Dyno Results: 1997 Mustang GT Comp xe270ah

Discussion in 'Dyno Performance' started by kvoriley, Oct 9, 2014.

  1. kvoriley

    kvoriley Member

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    Finally had my car dyno tuned at Speedy Dyno

    1997 Mustang GT
    PI Engine Swap
    Comp XE270AH cams, beehive springs, etc.
    BBK 78mm TB/Plenum
    KN CAI
    Stock Manifolds
    UPR O/R X w/ Mac Mufflers
    3:73 gears

    Car did 260/270 on a Superflow, which I hear they read about 10% lower than a dynojet?
    Car runs great now, pulls great above 3K. A lot quicker than my old npi shitbox lol.

    what do you guys think I would have ran on a dyno jet?

    Link:
    [video=youtube;y7n4eYdG8T4]https://www.youtube.com/watch?v=y7n4eYdG8T4&list=UUdFy7wBnxgnS3exOGyarVGQ[/video]
     
  2. D3VST8R96GT

    D3VST8R96GT Well-Known Member

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    Long tubes will help so much with the cams
     
  3. kvoriley

    kvoriley Member

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    Yeah I know I wish I had the money at the time to install long tubes. They are my next mod. I thought about installing a tubular k member also but this is my dd and I heard they can be somewhat of a rough ride
     
  4. 1997GT4.6

    1997GT4.6 Well-Known Member

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    Not bad numbers but like dv3 said, long tube headers will help out so much for a cammed car. Car looks great too.
     
  5. Wichers123

    Wichers123 Well-Known Member

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    Just run a upr kmember with perches and it will ride just fine. I run cut factory springs up front and it rides really smooth
     
  6. D3VST8R96GT

    D3VST8R96GT Well-Known Member

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    I would have had that don't when swapping the motor in....

    If you do a k swap do the LTS at the same time
     
  7. kvoriley

    kvoriley Member

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    Yeah I would have too... But I was on a time crunch and was running out of spending funds, so i really didn't have a choice at the time.
    what long tubes are you guys running? I'm wondering how much louder the LTs will be bc I drive this thing everyday, it's already pretty damn loud and the neighbors on campus yell at me in the morning lol
     
  8. 96blak54

    96blak54 Legend

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    Awesome! I bet it sounds tough too!
     
  9. 97NYstanGT

    97NYstanGT Active Member

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    I bet it could've shown better numbers if the back wasn't against the wall like that.


    Sent from my iPhone using Tapatalk
     
  10. kvoriley

    kvoriley Member

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    Why would that have made a difference?
     
  11. 96blak54

    96blak54 Legend

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    Im guessing he thinks the wall was a restriction....?
     
  12. Z06killinsbf

    Z06killinsbf Active Member

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    It looks like it's 5 feet away...

    good numbers, as long as you're happy that's all that matters.
     
  13. 97NYstanGT

    97NYstanGT Active Member

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    It looks closer than 5 feet, more like 2-3 feet, and unless they had a pipe redirecting exhaust it does cause restriction.
    When running a sample in a wind tunnel, for a slow speed 40mph wind tunnel, the exhaust has to be at least 5 feet away from any objects, for accurate results. For a 100 mph + wind tunnels, over 100 feet of clearance is required. Now I understand that mustang exhaust is not a high speed wind tunnel but the exhaust coming out at 6k RPM is pretty damn fast. Or maybe I'm just overestimating.
     
  14. RichV

    RichV Well-Known Member

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    [MENTION=20216]Evilgt[/MENTION]

    There's your answer right there. But those #s are with cams, so a PI swapped SN still does not make the #s a GT40 5.0 with E303.

    He and I had a discussion on a swapped PI SN vs a E303/GT40 5.0. Can only make 270/310tq max for our race class.
     
  15. Evilgt

    Evilgt Member

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    Is that a complete PI swap or PI heads on a NPI short block.

    What if anything was used to tune it?

    kyle
     
  16. Evilgt

    Evilgt Member

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    Dont forget that the 4.6 can run long tube headers.

    7.24 Exhaust
    7.24.1 All cars must use OEM stock exhaust manifolds with the following exceptions:
    1. Early GM 305 and Early Ford 5.0 cars may use shorty style headers
    2. Ford 4.6 2V cars may use long tube headers.
     
  17. dino

    dino Active Member

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    Is SuperFlow the specified dyno for the class rules?

    I'm not quite sure what you are saying otherwise. Are you saying a cammed PI car won't make what that 5.0 setup does? Or that a stock PI long block can't?
     
  18. RichV

    RichV Well-Known Member

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    No, DynoJet with specific settings.

    Kyle and I were discussing dyno #s on a PI top end, NPI bottom end SN versus a 5.0 GT40 top end with a E303. So what I was saying is that a PI top end SN95 makes less power than the 5.0 in that instance. Allowed mods on the 5.0 is GT40 heads/intake and E303 cam, shortys/full exhaust. The 4.6 is PI heads/intake LT headers/full exhaust. No tuning for either, assuming both are healthy running motors.
     
  19. dino

    dino Active Member

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    No tuning allowed? Well ya, that's gonna be a turd.
     
  20. 96blak54

    96blak54 Legend

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    Sensor interpreting devices allowed? Like maf tuners, o2 adjusters?