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Thread: Shift points and MPH

  1. #1
    Join Date
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    Since I've gotten the 4.10s I shift into 3rd at aroudn 80MPH if I remember correctly.
    When I'm at the track it pisses me off because right before I get to the finish line, it shifts into 3rd which I think robs me of a little time.
    Can I change it(with Edit) so that I stay in second? Or do the 4.10s ruin any chance of that happening? If I went back to 3.73s would that be possible?
    '01 Sierra 4.8 SCSB
    4.10, Eaton posi, Nelson tune, 160 t-stat, K&N Intake, Magnaflow catback, Vig 3200, Transgo+billets, 100 NX wet shot

  2. #2
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    ok, here is or was my dilema, i had 3.42's and was shifting into 3rd right at the line. it seemed as though i was shifting and getting the 2-3 jump right before the line. everyone else says they get that with 3.73's or 4.10's. i had my shift points set at 5900. i changed to 3.73's and are hoping my truck won't do it now. i can't figure out why it did it with 42's, unless pred sucks that bad. sorry for hijacking your thread. just seemed we have the same prob even tho diff gears..
    01 ecsb stepside. best 1/4 14.6 at 92 mph.

  3. #3
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    Chingon.. what are your shifts set at now? I would think with 4.10s, you should be in third well before the traps. But if you are shifting kinda low, I would tring bringing the shift up to 6000 and see if that will get you through. What is your rev limiter set at? You may also want to try to manualy hold it in second to see if you can get through without bouncing the revlimiter.
    2000 Silverado, RCSB, 2wd w/ a few mods.
    Best 1/4 ET: 12.09@111.22 (old 5.3L H/C/N2O setup)
    WRE 370 and Kenne Bell 2.8L installed and breaking trannys.


    2001 Tahoe LT 4wd
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  4. #4
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    Originally posted by BigKID@Dec 26 2003, 09:33 AM
    Chingon.. what are your shifts set at now? I would think with 4.10s, you should be in third well before the traps. But if you are shifting kinda low, I would tring bringing the shift up to 6000 and see if that will get you through. What is your rev limiter set at? You may also want to try to manualy hold it in second to see if you can get through without bouncing the revlimiter.
    I set my 1-2 shift at 6000 and my 2-3 shifts at 5900 or 6000.
    My HPP3 settings are +4 +12 and the last one is at whatever....
    I shift into 3rd at about 80MPH....I finish the 1/4 at around 88MPH...
    Rev limiter set at 6200
    '01 Sierra 4.8 SCSB
    4.10, Eaton posi, Nelson tune, 160 t-stat, K&N Intake, Magnaflow catback, Vig 3200, Transgo+billets, 100 NX wet shot

  5. #5
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    hey chingon i have the 4.10 gear and shift into 3rd at the 1/8 mile trap @74mph, and finish the 1/4 at 89mph so your probly pretty close to me unless your 60' times are killing you? so what size tire do you have on your truck?? your shift points are where i had mine with the hpp3 so look at your 1/8 mile trap speed and that will tell you where you shift into 3rd. and with the 4.10 there is no way to finish the 1/4 unless you use some really big tires lol! later, kevin
    http://i17.photobucket.com/albums/b9...5831PM-2-1.jpg <--- TimeSlip
    RCSB 5.3 N/A 12.31 full boltons,H/C,4.10s,3800 converter. SOLD
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  6. #6
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    If you set your 2-3 shift to 6200, that would probably fix it, but it might be too much.Try what BigKid said.
    2003 Silverado Z71,5.3, 3.73&#39;s, Taylor 10.4 mm wires, K&N FIPK, Borla Cat-Back Exhaust, Stock G80 Locking Differential
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    2004 Supercharged Impala SS, K&N air filter, TB screen removed

  7. #7
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    Yeah with 4.10:1s you will shift out fast...remember that TownCar pic I sent you on the strip I had? That would be 3rd before the 1/8th was over. Had 26" tires too...I think it shifted into 3rd around 70mph. Shift points were around 5800rpms w/ it.
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

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  8. #8
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    So do you think going with 3.73s I would be able to finish the 1/4 at the top of second if I set the shifts as high as possible?
    Or should I go with 3.42s?
    With this Vig3200 I have shit tractino off the line...I figure with the higher gears I&#39;ll have good top end...and the Vig will help with the crappy low end the 3.42 gears give.
    &#39;01 Sierra 4.8 SCSB
    4.10, Eaton posi, Nelson tune, 160 t-stat, K&N Intake, Magnaflow catback, Vig 3200, Transgo+billets, 100 NX wet shot

  9. #9
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    i will let you know after tnight. going to the track. havnt run it with the new gears and stall.
    we will see.

    2010 Camaro 2SS/RS
    2020 GMC Sierra AT4

  10. #10
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    Originally posted by 01Thunder@Jan 9 2004, 06:58 AM
    i will let you know after tnight. going to the track. havnt run it with the new gears and stall.
    we will see.
    Hurry
    Money is burnin a hole in my pocket
    &#39;01 Sierra 4.8 SCSB
    4.10, Eaton posi, Nelson tune, 160 t-stat, K&N Intake, Magnaflow catback, Vig 3200, Transgo+billets, 100 NX wet shot

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