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What speeds do your 700r4 transmissions shift at?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by jbissette, Nov 27, 2001.

  1. jbissette

    jbissette 1/2 ton status

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    I was just curious what speed your 700r4 transmissions shift at and with how much throttle?

    88 Chevy K1500, 350 TBI, TH700R4, 3" body lift, 33x12.50x15 Tires
     
  2. Blue85

    Blue85 Troll Premium Member

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    There's no simple answer to that. Do you mean at WOT? If so, all of the shifts should be up by 4500rpm. The vehicle speed that correlates to depends on gear ratios and tire size.

    You should think of transmission shift points more in terms of engine rpm than mph, since the job of the tranny is essentially to keep the engine in it's powerband.

    <font color=green>Oh man, 4:10's are sure better than 3.08's!</font color=green>
     
  3. jbissette

    jbissette 1/2 ton status

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    I was just wondering because at light throttle my truck shifts between 15-20 mph into second and the into third at about 25 mph. Does this sound normal, I am asking because the transmission was just rebuild and I can't remember where exactly it used to shift. My WOT shifts are somewhere are 4000 rpm.

    88 Chevy K1500, 350 TBI, TH700R4, 3" body lift, 33x12.50x15 Tires
     
  4. Blue85

    Blue85 Troll Premium Member

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    It would probably be a good idea to reset the TV cable position. You basically push it in as far as it will go and then open the throttle once all the way (engine off!) and it sort of sets itself because the Throttle valve mechanism bottoms out inside the transmission. So when you're done, WOT corresponds to maximum TV position.

    I'm not saying that this is right for all trucks, but I usually set mine back one more click (tighter) because that seems to make it all work better. After all, if it is too bad, it is just going to readjust from there after hitting full throttle once. The worst thing is if it's pulled out too far. That lets you hammer the torque through the clutches while they shift slowly due to low TV pressure. That is what burns out the tranny.

    <font color=green>Oh man, 4:10's are sure better than 3.08's!</font color=green>
     
  5. hammer

    hammer 1/2 ton status

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    2.73 gears 32" tires normal driving 35 mph 1-2, 55 mph 2-3, 3-4(overdrive) never. It's like 70 something but I don't drive it that fast to weird still with the lift and going from a Z28 camaro to a truck
     
  6. jbissette

    jbissette 1/2 ton status

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    Some more examples like hammer's please

    88 Chevy K1500, 350 TBI, TH700R4, 3" body lift, 33x12.50x15 Tires
     
  7. 3.08 gears, 31" tires, 20 mph 1st-2nd, 35mph 2nd-drive, never use overdrive (damn 3.08 gears! LOL)

    American by birth, Marine by the grace of God
     

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