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What year was TBI started on the trucks??(and all '84, 85 and 86 owners)

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by dyeager535, Apr 19, 2001.

  1. dyeager535

    dyeager535 1 ton status Premium Member

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    What year was TBI started on the trucks??(and all \'84, 85 and 86 owners)

    Was it '87? Anyone that has the stock carb from the years '84, '85, and '86, (or whatever teh last carbed year was) I would be very appreciative if you would post here whether or not the carb has an electrical plug either on teh top front passenger side of the carb, and/or one on the drivers side front of the carb, facing forward. Passenger side plug blue, drivers white typically.

    Trying to track down first year, if ever, of TPS partial control of lockup in our trucks.

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Re: What year was TBI started on the trucks??(and all \'84, 85 and 86 owners)

    Everybody knows the first year of TBI was started in 87.
    I do know what you are talking about on the electric plugs on the carbs. I have seen those on 85 and 86 years. I dont think any 84 nor older vehicles had these. 85 marked some small changes in the Chevy trucks, and those electric gizmos on the carbs was one of them.
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: What year was TBI started on the trucks??(and all \'84, 85 and 86 owners)

    I just wanted to make sure that there was no "slip" of TBI to CA trucks before '87, since they are always at least a year ahead in emissions stuff.

    I really wish people would help out here, this would be a way to run the 700 automatically, with no ECM per se.


    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  4. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Re: What year was TBI started on the trucks??(and all \'84, 85 and 86 owners)

    Painless wiring and B&M both sell kits to run a 700 without the ECU.
    Also the 84ish-86 trucks ran a Carb with electric mix control. I Believe it didn't require a ECU. It ran off a temp sensor in the water neck.
    There is also a CCC (computer controled carb) that was out about the same time. Near as I can tell they didn't get put on trucks just cars with V8's and V6's. It did have a TPS and O2 sensor and was ECU equiped.

    Diging it in the dirt with my K5's
    Grim-Reaper
    <A target="_blank" HREF=http://grimsk5s.coloradok5.com/>http://grimsk5s.coloradok5.com/</A>
     
  5. Emmettology 101

    Emmettology 101 3/4 ton status

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    Re: What year was TBI started on the trucks??(and all \'84, 85 and 86 owners)

    TCI also makes a kit to run a 700r4 on a non-comp vehicle.

    I would advise against the B&M unit. My friend installed one and doesn't like it, put it is twice the price of the others...

    Mike - <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>[​IMG]
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: What year was TBI started on the trucks??(and all \'84, 85 and 86 owners)

    I don't believe there is any way they would have run the mix off of temp alone. (no reason to go from no electronics in at least '83 to JUST the MC solenoid with no ECM in two years or less, when the cars had full CCC systems from 1980 up, on the same motors)

    I'm almost 100% sure that those trucks you are thinking of have TPS only. I've seen the TPS only carbs, but have never had the chance to look into the engine bay of an unmolested '84, '85', and '86 truck, to make SURE thats where they came from. If it has an MC (mix control) solenoid, you can be assured that it has an ECM/ECU running it. MC solenoid on teh passenger side, TPS on the drivers. If I'm wrong, I have no problem admitting it, but without anyone checking for me, no way to prove one way or the other, unless its in my interim service manual for '86. (someone that has one handy can check theirs if they like)

    All I have ever heard of the aftermarket units is that they are a pain. They unlock/lock too often, etc. If the factory parts are out there, it makes MUCH more sense to do it that way, since you know they will fit, and work (IMO) very good, ESPECIALLY if you can tie it into a TPS.

    edit: Haha, what an idiot I used to be. :) Trucks got CCC in CA certain years, or dual capacity pumps or standard Q-jets.

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
    Last edited: May 19, 2005

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