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  1. Early Bird

    Bad Vibration at 2500 RPM and above

    1969 383 Magnum. I am having a bad vibration at 2500 RPM it seems to be mid car no noise however just vibration. This car originally had an automatic transmission in it and now has a 4 speed and has had the vibration since it was purchased by my nephew. I have verified the harmonic balancer is...
  2. Early Bird

    Im a new roadrunner owner and need with decoding my body code plate

    I have attached a picture but here is the numbers C55 M21 M25 R11 END 96E MX6 X9 627 418469 E63 D32 RM23 H9G 300979 I think under stand the serial number: R= Roadrunner or Satilite M= Medium priced 23= 2 Door Hard Top H= 383 High Performance 9= 1969 G= Made in St. Louis any...
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