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12/1 vs 9.5/1 19 gt350 makes 494whp!

Discussion in '2020+ Shelby GT500 Mustang' started by tt335ci03cobra, Aug 20, 2019.

  1. gimmie11s

    gimmie11s Handlebar mustaches... PSSHHH! Established Member Established Member

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    It's within 1 mph of my trap speed and whp dyno also... hmmmm.
     
  2. LostM

    LostM Well-Known Member Established Member

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    I have pics of a good portion of the dyno sheet, as well as the car there. My source wont tell me exactly where or how they got it, nor allow me to capitalize on it.
    But the source is very trustworthy, but could be playing me..

    He did say it was 98* in there, as well as there is no 1:1 gear and i dont know what gear it was ran in

    I speculated 680rwhp, and still think thats true, in better/normal/average conditions
     
  3. gimmie11s

    gimmie11s Handlebar mustaches... PSSHHH! Established Member Established Member

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    Depends on who's driving...
     
  4. gimmie11s

    gimmie11s Handlebar mustaches... PSSHHH! Established Member Established Member

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    Very well could be.

    I thought you said you were there, or this is 2nd and info?
     
  5. LostM

    LostM Well-Known Member Established Member

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    "Saw" as in i was sent the pics early this morning
     
  6. ON D BIT

    ON D BIT Finish First Established Member

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    I’m not sure why? Amg auto we’re losing about 18% just a few years ago.
    475hp GT3 lost 16%
    Demon lost 11% in both 808 and 840 forms.
    All these % assumes they are right on claimed crank power numbers.
    I believe there will be a few 64x to 67x whp numbers from factory depending on dyno.
     
  7. 4VFTW

    4VFTW Well-Known Member Established Member

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    I dont think it's impossible, though improbable without amazing track prep and certainly not happening on unprepped asphalt.
     
  8. tt335ci03cobra

    tt335ci03cobra Well-Known Member Established Member

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    I’m still expecting 700’s.
     
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  9. gimmie11s

    gimmie11s Handlebar mustaches... PSSHHH! Established Member Established Member

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    Gotcha.. i mis read then.
     
  10. blk02edge

    blk02edge Well-Known Member Established Member

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    Is there some kind of standard for chassis dyno that will give proper 100% accurate readings? I have never seen much consistency to them.
     
  11. ON D BIT

    ON D BIT Finish First Established Member

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    No.
    Every pull will be different.
    Every dyno manufacturer will be different.
    Gears is it 1:1 will make it different.
    Heat will make it different.
    Humidity will make it different.
     
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  12. tt335ci03cobra

    tt335ci03cobra Well-Known Member Established Member

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    And most importantly sae ratings vary. Some assume 77°, others correct to 60°, others revert to gross hp, others assume net or gross hp, etc etc.

    Loading and unloading the load cells matters, etc.
     
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  13. SlowShelby_TX

    SlowShelby_TX New Member Established Member

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    This is part of why I detest this type of discussion. SAE correction factors mitigate this to some degree, but even then it will vary with altitude and engine aspiration methods. A dyno is just a tool at the end of the day. It is best to use the same one and compare results from similar weather, but that is not how the internet works. Even SAE factors don't take into account adiabatic efficiency of compressors.

    I certainly mean no disrespect to the OP. I just think people are a little nutty for reading into the numbers too much.

    As far as the transmission loss discussion, the GT350 transmission would never be behind the GT500 mill. The DCT is probably more efficient than the manual that they would have had to use. Just spitballing here ;)
     
    Last edited: Aug 20, 2019
  14. tt335ci03cobra

    tt335ci03cobra Well-Known Member Established Member

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    None taken, I honestly think ford found a little extra power. The 2019 gt350’s are trapping 2-3mph higher and hitting 60 a quarter second faster.

    My point with the thread is that the 760hp crank number could well be like the 390hp number in the 03 cobra’s.
     
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  15. Gabed1972

    Gabed1972 Member Established Member

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    What were stock 13-14 GT500 putting up on the Dyno?
     
  16. 4VFTW

    4VFTW Well-Known Member Established Member

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    580-590whp seemed common
     
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  17. gimmie11s

    gimmie11s Handlebar mustaches... PSSHHH! Established Member Established Member

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    580-590... heros made right at 600.


    Sent from my iPhone using the svtperformance.com mobile app
     
  18. 1 Alibi 2

    1 Alibi 2 If not today, when ?????? Established Member

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    I remember waiting on the 14 I ordered, ( 112 days ), and seeing dyno results posted on this site, 590, 603, 610, 614.
    Couldn't wait to get my baseline,.
    ..............which turned out to be 585...... ( DynoJet, J1349 corrections. )
    My tuner's dyno isn't as generous as some !!
     
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  19. Cman01

    Cman01 hello Established Member

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    Even with track prep and wicked DA, perfect weather conditons etc etc. on the factory tires (base car tire or CF Cup 2's) it's not hooking 1.6 60's. A drag slick or DR's...………...maybe and it's a big maybe. That mag ride suspension is not set up for drag racing I don't care what Ford says about the base car being the "drag oriented" car. You need a different suspension set up for drag racing and a proper tire at the back to see your 1.6X 60 ft. times, if it can pull it off carrying all the heft.
     
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  20. LostM

    LostM Well-Known Member Established Member

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    It aint cutting no 1.6 on a street tire. 1.7 lowest and still 99% unlikely. 1.8 is the best I think one can hope for street tires.

    1.6 should be no problem with a radial though
     

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