Carb questions

Discussion in 'The Venerable Q-Jet' started by jhonjhon, Apr 11, 2020.

  1. jhonjhon

    jhonjhon Well-Known Member

    Hello, I just refound :rolleyes: the carb that I took off the 71 455 that is going in my 66 Skylark. The number is 7041540 MF 0771. I believe that is correct and original to the motor. It's crusty but I believe rebuildable. Attached are a few pics. What would need to be done to remove the unnecessary vacuum parts. I don't know if it was emissions. The first pic looks like an electric solenoid that controlled a vacuum port. The second pic shows 2 vacuum things " lol". The rear one goes to a port at the rear of the carb. Is all this necessary. The intake currently came with a vacuum "tree" at the front left side of it. Any help would be greatly appreciated. Thanks again, john
    20200411_155823.jpg
    20200411_155804.jpg
     
  2. jhonjhon

    jhonjhon Well-Known Member

    I also found a Rochester 7029245 kb 0519
    I believe it's for a 69 350 with a manual trans. I couldn't find a cfm rating on it from any web site. Would this possiblity work, a lot less stuff attached to it. If not, would it be worth selling and an average price. It would have to be rebuilt but looks to be in better shape than the 71.
    Thanks again
     
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    That solenoid is for the Transmission Controlled Spark emissions system. The other picture shows the secondary choke pull off. It just provides more control to the choke as the engine warms up.
     
  4. jhonjhon

    jhonjhon Well-Known Member

    I assume I can delete the transfer solenoid is it best to leave the 2 pull offs alone? Thanks for the help john
     
  5. jhonjhon

    jhonjhon Well-Known Member

    Transmission solenoid damn spell check
     
  6. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    Haha the ole knox converter solonoid. Thats a genuine CA emmisions device from the era. My 68 pontiac GP had one. I m sure I tossed it in the garbage
     
  7. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    The other 2 choke pulloff and secondary dashpot are pieces you want on your carb.
     
  8. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Yes, you can eliminate it, but hold on to it, a concourse resto guy may want it. You can leave the choke pull offs. the front one is absolutely essential in that it controls the secondary air valves as well.
     
  9. jhonjhon

    jhonjhon Well-Known Member

    I just saw your last message. It didn't send it my e mail. Thanks again for all your help. John
     

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