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14bolt FF?

Discussion in 'The Garage' started by Tweetysuarus, Jul 14, 2002.

  1. Tweetysuarus

    Tweetysuarus 1/2 ton status

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    Is there a difference between a 14bolt ff dually & reg. axle? /forums/images/icons/confused.gif I am finding mass 14bolt ff duallies everywhere only a few regular 14bolt ff. /forums/images/icons/crazy.gif
    I've done a search and came with nutin. /forums/images/icons/crazy.gif
    Thanx,
    Bill C /forums/images/icons/cool.gif /forums/images/icons/grin.gif
     
  2. zcarczar

    zcarczar 1/2 ton status

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    I think the duallies are narrower than the SRW ones
     
  3. Pure Insanity

    Pure Insanity 1/2 ton status

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    The difference is the shock mounts and spring pads. The axles themselves are the same width, unless you get a van rear, they are wider.
     
  4. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Spring pads and shock mounts are NOT the only difference between dually 14bolt's and single rear wheel 14bolt's. The dually 14b's ARE narrower. I was just looking at one today. They have to be narrower to offset the extra length of the added tire. They are quite a bit narrower. /forums/images/icons/grin.gif /forums/images/icons/grin.gif /forums/images/icons/wink.gif /forums/images/icons/wink.gif
     
  5. Pure Insanity

    Pure Insanity 1/2 ton status

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    I guess I am wrong then. But if they are narrower, why add the fenders. If you have compared them Ill take your word for it. I thought the only difference was the pads and brackets.
     
  6. thatK30guy

    thatK30guy 1 ton status Premium Member

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    The dually rears that were under a truck with a regular bed and wider fenders used the D70 axle, which is wider than any axle, including the front.

    14FF dually axles are narrower, but these are under the cab-and-chassis model trucks. These are basically made and sold as a truck with no bed. They are meant for utility boxes, flat beds, etc.
     
  7. Pure Insanity

    Pure Insanity 1/2 ton status

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    My dads dually has a 14 under it. Its a late 70s.

    My buds 2wd 89 excab dually had a 70 under it and yeah it was wider by quite a bit. We were told that they narrowed them in 90 or so. We discovered the extra width when we dropped it 7 in. in the rear. The tires didnt quite fit in the fenders anymore. /forums/images/icons/blush.gif

    BTW Wes, I have access to a 70 rear, I was thinking about snagging it for a better gear selection than a 14. Whats it worth? Or should I stay w/ the 14 that I already have?
     
  8. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Yo dude, I didn't mean to come off so...cocky. lol...Sorry 'bout that. /forums/images/icons/grin.gif /forums/images/icons/smirk.gif /forums/images/icons/crazy.gif
     
  9. Pure Insanity

    Pure Insanity 1/2 ton status

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    No problem. I hate to be wrong, /forums/images/icons/blush.gif but when I am I will nut up and admit it. I really didnt think that was harsh. /forums/images/icons/wink.gif
     
  10. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color="blue">Dually rears are 63" WMS to WMS, the single wheel 14s are 67" and the vans are 69" I think
     
  11. thatK30guy

    thatK30guy 1 ton status Premium Member

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    And the dually D70 rear is in the ballpark of 75". /forums/images/icons/wink.gif
     
  12. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Steve, depends on if this D70 is the wide dually axle. They have a WMS to WMS of around 75". /forums/images/icons/shocked.gif This would make the rear tires flare way out more than the front axle. /forums/images/icons/tongue.gif

    Unless you can get spacers for the front axle to flare the tires out to match the D70, I would stick with the 14FF. /forums/images/icons/wink.gif
     
  13. Pure Insanity

    Pure Insanity 1/2 ton status

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    Thanx Wes. Ill stick w/ the 14 then.
     
  14. BigMac

    BigMac 1/2 ton status

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    I was at Pick a Part in Newark last Saturday and found a couple 14"s.

    Im looking for one with disks... so I'll have less to chase down. I saw at least 3 on chevy pickups......

    How far you want to drive?
     

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