Hughes Performance 4l80e

Discussion in 'Transmissions' started by Tongan310, Jan 19, 2018.

  1. Black_cirrus

    Black_cirrus I'm Awesome

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    I drove my burb 95 454/4l80 from MD to ID 2700+ miles with a 24' enclosed trailer at about 8k lbs with no problems but I watched the trans temps and when they started to climb I wouldn't push it. I don't smoke so I mounted the gauge in my ash try.
     
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  2. Tongan310

    Tongan310 Newbie

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    I'm looking at about 16k worth of trailer. Its not going very far (About 35 miles) but doesn't look like I'll be driving it after all. Dealer said they'd deliver it to the storage lot for free. When it comes time to move it. Its gonna be another short trip to an RV park.. (Again 35 mile drive)

    Thanks for the input. I got to go look for a trans temp gauge setup.
     
  3. Sparkysikes

    Sparkysikes Newbie

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    The 3500's run 20k gvwr and realistically closer to 25k on stock 4L80E all the time. And the 3500HD I've seen those hit about 30k many a time. I think you should be considerably lighter. But like everyone says tow slow. Don't push it and it'll last you.
     
  4. Tachyon

    Tachyon Newbie

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    When I swapped in my HT-383e engine and other performance upgrades, I also put in a new, dealer stock 4L80E and it has run flawlessly for years now despite facing much higher than stock HP and Torque numbers and my....<cough>...spirited driving and occasional towing.

    That said, if you are going to buy a new, upgrated transmission, look at the 4L85E and possibly GMPP 4L70E as options.
     
  5. df2x4

    df2x4 Domestics only.

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    Why would he ever consider a 4L70E? Aren't they the same case length as a 60E? At that point he's swapping transfer cases and/or driveshafts to go to a weaker transmission than he already has.
     
  6. Tachyon

    Tachyon Newbie

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    Because it's a drop in for the 4L60E, which everyone thought he was talking about until he clarified which makes both your points just you not missing a chance to be a dick.

    Also, GM themselves recommends the 4L70E for a lot of hot-rodder type applications because it is a modified transmission designed for higher horsepower applications. The 4L70E is lighter and smaller than the 4L80E and has gear ratios that some people find more appealing than the 4L80E. The strength and power handling improvements made to it eliminate all the reasons not to use a 4L60E with the advantages and lighter weight that it may have for some users.

    The 4L70E has a torque rating of 495 lb-ft while the 4L80E is rated to 440 lb-ft.
    The 4L70E has the following gear ratios
    1st: 3.06, 2nd: 1.62, 3rd: 1.00, 4th: 0.70
    The 4L80E has:
    1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.75

    SO I assume even you can grasp that the lower first gear and higher OD gear make the 4L70E a better transmission choice for trucks that want a good crawler low gear and a higher OD gear for decent highway cruising and fuel economy.
     
  7. df2x4

    df2x4 Domestics only.

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    I'm fully aware of the ratio differences. My point still stands. You didn't even read the thread before you replied.
     
  8. Tachyon

    Tachyon Newbie

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    Which is what? You like to hear yourself talk.
     
  9. df2x4

    df2x4 Domestics only.

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    Since you've proven twice now that you lack the cognitive ability to go back a few posts.
     
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  10. Nathaniel2g

    Nathaniel2g Rusty Islander

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    Popcorn anyone?
     
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