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Reasonable offer for a TBI setup? More info needed?

Discussion in 'The Garage' started by juanblzer, Dec 2, 2002.

  1. juanblzer

    juanblzer 1/2 ton status

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    92 Camaro with a 305 with TBI.
    What all do I need from the donor (he's swapping to a carb for street use). What should I offer for the set up?
    I have a 350 goodwrench motor with an Edelbrock performer intake. Is this a good swap? Any and all help is appreciated.
     
  2. newyorkin

    newyorkin 1 ton status

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    Re: Reasonable offer for a TBI setup?

    I'll trade my TBI setup for that!
     
  3. juanblzer

    juanblzer 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    I'll be keeping my motor. I just want different fuel delivery for the rocks and angles etc. /forums/images/graemlins/k5.gif
     
  4. TopOff

    TopOff 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    If you have a stock 350, the injectors from the 305 just might be enough to power your 350. You can get an adjustable pressure regulator to help it out.

    Or you can change the injectors all together.

    You will need the pump (in the tank). ALL the WIRING harness(es), the computer, the distributor, knock sensor, MAF or speed density sensor, the TBI unit itself, the return fuel-line (unless you make your own), the O2 sensor, temp sensor, AND there may be one or two sensors more ( I am not sure when they started the crank, and cam sensors.

    Have fun!

    Check out
    DIY-EFI.com
    thirdgen.org

    Typically 305 TBI units complete are going for $200-$400 on thirdgen.org. Some are finding them for $100!!!

    Good luck.
     
  5. juanblzer

    juanblzer 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    I have headers, will that help?
    also can't I use a external fuel pump (electric of course)...I plan on going to a fuel cell soon and internal mount is out of the question.
     
  6. TopOff

    TopOff 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    I am not sure what you mean by "I have headers - will that help?"

    There are external fuel pumps available. I THINK they are Warlboro brand or something like that. I beleive there are different GPH and pressures. IIRC most TBI units require 11 - 18 PSI.

    The wiring harness ($50 - 350!) , the TBI unit itself ($40 - 250), and the computer ($10- 150 depending on which one) will be the most expensive pieces.

    You can also check out customefis.com VERY GOOD sight. All text, all reading, but GREAT information.

    Have fun!
     
  7. juanblzer

    juanblzer 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    what about the manifold?
     
  8. juanblzer

    juanblzer 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    what about swapping his complete motor and harness for my
    goodwrench 350 and carb set up?
     
  9. newyorkin

    newyorkin 1 ton status

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    Re: Reasonable offer for a TBI setup?

    Oh, now I get what you're saying... I thought you meant trade the motor for the TBI rig... Sorry for the goof!
     
  10. TopOff

    TopOff 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    Oops, I guess I didn't read that right.

    Your 350 Goodwrench motor (presume a 3 year warranty) and Edelbrock intake and Carb is worth more than his 305 and TBI - IMHO.

    If all your after is a TBI, go find one in the J-yards. I bet you can get one for $150 or so. Depending on which heads your 350 has, a TBI to Edelbrock adapter would be easier than swapping out the manifolds/heads.

    Then when you get it running, sell the carb and distributor.

    Good luck.
     
  11. ntaj*ep

    ntaj*ep 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    Do you have to swap out the Dist.?
     
  12. Emmettology 101

    Emmettology 101 3/4 ton status

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    Re: Reasonable offer for a TBI setup?

    Well normally yes. Stock GM systems use a 2 connector disty on some apps. with a small disty cap.... Topoff is using a set-up that runs a stock HEI which sounds pretty cool but he is the first I have seen to run like this.
     
  13. TopOff

    TopOff 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    Emmet,

    The mechanical/vacuum advance has been a REAL BIG PITA!

    I wish my Unilite worked with the GM computer... That had a perfect advance on it. /forums/images/graemlins/frown.gif
     
  14. ntaj*ep

    ntaj*ep 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    So theres a like cam postion sensor in the dist. or what? Why can't you use your existing setup?
     
  15. TopOff

    TopOff 1/2 ton status

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    Re: Reasonable offer for a TBI setup?

    I am using my existing (HEI) setup, it just sucks!

    My current cam uses (I think) a strange curve. It seems to like to have an agressive advance from idle to 1600-1800 then it pings. So I am running it a little retarded more than I want. So now at about 2200 it falls on its face.

    I know I can dial this in using a computer controlled ignition and burning a couple of chips. Heck, I can probably simply let the computer "learn" the advance-curve and let the knock sensor read the knocks to retard the timing as needed. /forums/images/graemlins/laugh.gif

    BTW:
    I understand the later year trucks (OBDII) started to use camshaft timing and crank timing sensors.
     

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