Chassis-dyno time

Discussion in 'Small Block Mopar Engine' started by BigBlockMopar, Sep 14, 2018.

  1. BigBlockMopar

    BigBlockMopar BigBlockMember

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    Had my Dart on the chassis-dyno again recently to find out what the engine-swap from 318 to 360ci netted me.

    In short, it was 234 RWhp @ 4700rpm and about 295 ft/lbs @ 3550rpm.
    About 64hp more than the previous 318 engine.

    The 360ci engine also runs on LPG Propane fuel and has an A518 and an 8-3/4" rear axle behind it.
    The LPG fuelsystem line and/or lockoff-valves started to act as a restriction because the AFR-readings started going leaner above 3800 rpm.

    More info posted on my site: Dodge Dart – DynoDay #4


    Combined video of all the runs with dyno-charts to go along (Sound is way better with headphones or good remote PC- speakerset);
     
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    • AJ/FormS

      AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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      Very sweet sound
      Nice torque line. 1973DodgeDart-Dynorun33.jpg
       
      Last edited: Sep 14, 2018
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      • BigBlockMopar

        BigBlockMopar BigBlockMember

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        Even though the runs start with the throttle pretty much at WOT and loaded against the counterforce of the dyno, the dyno-operator still had to feather very slightly into the run to prevent transmission kick-down.
        At around 2600-2700 is when he felt confident to go to 'full-WOT'. Could be seen in the torque-line as it curves 'up' slightly more.
        I already had loosened-up the linkage quite a bit but didn't want to drop the trans oil pressure too much in situations like these.
        Runs were made in 2nd gear.
         
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