Recent content by 409acoupe

  1. 409acoupe

    409 Questions

    Plugs that were in it were NGK gr5’s and so I’ve put the same ones in for now. Was toying with the idea of trying the 4’s which are one heat range higher but thought I’d try the same ones first now that all the general tuning is basically done so I can see what these new plugs do. Don’t like to...
  2. 409acoupe

    409 Questions

    I will be pulling the carbs off to put the phenolic spacers on so i can sneak a peak again at the primary carb. I rebuilt all of them and the primary got new throttle blades and shaft. jets, all new gaskets etc. Motor idles great now with the new bases and proper tune. I have just put in new...
  3. 409acoupe

    409 Questions

    Idles fine. Once I got the new GOOD secondary bases installed we did a full tune on the motor. Idle mixture screws, timing, idle screw etc. Like I said the motor runs fine for the most part other than this slight miss which I would think is a result of these plugs looking shitty but why they are...
  4. 409acoupe

    409 Questions

    That’s the next step I’m gonna try before getting too excited about anything else. Distributor is a new pertronix with vacuum advance I have hooked to full manifold. When I was dealing with the shit speedway based on the secondary carbs I went through the entire intake carbs etc hunting for any...
  5. 409acoupe

    409 Questions

    I was looking at the manifold tracing the path of plenum and it seems to somewhat mix to where some of the rich plugs mix with the good ones but I may be mistaken
  6. 409acoupe

    409 Questions

    Put a new powermaster power gen on the car. so far so good. doing some short cruises 30-40 miles round trip till i'm satisfied she's happy. Now on another subject, let's hear some opinions on these plugs. First pic is 2 through 8 and second pic is 1 through 7. I understand the black dry soot...
  7. 409acoupe

    409 Questions

    We did pull it apart. We have a great alternator shop in town and he pulled it apart and rattled off a list of the shit that failed in it. Diodes, internal regulator even the windings around the commutator!! Emailed the vendor with all the details of what we found and a breakdown of the entire...
  8. 409acoupe

    409 Questions

    Sometimes i wonder about my luck with new parts! My stealth alternator (looks like a generator) burnt up after 150 miles. Only thing i'm running for major power users is a Maradyne electric fan and a Holley fuel pump. According to specs on both the fan draws 19 amps peak and the fuel pump 2 so i...
  9. 409acoupe

    409 Questions

    Car weighs 2800lbs
  10. 409acoupe

    409 Questions

    2200 stall so nothing crazy
  11. 409acoupe

    409 Questions

    Spent some time tuning on the motor with the new bases in last night. Motor is much happier, primary carb actually reacts to the mixture screws. We bumped the timing up a little. only thing that is still being a little finicky is the vac advance. We have the idle screw in enough that i think we...
  12. 409acoupe

    409 Questions

    It’s true!
  13. 409acoupe

    409 Questions

    What’s that?
  14. 409acoupe

    409 Questions

    yes that's the plan tomorrow as i will have to order jets if i go down that road.
  15. 409acoupe

    409 Questions

    Just received the new secondary bases from Vintage Speed. Man i have to say what a difference in quality between them and the speedway ones i have. Blades seal air tight and a much better machining job on the overall unit. the motor will be a lot happier once i get them swapped no question! So...
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