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Are the speedo cables normally connected to the transfer case on 4wd and on the tranny on 2wd? Also, does it matter on a 4wd? A PO swapped a 1973 T18 in my 72 f250 4wd and had the speedo to the trans. Can this stay this way or is there a reason for going to the TC?
This is how I got it, looks like some homemade stuff. Even the way the TC linkage hooks up to the rear of the trans.
The speedo still works, doesn't it? I would leave it until you decide to change from the Dana 24 to a NP 205, or other TC. The T-18 was never used by 4wd's until 1979, and only in front of married 205's. The tail housing on the 2wd T-18 doesn't have the required bosses to mount the TC shifter, so the PO garbled up something to make it work. Only the 4wd 435 tail housing will mount the TC shifter properly.
I dont know whether or not the speedo works. This was not a running truck when I got it. Did the np435 have no place for mounting the speedo cable and was this why it was attached at the TC? The T18 transmission was the only surprise on the truck that I found out later on. I might start keeping an eye out for a np435 but as long as this all works it will be good enough for now. I would like it to be more proper though as opposed to being rigged to work.
The 2wd NP 435 does have a speedo connection on the tail housing, but the 4wd does not most likely due to the TC shifter linkage and mounts on both sides. My 70 CC had its' 4wd 435 replaced with a 2wd one by the PO, so the TC linkage just hangs due to no mounting bosses.
Thanks for the help. Im definitely leaving it all as is for now. As soon as I get my cab back on the truck, I can start seeing how things are going to work out as they go back on the truck.
The speedometer drive is in the transfer case on four-wheel/allwheel drive because the transfer case can alter the final drive ratio (in the case of low range, since high range is typically 1:1)
