Speedometer cable gear

[29abone]

 Hello to everyone.  Been awhile since I last posted.  I am having trouble getting my speedometer to work on my 56 F100, 312, 57 car Fordomatic.  Replaced the speedo head with a repro, installed a new cable and gear, and it doesn't seem to mesh with the gear on the trans.  Mech removed tailshaft  to see if gear was tight,  it was. Does anyone have any suggestions?

[enjenjo]

Ford used both a left hand and right hand helix driven gear in 1957. Is your speedometer drive above or below the tailshaft? It sounds like you need the opposite helix.

While you are here, you have a Jag front end in that truck, correct? If so I need to pick your brain.

[29abone]

Hi Frank, the speed0 cable goes over the mainshaft.  We did not check the helix though.  Does anyone know the correct part number of the mainshaft drive gear?  

My truck still has the dropped solid axle.  I have given the Jag front end some thought and if you have a question, maybe I can answer.

  1  You need a rear sump oil pan
  2  Since the frame will not fit in to the c'mbr, cut a large longitudinal notch in the c'mbr on each side and box for strengrh.
       Drop the frame into the notches and mount as factory

I was going to make a frame mock-up out of 2 x 6's to work with.  Try making a mock-up and set it on the c'mbr and you'll see what I mean

I still have an XKE and An X6 front end.  I also have an XJ12 rear end.  I would sell all of them.

[enjenjo]

I need the distance from the bottom of the crossmember to the ground installed so I can figure out the mounting in another project I am looking at later this year. I might be interested in the suspension parts if the price is right. You can PM me with the details.

Google pre-59 Fordomatic speedometer gears and you can get some part numbers. If the helix is wrong, it eats the teeth on the driven gear.

[enjenjo]

Sent you a message.