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Taking TBI off of truck.. what do I need?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BillyBob, Oct 4, 2001.

  1. BillyBob

    BillyBob 1/2 ton status

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    I gotta take the TBI off of my 87. the question is, what do I need to take in order to make it work properly.. are there any sensors I won't need?
    What I know I need:
    TBI, manifold, all sensors on manifold.
    knock sensor on block
    O2 sensor
    distributor
    ECM
    fuel lines from 87
    Tank & sending unit.

    Anything else I need? Like the TV cable? I dunno what I need to take off

    <a target="_blank" href=http://billybob87k5.50megs.com>Homepage of Porky & Stinky</a>
    ".. Sanatarium.. leave me be..."
     
  2. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>BTW the TBI is going on his 84, he's using an Edlebrock manifold with the Holley throttle body adapter plate
     
  3. Storm Trooper

    Storm Trooper 1/2 ton status GMOTM Winner

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    Why are you taking it off?
    and what are you changing to?
    If I knew what you were putting in it would help.
    I had to dump the TBI on my 87 also but it was because of a lack of a TBI manifold for my new motor.
    Got to go for now but I'll check back later....

    [​IMG]<font color=red>[/b]"Rid'in HigH in my K5"[​IMG]
    ....[​IMG]<font color=blue>[/b]"8" Lift -<font color=purple>38.5's"[​IMG]....
     
  4. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>He's taking off the TBI from his 87 and putting it on his 84, which has a Q-jet now. The 87 has to be gone by the end of the month and its too rotted to sell whole. What motor do you have? You can use TBI on a carb manifold
     
  5. 84_Chevy_K10

    84_Chevy_K10 Banned

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    He's probably removing it so he can get something that flows sufficiently to make decent power.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  6. BillyBob

    BillyBob 1/2 ton status

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    Yeah, the TBI is geting swapped from my rotted out 87 to my nice 84. Gonna use an edelbrock performer intake with a holley TBI adapter plate. So, does anyone know what I don't need? do I need everything?

    <a target="_blank" href=http://billybob87k5.50megs.com>Homepage of Porky & Stinky</a>
    ".. Sanatarium.. leave me be..."
     
  7. Storm Trooper

    Storm Trooper 1/2 ton status GMOTM Winner

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    You picked a tough job. To put the TBI on your 84 will be a nightmare I think.
    You are talking about wiring harness, sencers, computer etc. etc.
    Why don't you go with a aftermarket injection system?
    It would be a whole lot easier.
    If you really insist, talk to moneypit. He has a friend that is doing it to a toy.
    It would be a lot easier.

    [​IMG]<font color=red>[/b]"Rid'in HigH in my K5"[​IMG]
    ....[​IMG]<font color=blue>[/b]"8" Lift -<font color=purple>38.5's"[​IMG]....
     
  8. DMK

    DMK 1/2 ton status

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    I think the tv cable for the carbed engines are a different length. So yes take teh tv cable or buy a new one.
     
  9. mnstr_fx

    mnstr_fx Registered Member

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    If you are going to convert your 84' by using all of the 87' stuff, here is what you need to do.

    Get ALL of the engine sensors.
    Water Temp,
    Oil Pressure,
    Knock,
    Throttle Position,
    MAP,
    ESC
    O2
    etc...

    Parts from the 87'
    Distributor,
    Water Pump, (if you are also going to go serpetine belt)
    Throttle Body,
    Exhaust Manifolds, (if you want to use these for the O2)
    Wiring harness, (from firewall to ECM)

    It will be a little dicey, BUT I believe that the firewall connection should be close to the same on your 87 as the 84. YOU WILL NEED TO VERIFY! :) There is probably a couple of wires which will need to be taken out and hooked up since the 84' was not wired for an TBI engine, but the power, wipers, fuel level sender, ect.. should all be close.

    Once you have this done, there are a total of 6 wires that you need to hook up to make the TBI run. 2 grounds, 3 powers and 1 cranking wire. You will also need to wire in the electric fuel pump, (get the $110 Autozone one, pricey but has NEVER let me down. Can't say that much for the other $34 pumps!)

    There are alot of details that I am leaving out, but get the parts first then ask the specifics. BTW, I have done 2 trucks and am getting ready to do a friends 86 K5 the same way.





    76-82 Chevy Pickup / Blazer - K5-K10-K30
    90' TBI
    TH 400
    203 / 205 Doubler
    Dana 60, Corp 14 - 4.88'd - Detroit Locked
     
  10. KrebsATM02

    KrebsATM02 1/2 ton status

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    Does the 84 block have all the places for the sensors? I.e. knock, temp, etc...

    Doug Krebs
     

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