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Towing capacity

Discussion in 'General Discussion' started by JDopirak, Apr 27, 2020.

  1. JDopirak

    JDopirak Member

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    Yup all the power i gained from heads cam are in useless areas i rarely get to. I thought i did enough research and i actually spoke to customer service at texas speed so i thought i was good to go and would get gains where i actually needed it. I was wrong.
     
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  2. JDopirak

    JDopirak Member

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    Looks like 5,917 so without seats and then add me its around 5,957 race weight.
     
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  3. swathdiver

    swathdiver Full Access Member

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    Good, so that would be 303.26 RWHP.

    Here's the formula: Race Weight x ((Trap Speed x .00426)^3)

    So that was stock with a tune?
     
  4. avalonandl

    avalonandl Full Access Member

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    You can try the 4.10 since you have 3.42 now. Figure out your rpm's at cruise levels.

    I am thinking you should just bore & stroke to about 7 liters....
    But thats me... You could keep the 3.42 gears then.
     
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  5. swathdiver

    swathdiver Full Access Member

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    Stock 20s run about 1680 RPMs at 70 MPH, 3.73s @ 1834 and 4.10s @ 2016 RPMs. How did the old saying go? "There's no replacement for displacement!"
     
  6. JDopirak

    JDopirak Member

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    Im having a 6.0 built so that should help a little.
     
  7. JDopirak

    JDopirak Member

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    Next time i tow ill have the dash cam running or maybe the gopro facing cluster and ill post it on youtube so you can see what im talking about. I do value all of your input ive learned alot. Ive been towing a 5x8 for years with my forester so owning and towing with a huge car trailer like this is one hell of a learning curve. And i learned as soon as i picked it up i went to big for the truck i have lol. But im not buying another truck any time soon so ill take my time and try to set the truck up as best i can to last as long as it can.
     
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  8. Dantheman1540

    Dantheman1540 Full Access Member

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    That 212/218 600/600 cam in a 6.0 with decent compression ratio 9.5-11.0 will pull like a champ down low! If the 5.3 dies and the cam is still good I would not hesitate for a second to put it in the 6.0. With the 1st gear ratio of the 6L80 being 4.56 I would not touch the 3.42 gears until you get the new motor in and see how it does. Also If you have had it tuned in the past and aren't using a 93 octane tune when towing you should. The little bit more spark advance that you can run with 93 will give it a peppier feel off the line.

    Also most Toyotas especially the tundras seem to be geared really low from the factory I think some have come with as low a 4.56 with the towing package. That might be why the 4.6 tundra felt ballsy.
     
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  9. swathdiver

    swathdiver Full Access Member

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    FYI: 4.027
     
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  10. Dantheman1540

    Dantheman1540 Full Access Member

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    Just went back to the google page that I found the 4.56 and for some reason when you google 6L80 gear ratio it brings up the 8L90 ratios first. Guess COVID even messed up google searching. Thanks for the correction :happy160:. My opinion still stands I'd 6.0 before regear.
     
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