1. ddartdude

    ddartdude Well-Known Member

    Messages:
    646
    Likes Received:
    270
    Joined:
    Jan 1, 2007
    Location:
    Port St. Lucie, Florida
    Local Time:
    3:17 PM
    273 - many years ago, 10 or so, some entered a 273 in the Engine Masters contest and they did an article on it. It only made a few test passes and didn't compete. Have you ever run across this article or was I dreaming it?
     
  2. 273

    273 Well-Known Member

    Messages:
    3,750
    Likes Received:
    1501
    Joined:
    May 14, 2012
    Location:
    Ontario
    Local Time:
    4:17 PM
    Ya it made like 450 hp with ported EQ heads, he’s a member here I forgot who, he posted the dyno results before.
     
  3. toolmanmike

    toolmanmike Moderator Staff Member FABO Gold Member

    Messages:
    61,310
    Likes Received:
    49830
    Joined:
    Jan 18, 2006
    Location:
    Iowa
    Local Time:
    3:17 PM
    Didn't they have a head gasket problem?
     
  4. 273

    273 Well-Known Member

    Messages:
    3,750
    Likes Received:
    1501
    Joined:
    May 14, 2012
    Location:
    Ontario
    Local Time:
    4:17 PM
    That or a crack in the exhaust port if I remember right
     
    • Like Like x 1
    • 273

      273 Well-Known Member

      Messages:
      3,750
      Likes Received:
      1501
      Joined:
      May 14, 2012
      Location:
      Ontario
      Local Time:
      4:17 PM
    • 273

      273 Well-Known Member

      Messages:
      3,750
      Likes Received:
      1501
      Joined:
      May 14, 2012
      Location:
      Ontario
      Local Time:
      4:17 PM
      I pretty sure this is the engine.

      23ac31a5-f72a-4080-a9d2-7715b692f5f3-jpeg.jpg

      2b4ce9fb-acb3-4e01-b0f1-4fa9f5ab6106-jpeg.jpg
       
      Last edited: Aug 19, 2020
      • Thanks! Thanks! x 1
      • 273

        273 Well-Known Member

        Messages:
        3,750
        Likes Received:
        1501
        Joined:
        May 14, 2012
        Location:
        Ontario
        Local Time:
        4:17 PM
        2010-mopar-nats-and-chenoweth-contest-engine-037-jpg.jpg

         
        • Thanks! Thanks! x 1
        • Hemirunner

          Hemirunner Well-Known Member

          Messages:
          389
          Likes Received:
          267
          Joined:
          Jul 20, 2011
          Location:
          Down South
          Local Time:
          3:17 PM
          • Like Like x 1
          • Thanks! Thanks! x 1
          • IQ52

            IQ52 Well-Known Member

            Messages:
            2,710
            Likes Received:
            2458
            Joined:
            Jul 30, 2011
            Location:
            Idaho
            Local Time:
            2:17 PM
            Yep, you did a good job. I had to make a run and fetch the second set of sleeves while you cut out the first set. I remember the day!
             
          • ddartdude

            ddartdude Well-Known Member

            Messages:
            646
            Likes Received:
            270
            Joined:
            Jan 1, 2007
            Location:
            Port St. Lucie, Florida
            Local Time:
            3:17 PM
            Off hand, do you remember what magazine (issue) the engine was in? I have it somewhere but not sure where to start looking. Thanks
             
          • kowalski440

            kowalski440 Well-Known Member

            Messages:
            252
            Likes Received:
            142
            Joined:
            Dec 20, 2014
            Location:
            Milan In
            Local Time:
            4:17 PM
            What was the thinking behind using shorter rods in the 273/292?
             
