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  1. Valveguy

    Need recommendation for a Carb for better MPG!

    I appreciate what you are saying but I'm not that guy. Everyone is different. I'm mostly in love with the body style and I would have bought the Demon if it had a slant six. Yes, the extra power is absolutely fun from time to time but it's not a got-to-have for me. I have a 2010 hemi Challenger...
  2. Valveguy

    Need recommendation for a Carb for better MPG!

    Yes, it did in fact bump it up some and put my speedometer in the right place.
  3. Valveguy

    Need recommendation for a Carb for better MPG!

    This is ALL very helpful, Thank You!!
  4. Valveguy

    Need recommendation for a Carb for better MPG!

    About 18 years ago, I see that I took out the 323s and put in 294s. Would it be worth going down to a 276? I guess I would have a 294 and 323 to trade/sell. In the meantime, I'm going to work on getting the 340 tuned. You guys are wonderful!
  5. Valveguy

    Need recommendation for a Carb for better MPG!

    Efficiency sounds good to me!
  6. Valveguy

    Need recommendation for a Carb for better MPG!

    This is some pretty great perspective, and you are spot on! I didn't think of it quite like this but also thought if I could get maybe 3-5 more mpg I wouldn't have to stop for gas so much with our 16 gal. tanks. My commutes are 60 miles a day. I am very good at driving in an efficient way so I...
  7. Valveguy

    Need recommendation for a Carb for better MPG!

    This is Wonderful!
  8. Valveguy

    Need recommendation for a Carb for better MPG!

    I Live in Lincoln Nebraska. I wish I had one of you guys close enough to hire to spend a couple hours with me and my Demon to see what might be going on because there are other symptoms that might make a diagnosis easier. I sure appreciate all the replies! THANK YOU!!
  9. Valveguy

    Need recommendation for a Carb for better MPG!

    Excellent info, Thank You!!
  10. Valveguy

    Need recommendation for a Carb for better MPG!

    Yes, good point!:lol:
  11. Valveguy

    Need recommendation for a Carb for better MPG!

    Unknown at this time but thank you for asking because now I'm going to learn how to find these answers.
  12. Valveguy

    Need recommendation for a Carb for better MPG!

    Thank you, I will check on that!
  13. Valveguy

    Need recommendation for a Carb for better MPG!

    My tach weirdly stopped working so I'll have to get that up and running again to answer the rpm question but as I remember, I do think it was about 2200@65.
  14. Valveguy

    Need recommendation for a Carb for better MPG!

    I think the real end is 323 and unknown about compression. Not able to test that myself. I will look into the lean thing. Thank You!
  15. Valveguy

    Need recommendation for a Carb for better MPG!

    OK, I get it. My expectations were probably a bit absurd.
  16. Valveguy

    Need recommendation for a Carb for better MPG!

    OK, I can appreciate that, thank you! Yes, it probably needs a tune up. I'm not a mechanic but I want to learn so I'll take any and all tune-up tips you might have. It was sitting for a while before I started driving it again. I had a 2brl 318 in an automatic Duster as a kid and could get 25-26...
  17. Valveguy

    Need recommendation for a Carb for better MPG!

    Highway driving, 55-60 only. No street.
  18. Valveguy

    Need recommendation for a Carb for better MPG!

    I have a 5-speed 72 Dodge Demon with a 340, Edelbrock 1406. Looking for possible recommendations for a carburetor that might give me better mpg. I've recently been able to drive as a simi-daily driver but it's hard to get much better than about 17 mpg driving like Miss Daisy! I would be happy...
  19. Valveguy

    Demon won't start

    I looked under the hood of my Demon and sure enough, I could tell the dual ballast resistor was shot. It looks like it's been there since 1972, is fairly loose and I can tell that something inside of it is broken. The connective wires were allso pretty loose so I tightened them and then tried...
  20. Valveguy

    Demon won't start

    After I get the ballast, would it be worth updating the coil or should I run it until it dies? Thanks again for all of that great insight!!
  21. Valveguy

    Demon won't start

    Your info is GOLD to me AJ! Thank You So Much!!
  22. Valveguy

    Demon won't start

    Sorry, that was stupid to not identify the engine. It's a 340, manual transmission. Had someone work on the engine a bit several years ago so I guess I'm confusing the points part with a different vehicle. Thank you for your reply!
  23. Valveguy

    Demon won't start

    I need some help getting my 72 Demon started. I'm not a mechanic but I'm trying to learn. Car had been running recently, battery is strong and it turns over great but won't pop off. When I was starting it this last week, it seemed like it was only wanting to start once I turned the key back...
  24. Valveguy

    [WANTED] 72 Demon Fuel Filler Tube

    I do now believe so but someone on here found one for me. Thank you.
  25. Valveguy

    Parts Interchange Manual

    This is Gold! Thank You So Much!!
  26. Valveguy

    Parts Interchange Manual

    What are FPM'S?
  27. Valveguy

    Parts Interchange Manual

    Helpful, Thank You!!
  28. Valveguy

    Parts Interchange Manual

    No problem, thank you so much for taking the time to do this. Tom
  29. Valveguy

    [WANTED] 72 Demon Fuel Filler Tube

    Where do I find that? Sorry.
  30. Valveguy

    [WANTED] 72 Demon Fuel Filler Tube

    Ok, never mind, I see your photo now. Would you take $45 plus shipping?
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