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Hot Rods Speedo problem after replacing Richmond 5 sp with C4

Discussion in 'The Hokey Ass Message Board' started by L. Eckart, Mar 5, 2024.

  1. L. Eckart
    Joined: Jul 8, 2005
    Posts: 641

    L. Eckart
    ALLIANCE MEMBER

    I changed the Richmond 5 speed to a C4 in my 32 roadster. The Richmond speedo cable connection was on the passenger side and the C4 is on the drivers side. I bought a new drive gear and adapter for the C4 (trying to use the original speedo cable) but the speedo does not work. I'm thinking the end of the original cable is too small for the adapter and therefore not turning? Is that a logical explanation or could it be something else? Do they make a cable end fitting to correct? Im trying to not run a new cable because the car is upholstered and it will be a real fight to route ( plus I'm and old guy). Any thoughts?
     
  2. BamaMav
    Joined: Jun 19, 2011
    Posts: 6,969

    BamaMav
    Member Emeritus
    from Berry, AL

    Could the gear be turning backwards since it's now on the other side of the transmission?
     
  3. L. Eckart
    Joined: Jul 8, 2005
    Posts: 641

    L. Eckart
    ALLIANCE MEMBER

    I believe the drive gears are different between the manual and automatic. I bought a new gear for the C4 but I'll check it. Thanks for the reply.
     
  4. BJR
    Joined: Mar 11, 2005
    Posts: 11,047

    BJR
    Member

    Look on line or at a parts store at a c4 cable end and a Richmond speed cable and see if they are the same. If not have a custom cable made.
     
  5. Custom cables are made here, @e1956v
     
  6. e1956v
    Joined: Sep 29, 2009
    Posts: 2,547

    e1956v
    Alliance Vendor

    Ford speedometer driven gear pitch is opposite the side it comes in on. Left side the gear should have a right hand pitch, if it comes in on the right side it should be a left hand pitch.
    Check with nipple pointing away from you, the gears are usually marked with R or L, IE
    16R or 16L.
    If you haven’t run it much it probably won’t have damaged the drive gear inside.
    As for the cable the square size should be from
    .100 to .104 some import cables are undersized and I’ve seen square sizes as small as .97 which will spin in a gear and not work.
     
    Last edited: Mar 6, 2024
    pprather likes this.
  7. L. Eckart
    Joined: Jul 8, 2005
    Posts: 641

    L. Eckart
    ALLIANCE MEMBER

    Thanks for the replies. I'll check it out tomorrow.
     

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