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Then and Now - Horsepower TV Roush Mustang

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  • Then and Now - Horsepower TV Roush Mustang

    (Gears are turning....non synchromesh mental gears)

    Watching HorsePowerTV this morning, and they are doing a Roush Mustang...
    (Everything is bolt on...amazing)

    http://www.powerblocktv.com/site3/index.php/horsepower-episodes

    When it got to the supercharger setup, and they put it on the dyno...
    It came up with 378HP....out of 4.6 litres (280.7 cubic inches)

    Hmmmmmm.....

    $5899.00 for supercharger kit.
    http://www.summitracing.com/parts/RSP-403310/

    What were the R2, and R3 HP ratings?
    Just curious..
    Jeff
    HTIH (Hope The Info Helps)

    Jeff


    Get your facts first, and then you can distort them as much as you please. Mark Twain



    Note: SDC# 070190 (and earlier...)

  • #2
    Not wanting to rain on your parade, but the heads on the Mustang probably flow at least 50% better than Studebaker heads and combined with all
    the other modern improvements in valve train etc. the Mustang supercharger on the Studebaker probably would not improve the HP output, IMHO
    the $6K price would be better spent elsewhere. IIRC the factory claimed less than 300 HP for the R2.

    Comment


    • #3
      I wasn't contemplating doing this, just commenting on how it currently takes 6 grand to punch a 280cid engine to 378 rear wheel horsepower.
      My question was to look back in comparison to see how much it cost to get to R2, or R3 spec's back in the day.
      HTIH (Hope The Info Helps)

      Jeff


      Get your facts first, and then you can distort them as much as you please. Mark Twain



      Note: SDC# 070190 (and earlier...)

      Comment


      • #4
        I believe BHP for an R2 is 287 and for a R3 is 335.
        Jim Barker
        '70' Avanti II

        Comment


        • #5
          In my humble opinion comparing yesteryears horsepower ratings verses todays ratings is kind of like comparing apples and oranges. The 289 HP of the R-2 is probably closer to 250 in todays world. So the 378 HP rating of the Roush Mustang would likely be over 400 in yesteryears ratings.

          By the way Jeff how much boost were they getting?
          Last edited by 41 Frank; 08-22-2010, 07:42 PM. Reason: spelling
          Frank van Doorn
          Omaha, Ne.
          1962 GT Hawk 289 4 speed
          1941 Champion streetrod, R-2 Powered, GM 200-4R trans.
          1952 V-8 232 Commander State "Starliner" hardtop OD

          Comment


          • #6
            Yes different Measuring standards, the old standard was gross horsepower rated at the flywheel. Today they are net measurements including accessory drag. I believe the Roush measurement was probably at the rear wheels as well.
            Pat Dilling
            Olivehurst, CA
            Custom '53 Starlight aka STU COOL


            LS1 Engine Swap Journal: http://www.hotrodders.com/forum/jour...ournalid=33611

            Comment


            • #7
              Maybe Bob Palma knows the specifics. Wasn't the Plain Brown Wrapper or the Stude Tomato tested with a "at the rear wheels" dyno? I was thinking that the numbers were very surprising!

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