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How much power does a TH400 eat?

Discussion in 'The Garage' started by rockink5, Dec 4, 2002.

  1. rockink5

    rockink5 1/2 ton status

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    To make along story short, I want a bullet proof trans and I am considering a 400. I know they rob alot of power, but exactly how much? I have a th350 that will bolt right up to my T-case that I can build but I want more strength. So really the question is does the strenght of using the 400 out way the power loss, or is strength overrated and just rebuild the th350? /forums/images/graemlins/1zhelp.gifI have a th700 now and after talking to Bowtie Overdrives, I am pretty sure I will not get another.
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    I've heard so many different numbers, I'm going with the average of all those numbers combined and that average would be around 50 HP. /forums/images/graemlins/frown.gif
     
  3. reddog64

    reddog64 1/2 ton status

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    I've been told the same thing as wes... 50 HP... /forums/images/graemlins/confused.gif /forums/images/graemlins/k5.gif
     
  4. VisionxOrb

    VisionxOrb 1/2 ton status

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    A tranny guy I talked to a while ago said the 4l80e took 50 more than the 700. this is pretty similar.
     
  5. POWERMAD

    POWERMAD 1/2 ton status

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    When I built a 355 for my old 78 I scattered the Th350 soon after.
    I had another rig with a TH400 so I swapped that in.
    Ya know I don't ever recall any one that rode with me saying..Holy sh!t what happened it feels like ya lost 50 Hp what did ya do swap in a TH400?
     
  6. Greenblazer-AZ

    Greenblazer-AZ 1/2 ton status

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    My TH 350 ADDS 50 HORSEPOWER!, don't Ya'll wish you had one like mine. /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
     
  7. MNorby

    MNorby 3/4 ton status Premium Member GMOTM Winner

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    After swapping in a th400 from a 700R4 it was very noticeable difference in power.
     
  8. thatK30guy

    thatK30guy 1 ton status Premium Member

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    What fluid do you put in your 350? Hemp fluid? /forums/images/graemlins/shocked.gif /forums/images/graemlins/eek.gif /forums/images/graemlins/1zhelp.gif /forums/images/graemlins/rolleyes.gif
     
  9. reddog64

    reddog64 1/2 ton status

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    /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/thumb.gif
     
  10. BARRAZA

    BARRAZA 1/2 ton status

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    A Turbo 400 does not eat 50 more HP than a turbo 350. You won't notice the difference except on dragstrip timeslips. I have seen tests where it was less than 0.1 seconds on an 11 second car. The difference is that the rotating parts of a turbo 400 are heavier (makes sense, its lots stronger) but the difference in rotating weight is insignificant compared to the weight of the tires most of us roll around on. If you need strength, go with the 400 or 4l80
     
  11. thatK30guy

    thatK30guy 1 ton status Premium Member

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    </font><blockquote><font class="small">In reply to:</font><hr />
    If you need strength, go with the 400 or 4l80


    [/ QUOTE ]

    Or, if you don't want to mess with computers and wiring, etc., get a 475 tranny from a motorhome instead. These are mucho stronger than any 400 tranny since the 475 is simply a 400 but with straight cut planetary gears rather than curved ones the 400 has. /forums/images/graemlins/thumb.gif
     
  12. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Wow....this sounds like it could be cool....So I'm goin from a TH400 to a SM465....Sounds like I'm gonna gain some HP? Or atleast feel like I gained some? Thats frickin cool. /forums/images/graemlins/thumb.gif
     
  13. Greenblazer-AZ

    Greenblazer-AZ 1/2 ton status

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    In reply to: What fluid do you put in your 350? Hemp fluid?
    -----------------------------------------------------------
    How did you know? That was supposed to be a secret.
     
  14. thatK30guy

    thatK30guy 1 ton status Premium Member

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    /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/thumb.gif
     

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