fi for a 75 buick electra 455

Discussion in 'High Tech for Old Iron' started by garyd, Nov 23, 2018.

  1. garyd

    garyd Well-Known Member

    ive got a basically stock 455 minus emissions. car has dual pipes from manifold back. there is a poston s divider intake manifold on there .car has stock hei.
    the carb is bad as it leaks gas and is just wore out.
    i want to install a fuel injection set up on it.
    ive narrowed my choices down to these two
    they are https://fitechefi.com/products/30003/
    they have an 80$ rebate

    and https://www.holley.com/products/fue...sniper_4bbl_tbi_kits/sniper_efi/parts/550-511


    i like the cost of the fitech, but i am leery about them. ive come across good and bad reviews.
    holley is a famous brand but no rebate so it ends up being 200$ more.
    i dont race or anything . just a cruiser
    no plans of increasing power of the engine ie cam pistons ect
    im looking for an easy install that is reliable
    i am getting the pump that you cut the tank to install.
    i figure it will be better than the inline pump
    which would you get
    thank
     
  2. OHC JOE

    OHC JOE BUILDIN A 1970 GSX CLONE

    I have fitech in my impala I installed this past summer no issues easy install
    I haven't gotten use to the hard pedal and quick take off yet but I don't drive it often also.
     

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  3. pbr400

    pbr400 68GS400

    You can have your Qjet (or a good core) rebuilt by guys on here for less than half the cost of fuel injection. No need to worry about installation, wiring, fuel pump, etc. A well sorted factory carb is a beautiful thing.
    Patrick
     
    Mark Demko and rmstg2 like this.
  4. Mark Demko

    Mark Demko Well-Known Member

    With a correctly built and calibrated Q-Jet on your '75 455 it will run as well as fuel injection MINUS the cost.
    People wanting fuel injection seem to forget that its a throttle body type, the EARLIEST AND MOST PRIMITIVE type of injection.
    The fuel is still introduced into the SAME area as the carburetor, STILL has to travel the SAME convoluted passages as the fuel from a carb.
    If you were wanting PORT injection, that's a different story.
    DIRECT INJECTION would be cool, big power advantages to that, but a few downsides too.
     
  5. sbrmd

    sbrmd Well-Known Member

    I've got the original Qjet, which has a low -mile rebuild by Jim Weise, that came off my '75 Electra 455 when I went to FAST efi. Interested?
     
  6. garyd

    garyd Well-Known Member

    price? and what is low miles
    ive done the math and it will be around 2 k just for the fi kit witht the intake pump.
    now im thinking i can use that money on other parts for the car like new bushings for the suspension and tires
     
  7. The Big Guy

    The Big Guy Car-a-holic and there is no cure

    I can see both sides of the argument. I have 2 1979 Lincoln Mark Vs, identical except for color. Both have 28,000 miles. The first one has been plaqued with fuel issues since I got it. In fact, I didn't make it home when I picked it up. Hard starting, vapor locking, you name it. I had the carb rebuilt, fuel line re-routed and insulated, but not much better. I had a new carb and electric fuel pump installed, and that helped, but it was not completely cured. I have a friend who has a shop and he's a big proponent of FI. He uses the FiTech brand and has had very good luck with it. So we put one on the Lincoln. Now the car runs like a champ, no fuel issues, no bogging off idle, no vapor lock. It went from a miserable car to a wonderful car.

    The FiTech unit is self-learning and has been trouble free. I'm very sold on it. We installed it on my '68 Cutlass that we've built to W31 specs. The W31 has a very lumpy cam. But with the FiTech installed, it actually ran a bit smoother than I thought it should. However, as we continue to run it, and the FiTech "learns" the cam, it's actually starting to get that erratic W31 idle. How cool is that?

    On the flip side of the coin, the other Lincoln still has a carb. We removed it, cleaned it, and tuned it, and it runs perfectly. Pump the gas twice, it fires right up, kicks up on the high idle, and purrs like a kitten. It still has just a brief hesitation off idle that seems to be consistent with late 70s cars, but otherwise is fine. As long as it continues to do fine, I'll leave it alone.

    The first Lincoln was such a mess that I put it up for sale. After the FI, I love the car and have no desire to sell it. So in that case, the FI cost was worth it to me.
     
    Mark Demko likes this.

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