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Thread: Help with .08 corvette 3-4 shift and downshift from 6

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    Help with .08 corvette 3-4 shift and downshift from 6

    Trying to get the 3-4 shift to be @ 6400, but it's shifting @ 6200. Any tips on how to increase the shift point? I've raised shift rpm to 6400. Should I also increase shift speed?

    Also, what's the trick to getting the downshift from 6 at highway speeds to be quick and into the correct gear. Seems to take a bit and tries to find the right gear.
    2002 EB C5Z06. ECS Novi, Alky control meth & headers, 633 rwhp

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    Tuner in Training 08RED2500HD's Avatar
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    Quote Originally Posted by turboffr View Post
    Trying to get the 3-4 shift to be @ 6400, but it's shifting @ 6200. Any tips on how to increase the shift point? I've raised shift rpm to 6400. Should I also increase shift speed?

    Also, what's the trick to getting the downshift from 6 at highway speeds to be quick and into the correct gear. Seems to take a bit and tries to find the right gear.
    I haven't looked at your tune, if the only thing you did to try to raise shift points was change the RPM then yes you have to raise shift speeds.

    Try lowering downshift times to quicken the shifts.
    2008 Silverado 2500HD
    357 rwhp 382 rwtrq tuned by me
    MODs: CAI, cut out, cat delete.
    (New Mods: Ported TB, pacesetter Long tubes, and off road Y= redynoing soon )

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    I bumped the factory shift speed from 99 to 100 and shift rpm from 6300 to 6400, but still shifts around 6100-6200. At that rpm the mph is around 115-116.
    2002 EB C5Z06. ECS Novi, Alky control meth & headers, 633 rwhp

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    ok, I increased the shift speed to 113 and shift rpm to 6400. It's seeing a peak of just over 6300 now, which is perfect. so simple
    2002 EB C5Z06. ECS Novi, Alky control meth & headers, 633 rwhp

  5. #5
    Tuner in Training 08RED2500HD's Avatar
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    Quote Originally Posted by turboffr View Post
    ok, I increased the shift speed to 113 and shift rpm to 6400. It's seeing a peak of just over 6300 now, which is perfect. so simple
    It really is that simple. Lol
    2008 Silverado 2500HD
    357 rwhp 382 rwtrq tuned by me
    MODs: CAI, cut out, cat delete.
    (New Mods: Ported TB, pacesetter Long tubes, and off road Y= redynoing soon )