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1991 suburban project

Discussion in 'Introduction' started by 3FingerDan, Apr 12, 2021.

  1. 3FingerDan

    3FingerDan Junior Member

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    Joined:
    Apr 12, 2021
    Location:
    Missouri
    First Name:
    Dan
    Truck Year:
    1991
    Truck Model:
    Suburban
    Engine Size:
    5.7
    Hello all. Just purchased a 1991 suburban from the original owner and it needs some work. Not sure what direction to go with this. Is a v1500 with a 5.7. It’s been sitting for 3 years, but started right up after putting a battery in it (super surprised with 3 year old gas).

    Thinking of putting an 5.3LS in it as I have donor vehicle lined up for cheap and looking to see about putting 3/4 or 1 ton axles under it. Just browsing and found a wealth of knowledge so far and hope to contribute in the future.

    2CE3FA09-05E1-4C03-A775-5AD571C0D0EE.jpeg
     
  2. 1973c10

    1973c10 Full Access Member

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    Joined:
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    Location:
    Oregon
    First Name:
    Don
    Truck Year:
    1973
    Truck Model:
    C10
    Engine Size:
    454
    Welcome aboard
     
  3. Craig 85

    Craig 85 Full Access Member

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    Location:
    Grass Valley, CA
    First Name:
    Craig
    Truck Year:
    1985
    Truck Model:
    K30 SRW
    Engine Size:
    454/TH-400/NP205
    :welcome:
     
  4. Frankenchevy

    Frankenchevy Lying Dog-Faced Pony Soldier

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    Jeremy
    Truck Year:
    Square
    Truck Model:
    CUCV
    Engine Size:
    Small
    All depends on your plans for the truck. One ton axles are becoming a premium, but I’m all for it. You’ll get 10 different opinions on what to do with the engine, but no one will argue with a Dana 60 and 14ff.
     
  5. gmbellew

    gmbellew Full Access Member

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    Joined:
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    Location:
    Kansas city
    First Name:
    glen
    Truck Year:
    1990
    Truck Model:
    suburban 1500
    Engine Size:
    350
    welcome! good to see another burb in the mix.

    figure out your uses for the truck and let that guide you on your path.

    I have a 1990 v1500 with a 3in lift, 33in tires, and mostly stock drivetrain 350TBI and 700r4 with 3.73 gears. I use it as a daily driver, family hauler to the farms, and hunting rig with mild offloading that is usually associated with hunting trips or the farms.

    I have thought about an LS swap, but I like the very simple TBI set up and it gets around town ok and cruises the highway fine at 75mph. if I were to change anything on mine, I would get 4.10 gears to help with the tire size and push the rpm a little higher into the power band on the highway.

    if I were going to tow more than a few thousand pounds regularly or beat it up in the rocks offroad, I would look into different engine and axles. but those aren't my uses so I can keep it simple.
     
    mcarlo86 and RecklessWOT like this.
  6. WFO

    WFO Full Access Member

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    Location:
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    First Name:
    Dan
    Truck Year:
    1986
    Truck Model:
    K20
    Engine Size:
    350
    Welcome from the Texas Panhandle.
     
  7. Babs

    Babs Full Access Member

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    Location:
    Ottawa Valley
    First Name:
    Paul
    Truck Year:
    1976
    Truck Model:
    Chevrolet CUCV
    Engine Size:
    350
    :welcome:
     
  8. HOTFOOT

    HOTFOOT Full Access Member

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    Location:
    northwest ct
    First Name:
    michael
    Truck Year:
    1980
    Truck Model:
    gmc k3500 srw
    Engine Size:
    400
    welcome from Connecticut
     
  9. Bextreme04

    Bextreme04 Full Access Member

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    First Name:
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    Truck Year:
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    Truck Model:
    K25
    Engine Size:
    350-4bbl
    LS swap would be super easy on a 91, since you already have the fuel injection and the vss speedometer. You can swap a 5.3 or 6.0/4l60e straight out for the 5.7/700R4 with pretty minimal extra parts. You would need swap mount plates and swap headers and switch the TBI fuel pump for an EP381 pump.
     
  10. 78C10BigTen

    78C10BigTen Full Access Member

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    Location:
    pennsylvannia
    First Name:
    Ted
    Truck Year:
    1978
    Truck Model:
    C10 BIG TEN
    Engine Size:
    350
    Your burb looks alot like @Vbb199 burb.
     
    Vbb199 likes this.
  11. animal

    animal Super Moderator Staff Member

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    Location:
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    First Name:
    Lee
    Truck Year:
    1986
    Truck Model:
    c10 silverado
    Engine Size:
    350ish
    :welcome:
     
  12. Vbb199

    Vbb199 B-rate Hillbilly Customs

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    Location:
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    First Name:
    Vince
    Truck Year:
    91, 89, 87
    Truck Model:
    91 Blazer V1500- "K5ton", 89 Suburban R1500
    Engine Size:
    502, 350, 350

    Nice truck, peak my pfp.... i got your brother kinda... 1989
     
    78C10BigTen likes this.
  13. Catbox

    Catbox Full Access Member

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    First Name:
    Peter
    Truck Year:
    1979
    Truck Model:
    C20 Silverado Camper Special
    Engine Size:
    461
    Welcome from Oregon.
     
  14. HotRodPC

    HotRodPC Administrator Staff Member

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    First Name:
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    Truck Year:
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    Truck Model:
    Silverado / Silverado
    Engine Size:
    454 - Turbo 400 - 3.73 350 - 700R4 - 4.10
    Great project start. That is great news after starting with 3yo gas in it. How much gas is in it now? I'm wondering if it might be a good idea to top off with 91 octane or whatever you can get without ethanol and run it out.

    So let's hear the story about 3 fingers. So what happened that you lost a few??? We're open and honest like family here, so don't be shy. Spill it. I see 4 fingers and a thumb on the Left hand, so it must be the right hand missing some digits.

    I'd fire up a build thread in the Under Construction section and document your progress while getting help, ideas, suggestions and opinions along the way.
     
    78C10BigTen likes this.
  15. mcarlo86

    mcarlo86 Full Access Member

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    Location:
    ND
    First Name:
    Brian
    Truck Year:
    1990
    Truck Model:
    Suburban
    Engine Size:
    350
    Nice burb! Almost identical to ours. :patriot:
     
    78C10BigTen likes this.

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