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  1. J

    Transmission or rear diff?

    Hi all. Have a 1983 c30 dually stock with 350 and 4 speed manual trans. Question i have is it has the typical granny gear ( shift from 1st to second almost as soon as moving) and doesn't seem to get up to 70mph with out high rpms. Which would help the most to get better speed out of this...
  2. J

    1983 c30 dually dual tank efi questions

    Hey all. Have a few questions. Recently bought a 83 c30 originally with dual tanks. (Only had passenger side when I bought it). I'm looking at adding the drivers side tank and going from carb to the holley sniper 2 efi. I don't believe is has the charcoal cannister anymore so should I change...

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