          • 273

            273 Well-Known Member

            Messages:
            3,750
            Likes Received:
            1501
            Joined:
            May 14, 2012
            Location:
            Ontario
            Local Time:
            4:17 PM
          • Hemirunner

            Hemirunner Well-Known Member

            Messages:
            389
            Likes Received:
            267
            Joined:
            Jul 20, 2011
            Location:
            Down South
            Local Time:
            3:17 PM
            Shorter rods? These were 5.4L Ford rods. Longer with direct pin oilers
             
          • Hemirunner

            Hemirunner Well-Known Member

            Messages:
            389
            Likes Received:
            267
            Joined:
            Jul 20, 2011
            Location:
            Down South
            Local Time:
            3:17 PM
            Shorter rods? These were 5.4L Ford rods. Longer with direct pin oilers
             
          • mopowers

            mopowers Well-Known Member

            Messages:
            5,917
            Likes Received:
            3081
            Joined:
            Feb 15, 2006
            Location:
            West Sacramento, CA
            Local Time:
            1:17 PM
            Have any of these magazine builds matched the dyno numbers at the track? That'd be a fun comparison to see.
             
          • Hemirunner

            Hemirunner Well-Known Member

            Messages:
            389
            Likes Received:
            267
            Joined:
            Jul 20, 2011
            Location:
            Down South
            Local Time:
            3:17 PM
            I suppose you could compare mph to weight but you’d introduce way more variables unless you used the same car for all tests. We all used the same dyno for these tests which was a much better comparison of combos. We were within 2-3% of the dyno we normally used with our big block builds vs. Comp Cams dyno so I’d consider it very close.
             
          • kowalski440

            kowalski440 Well-Known Member

            Messages:
            252
            Likes Received:
            142
            Joined:
            Dec 20, 2014
            Location:
            Milan In
            Local Time:
            4:17 PM
            I misread it as 5.4 INCH Ford rods. My bad!
             
          • 273

            273 Well-Known Member

            Messages:
            3,750
            Likes Received:
            1501
            Joined:
            May 14, 2012
            Location:
            Ontario
            Local Time:
            4:17 PM
            Last edited: Oct 11, 2020
            • Like Like x 2
            • yellow rose

              yellow rose Overnight Sensation FABO Gold Member

              Messages:
              28,619
              Likes Received:
              25208
              Joined:
              Jun 19, 2015
              Location:
              Central Washington
              Local Time:
              1:17 PM
              • Like Like x 1
              • 273

                273 Well-Known Member

                Messages:
                3,750
                Likes Received:
                1501
                Joined:
                May 14, 2012
                Location:
                Ontario
                Local Time:
                4:17 PM
                True but really what percentage of people would, yes top builders or someone trying to get most out of a combo, but you average guy gonna run something like an xe285hl or equivalent from other companies in their street strip car no matter what make, engine, size or parts on it.
                 
              • Hysteric

                Hysteric Well-Known Member

                Messages:
                508
                Likes Received:
                234
                Joined:
                Dec 31, 2005
                Local Time:
                3:17 PM
                What!!?? They didn't change the timing ...........

                Timing and fuel don't matter it needs more AIR!
                 
              • Hysteric

                Hysteric Well-Known Member

                Messages:
                508
                Likes Received:
                234
                Joined:
                Dec 31, 2005
                Local Time:
                3:17 PM
                Here's an interesting engine: http://wright-here.net/files/articles/phr_1109_sbo/phr_1109_sbo_ocr.pdf

                Unfortunately its not a mopar but fascinating just the same. They made 1.37 HP per cube with only 195 cfm peak flow. They made 2.2 HP per cfm truly remarkable when you think about it.

                "The intake port is way smaller than the original. , think the factory was 152 cc and now it's down to 145 and it's much higher. It's got a small cross section of 1.91square inches]." Final flow numbers ended up around 195 cfm on the intake and 170 on the exhaust. Though not huge peak flow numbers. he claims they were almost at those numbers by .200-inch lift. Just perfect for limited camshaft and rpm range applications."

                And they did it with an Edelbrock carb........:lol:
                 
                • Like Like x 2
                • 273

                  273 Well-Known Member

                  Messages:
                  3,750
                  Likes Received:
                  1501
                  Joined:
                  May 14, 2012
                  Location:
                  Ontario
                  Local Time:
                  4:17 PM
                1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
                  By continuing to use this site, you are consenting to our use of cookies.