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shift points

Discussion in 'SVT Shelby GT500' started by acobra03, Dec 27, 2010.

  1. acobra03

    acobra03 New Member Established Member

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    On a stock 09 gt500, when running the 1/4 what rpms are you guys shifting? Do you run it to redline in the first 3 gears or short shift?
     
  2. BigDan

    BigDan Active Member Established Member

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    Our cars make peak power at redline so shift there or above it if you have a tuner. Your ET look's good but you MPH seems low, is that due to short shifting?
     
  3. Robertt305

    Robertt305 Devil Dog Established Member

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    Shouldn't the mph be 115-116?

    Try shifting at 6200, it should bring up mph
     
  4. me32

    me32 BEASTLY SHELBY GT500 TVS Moderator

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    +1, an if its tune shift at 6300 to 6500
     
  5. Robertt305

    Robertt305 Devil Dog Established Member

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    6200 If unported and only with a upper pulley or stock

    6500 if upper and lower or ported

    Upgraded blower then it's on like donkey kong lol
     
  6. Islandcat

    Islandcat Active Member Established Member

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    i was trapping about the same mph when i was stock. I was shifting into fourth though. I started leaving it in 3rd and i started trapping 112 to 115. Keep it in third all the way through the traps even if it is hitting the limiter.
     
  7. jsarkis

    jsarkis New Member Established Member

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    Most likely you have to short shift 1st-2nd if your car is stock or you'll just spin. Try 5500 at the first shift and change up or down by 100 rpm or so until your hooking going into second. Redline after that. It also will depend on the track conditions, weather etc.
     
  8. acobra03

    acobra03 New Member Established Member

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    I shifted at 5900 in all gears and went thru the traps in 4th. I was thinking the same thing about my trap speed being low which is the reason why I asked the question. Someone else posted a response saying they run the 1/4 finishing in 3rd. Is that what everyone is doing?

    I
     
  9. acobra03

    acobra03 New Member Established Member

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    you live dangerously....banging the limiter thru the trap?
     
  10. acobra03

    acobra03 New Member Established Member

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    make sense, thxs. The time I have posted was with me going sideways thru most of second gear.
     
  11. VNMOUS1

    VNMOUS1 Well-Known Member Established Member

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    Buy a set of gears that lets you maximize your rpm/power. Plain and simple.

    I hit the line at 6300-6400 in 4th with 4.10s and 28" tires. 129-132 mph. Factory Eaton.


    bj
     
  12. acobra03

    acobra03 New Member Established Member

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    Hey BJ, that is a smokin' time for a factory eaton. Nice job. I see you post on this forum and another GT500 site as well. You blasted me on the other site after I mistakening posted a smilie with the wrong intention. It was actually funny. I thougth I was giving a thumbs up and actually gave someone the bird. Fun times...lol
     
  13. TaraFirma

    TaraFirma Well-Known Member Established Member

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    6000-6200ish very liitle lift
     
  14. acobra03

    acobra03 New Member Established Member

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    Exactly, never lifted on my 5900 rpm shifts.
     
  15. VNMOUS1

    VNMOUS1 Well-Known Member Established Member

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    Trust me, you weren't the first or the last. :beer:

    That "thumbs up" smiley has caught a number of people.

    Seriously though.... do what you need to in terms of gears and tire size that allows you to hit the peak power. If you've dyno'd it you can see. If not, include that in your list of mods and do some driving and logging of data.


    bj
     
  16. stkjock

    stkjock Corn Powered 900 HP! Established Member

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