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  1. T

    4l80e conversion in 1985 suburban. What parts do I need?

    I found this and went with it instead: https://www.ebay.com/itm/223572746538?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=n6UkPzmUSRy&sssrc=4429486&ssuid=fIuQPn2LQ72&var=&widget_ver=artemis&media=COPY
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    4l80e conversion in 1985 suburban. What parts do I need?

    My mechanical cluster is in mint condition and I like the charm of the old mechanical dash light glow over modern gauges. I found this speed box gps converter that might do the trick. https://www.summitracing.com/parts/SDU-A-369
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    4l80e conversion in 1985 suburban. What parts do I need?

    Howdy all! We are building a 4l80e for the suburban and I have a sniper harness and controller coming for it to lip into our sniper II on the 461. I have two issues. I need to keep the mechanical Speedo. What does everyone use for this? I see Dakota Digital makes one but I’m not sure how the...
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    489ci tow build...

    Amended for your pleasure
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    489ci tow build...

    We tow a 9-10k lb pound 33 foot travel trailer with our 85 c20 suburban 461 cubic inch and turbo 400:
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    85 suburban c20 PTINA

    Withdrawn.
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    Suburban tire thread (help needed)

    I had no frame of reference but now I do. Thanks again for your recs
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    Suburban tire thread (help needed)

    I needed em. Even without it, these tires make this truck drive so much better it’s not even funny.
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    Suburban tire thread (help needed)

    Went with Nittos, they are great
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    Suburban tire thread (help needed)

    If I was 4wd yes. I’m lowered 2 inches and need to pull a trailer lol
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    Suburban tire thread (help needed)

    Howdy gents, Tomorrow I put some new tires on Tina our C20 454 2wd suburban. I’m leaning towards 2 options (getting rid of the 113 flexy pirellis on it). 1. Nitto 420 staggered setup -Rear 305-40-20 F Ply 122 load 3307lbs per tire (80 psi max) - Front 275-55-20 XL 117 load 2833 lbs per tire...
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    In Mr They might be alright. Looked at them today.
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Thanks. I was trying to get the look of these tires while getting at least 10 or 12 ply load ratings on the rear axle. The tires pictured above are too wide for the front 305-50-20 but will work with the rear (and look badass). But I will need to get then 275-50-20 for the front in the same tire...
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    I test fit some 12 ply tires today. What are y’all’s thoughts on 12 ply rear tires and xl front? Thinking of a staggered fitment for these tires for the hot rod farm truck look lol:
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Thanks. The other i encountered was that 3 out of 4 tows have been in 20-40 mph winds. I know that has a lot to do with it as well.
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    With the shackle drop on the rear springs, this rear end squats like crazy with the trailer attached. Without the airbags aired up, the tongue weight drops 100 pounds. Once the bags are aired north of 50 psi and the weight distribution hitch is setup, it’s displaying 3k worth of weight tension...
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Do you think a rear sway bar does any good in my setup in addition to the e rated tires?
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    The front suspension is all new moog suspension oem replacement upper and lower with all new tie rod ends and ball joints. The coils are western chassis c30 2” drop coils. New shocks all the way around. Factory rear 3/4 original leaf springs with 1.5” shackle Drops and air lift air ride bags in...
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    I have an endless supply of these pirelli’s based on what I do at almost no cost.
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Yessir. Borgeson: https://www.borgeson.com/Borgeson-Street-and-Performance-Series-C-10-12.7-1-Ratio.html
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Driving it home tonight even without a trailer I can feel the light twitch in the steering. It’s almost like it tracks and darts quickly from one side to another in a short amount of steering wheel turn but drives straight down the road. Maybe I need to look at my alignment.
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    28dbs outdoors rv mtn trx travel trailer:
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Trailer only. This truck weighs around 4600
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    Thanks for the response. The empty weight on the trailer at the scales was around 8600. Im assuming that we probably add 1000 pounds once loaded but I need to verify this. Typically my tounge weight measures in between 875-950 pounds based on the tongue weight scale I have. Once this is set, I...
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    Twitchy steering with a big travel trailer (rear sway bar help?)

    The pirellis I have are an xl load rating of 2535 lbs per tire at a max 50 psi

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