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  1. challenger

    Timing and vacuum questions - 440 TNT

    I feel like my car is lacking in the acceleration department. It runs very well otherwise. It has an Edelbrock 1406 600 CFM Performer carburetor and a Mopar performance distributor. The vacuum advance is hooked up and functions. It may advance the distributor with a little more vacuum than it...
  2. challenger

    Distributor curve advice needed - 1970 300 Vert

    I have a 70 300 convertible that I've posted about here a few times. I have had a long time struggle with a very faint pinging sound while cruising under light throttle. Long story short is that I think I may have fixed the problems that were causing the issue which, I hope anyway, was caused by...
  3. challenger

    Blew up mufflers. 70 440 HP 300

    Several years ago I changed the dizzy on my 300. I f'ed up the install and filled my mufflers with gas fumes. Then I filled them with a spark and they blew up :). Very fewiles have been put on the car since doing this and I lived with it. Now I'm driving it more and the tinny noise bothers me. I...
  4. challenger

    Speedometer cable for 1970 300?

    Can someone please offer tell me how to find a cable for this vehicle please? I went to the apt website and they don't list one for my car. Thanks
  5. challenger

    recommended timing curve for 1970 300 vert

    I ordered springs for the Mopar/Mallory YH style distributor. I am trying to lower the total timing including vacuum advance. I've been getting detonation at highway cruise speed. The distributor is a Mallory with a 9" canister which gives over 20" vacuum advance. The distributor mechanical...
  6. challenger

    Electronic ignition "kit" distributor question-vacuum advance

    I am still chasing my tail with the Edelbrock 1411 carburetor on my 1970 300 vert. The issues I have are a very slight stumble from a stop and while cruising and letting off & getting back on the throttle and a detonation at light throtlle while cruising. I completely disassembled the carburetor...
  7. challenger

    1970 300 speedo not working

    I restored the instrument cluster on my 300 a couple of years ago & have driven it very little since. Recently I've been driving it trying to figure out some problems and I noticed the speedometer isn't*working. The cable/housing/clip are securely attached to the speedo. Can I remove the...
  8. challenger

    1970 300 with Edelbrock 1411-light throttle knock

    I am working on my wife's 300 convertible. She hardly ever drives it and several months go by between cruises. About every time I end up having one issue or another due to the car sitting. This time I had to drain the fuel out of it because it would stumble & stall when trying to start from a...
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