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  1. 1

    TBI 454 Timing Questions

    7,500'
  2. 1

    TBI 454 Timing Questions

    Any input on advancing timing while at high altitude?
  3. 1

    Confused about brake upgrades for 93 K1500

    thank you! JD7 it is.
  4. 1

    Confused about brake upgrades for 93 K1500

    i have a 93 k2500 454, how do i know what brakes I have?
  5. 1

    Raybestos EHT369H brake pads....

    Y'all still like the raybestos? Amazon reviews are not inspiring...
  6. 1

    Octane requirement?

    PO was running 91 in CA. At 7.5k’ and current prices I’ll be running 85 with 87 on occasion.
  7. 1

    Octane requirement?

    I don’t even know what’s going on in this thread anymore. All I wanted was to know what gas to run . ‍♂️
  8. 1

    Octane requirement?

    At this point it’s 85 whether the truck likes it or not! 91 is reserved for the NSX and Alfa
  9. 1

    Clicking seat?

    This is on electric powered seats. Unfortunately neither of those posts seem to be about the same issue?
  10. 1

    Clicking seat?

    Do you guys have any knowledge about front drivers seats that click when moving in a rocking motion? Like something is loose... Like, if i am in the seat and kind of wiggle or rock back and forth the seat makes a clicking sound... Car is 93 TBI k2500 with electric power. Pic for reference...
  11. 1

    Power steering moan

    A belt out of duct tape LOL wtf.
  12. 1

    Power steering moan

    Do you take the grill off to access the the pump? How do you fit a drill in there?
  13. 1

    Power steering moan

    Thanks, I’ll look into flushing it soon. They are Alcoa wheels. Not sure about much else. Truck has 80k miles, but they were kind of hard miles. Just went through and refreshed about everything on it. It looks and feels it’s age now :)
  14. 1

    Power steering moan

    Hi, My truck (454 tbi) has a constant and subtle power steering moan. At least that’s what it sounds like to me. It increases slightly with revs. It’s not that bothersome so I’m wondering if it’s just a normal k2500 noise?
  15. 1

    Best value headers for 454 TBI (CO legal)

    Not totally sure about CO, but CA is emission unless made prior to 76
  16. 1

    Best value headers for 454 TBI (CO legal)

    Im curious what members would recommend as the best header choice for my 1993 Suburban K2500 (454 TBI). I'm looking for something that will still allow me to pass emissions and wont break the bank. I dont do any towing. Just live at high elevation and looking for a bit more oomph. The exhaust is...
  17. 1

    Octane requirement?

    Yeah, I mean… not much past 65 but it does the job. Never driven a 350 around here. Towing a u haul up that stretch was tough though.
  18. 1

    Octane requirement?

    You read back further in the thread and saw I had a supercharged car??? This thread is about n/a 454 TBI….
  19. 1

    Octane requirement?

    So you’re voting for 85?
  20. 1

    Octane requirement?

    west of denver
  21. 1

    Octane requirement?

    thanks, will use 87
  22. 1

    Octane requirement?

    Hello, Live at 7,500’ and wondering what fuel I should use in my 93 7.4L suburban. 85, 87, and 91 are available. Previous owner used 91.
  23. 1

    Bad alignment? (see report inside)

    I’ve found a mechanic and alignment guy who actually knows about the cars so should be good to go. Thanks for all the input.
  24. 1

    Bad alignment? (see report inside)

    Ok thank you
  25. 1

    Bad alignment? (see report inside)

    Hello, Relatively new owner of a 93 GMC K2500 Suburban. Just replaced almost everything on the front end with exception of lower control arm bushings. The shop that did the work had their neighbor (shop) align the car. It tracks straight enough and feels tight but feels like it needs a lot of...

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