89 Suburban DD Build (finally a 3/4ton)

Discussion in '1936-Present Suburban' started by eclipse85k10, Dec 22, 2010.

  1. eclipse85k10

    eclipse85k10 1/2 ton status Premium Member

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    Pm'd him and that's what he said but said besides that it's a great radiator. This guy is a major help for sure!
     
  2. Big Ray

    Big Ray 1 ton status Premium Member

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    ...my bad...:whistle:
     
  3. AgDieseler

    AgDieseler Certified Scrap Producer Premium Member GMOTM Winner

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    For consideration, I'm very positive about my Ron Davis radiator. It was expensive, but it's a very high quality piece of gear that will last, and I felt justified treating it like an investment in engine longevity.

    I still have the dimensional drawing from 2012 if that might be helpful.

    David
     
  4. eclipse85k10

    eclipse85k10 1/2 ton status Premium Member

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    Thanks. Checked those out and would love to have one of those but might be a more than I can do now. Probably gonna try the spectra when I get back from my trip.
     
  5. 82355

    82355 1 ton status Premium Member GMOTM Winner

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    Get a radiator in it?

    Martin
     
  6. eclipse85k10

    eclipse85k10 1/2 ton status Premium Member

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    Update haven't been on here in a while since I lost the old forums on tapatalk. I've had my exhaust redone with a single 3" pipe and a single flow master. Sounds great but after two weeks it's almost a bit too loud but I did get my almost completely clogged cat removed. The burbs been pretty doggy but I was hoping that was due to the bad cat but having it removed didn't make a difference. It's almost like it's off and on being doggy.

    Here's what's been done
    New rebuild with 750 miles on it
    Rebuilt thottle and injectors with new sensors
    New plugs
    New wires
    Timing checked 3 times set to 0 with the dist wire unplugged
    Checked for vaccum leaks.

    Some things Im thinking I need to check next.
    Egr valve
    O2 sensor

    Sitting here in the dark waiting for our power to turn back on after the nasty windstorm 3 days ago....
     
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  7. stump_puller

    stump_puller 1/2 ton status Premium Member

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    If the o2 is way off it could cause it to run like crap. Your fuel pressure is good?
     
  8. y5mgisi

    y5mgisi 1 ton status

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    Keep in mind that the o2 is out of the equation at full throttle.
     
  9. y5mgisi

    y5mgisi 1 ton status

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    Also, is your Flowmaster a 40? I did that once... That's why my current setup on the burb is a Flowmaster 50 with single 3" in and dual 2.5" out. It sounds a lot like many of the new trucks with a cat back exhaust. Pretty rumbley but pretty tame. Never embarrassingly loud and on the highway it is very quiet with no drone.
     
  10. eclipse85k10

    eclipse85k10 1/2 ton status Premium Member

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    Thanks gonna look into replacing the o2. I'm thinking eventually I'm gonna replace this muffler. It sounds cool but kinda getting old being so loud.

    I heard talking to a friend some of the tbi 350s had brass gear distributor that wear out a d retard the timing?
     
  11. Burbdood 74

    Burbdood 74 Giver of not a single damn...

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    Something you might consider is if your cat was almost clogged, a lot of carbon might have built up in your EGR passage in the intake if there was any kind of flow reduction out of the tailpipe. You may need to tae off the EGR and clean it and run it a few times to clear it out.
     
  12. y5mgisi

    y5mgisi 1 ton status

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    I THINK that no tbi trucks got the special distributor gear. I am pretty certain that's a roller cam only thing.
     
  13. stump_puller

    stump_puller 1/2 ton status Premium Member

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    Yea should be special gears for roller & billet cams.
    If you have an adjustable timing light should be able to see what the timing is with the computer hooked up.
     
  14. eclipse85k10

    eclipse85k10 1/2 ton status Premium Member

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    Well I replaced the O2 cause it looks pretty nasty but no change. So I finally pickup a distributor and glad I did because it's a night and day difference and I was able to find out also that my limited slip rearend works too :saweet:
     
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  15. stump_puller

    stump_puller 1/2 ton status Premium Member

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    Glad it's fixed.
     
  16. y5mgisi

    y5mgisi 1 ton status

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    Good to hear!
     
  17. y5mgisi

    y5mgisi 1 ton status

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    Hard to believe it's the same truck you posted some 5 years ago!
     
  18. y5mgisi

    y5mgisi 1 ton status

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    I would also like to know of you ended up doing the radiator in it.
     
  19. jscusmcvet

    jscusmcvet Registered Member

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    Beautiful. Great inspiration.
     
  20. eclipse85k10

    eclipse85k10 1/2 ton status Premium Member

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    Long time update! The ole blue burb has been resting none running for years and is back running again! Time for more new plans and fixing old problems.

    IMG_20200823_184219.jpg
     
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