        Originally posted by Vertnut View Post
                        3200 rpm? 12 or less, but it will be fun!
                        Yep. around 3,250 with no radio or AC... I'm gonna own that fucking right lane.
                        DE OPPRESSO LIBER

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                        • #13
                          5.85
                          Slow moving projects
                          1964 C10 350/700r4
                          1992 LX 5.0

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                          • #14
                            21.3
                            1993 Vibrant Red Cobra #1741.

                            If you want more inches - Stroke it!!!

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                            • #15
                              12.1

                              Winner
                              Last edited by BradM; 09-28-2012, 07:52 PM.

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