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gear ratios

Discussion in 'Intermediate CJ-5/6/7/8' started by bobcat, May 8, 2011.

  1. bobcat

    bobcat Member

    what are the chances that the dana 30 i found yesterday has 3.73's in it? bob
     
  2. Pack Rat

    Pack Rat Old Timer

    I've bought/inherited/picked up for free six or seven CJ D30's over the last five years and I've had a 100% fail rate so far :cry:. All but one were 3.54, that was a lincoln locked 4.10.
     
  3. bobcat

    bobcat Member

    this one had a automatic transmission steering column in it, i was thinking quadratrac. not the right ratio would be a dealbreaker
     
  4. nickmil

    nickmil In mothballs.

    So check it before purchase. Turn the yoke. If both axles/hubs turn 1 turn and the pinion yoke turns 3 3/4 turns that would be 3.73. Maybe Timgr or someone can verify but I believe Intermediates had either 3.73 or 4.27's as an option and '76 and newer had 3.54 or 4.10 as an option. Although I have seen some real late CJ's with 2.73 from the factory.
     
  5. HeavyIron

    HeavyIron Member 2024 Sponsor

    3.73s have a tag on them that says 41 - 11.
    I've picked up two D30s over the last few years and they are both 3.73s
     
  6. bobcat

    bobcat Member

    good to hear from you nick. i was going to check it anyway but if the 3.73 didn't come with an auto, it wouldn't be any need to drive the 40 miles at $3.89/gal. bob
     
  7. nwedgar

    nwedgar Now with TBI!

    Possible to ask the seller to double check the stamping on the ring gear and shoot you a pic?

    I've done it for buyers before.
     
  8. nickmil

    nickmil In mothballs.

    I hear ya. You might double check with the seller. Never know if the gears have been switched. If they aren't willing to check the gears then in my book they don't want to sell too bad.
    Hope all is well.