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Good Sunday Morning!
Probably an annoying question, but I have a 78 F150 4x4 regular cab, 351M C6. The truck came with cruise but it was toast and I don't need it so I want to bypass. The top half of the speedo cable is missing and I see there are a bunch of different lengths.....can anyone tell me which is a usable length in this case? Just C6 to speedo.
If you can not get the one to go from the cruise control round piece (under the hood with a 2 wires sticking out it) then here is a way to research just a whole cable. Nice truck BTW.
First, when referring to the Ford parts catalog page numbers, it's better to use the actual page number, not the .pdf number. In this case the page you noted as 3017, on my computer is page 869. The actual page is sheetmetal section 400 page 4. These are the numbers at the top of the illustrated page. As you probably know, the "part number" shown in the illustration isn't the complete number but the basic number. For example ALL Ford distributors in the illustrations are listed as 12127. This is the basic number. To get the correct part number you need to look up your specific application in the text section of the catalog and that will get you the full part number with the correct suffix and prefix. As a "general" rule the prefix can be broken down into the first digit denotes decade (A=40's, B=50's, C=60's etc.) the second digit denotes year, the third digit denotes car line (A=passenger car, T=truck, S=Thunderbird, U=Econoline, etc.) The fourth digit is an engineering number. Then you have the basic part number. Last is the suffix this finalizes, so to speak, the complete part number for the particular part. Ford is notorious for changing part numbers (mainly the suffix) when the most minor change takes place, usually involving how the part is packaged! This drives the guys behind the parts counter nuts. Using your tailgate example. The tailgate basic number is 40700, however, there are two different tailgates, one for the styleside bed (body 99) and one for the flareside (body 83). When you go to the 40700 section of the text catalog (sheetmetal section 400, page 2) you'll see there are two part numbers, D8TZ-8340700-A. This is the flareside tailgate. It's noted in the description: 73/ (The "/" basically means up. Read that as 1973 and up). F100/350 (83). The second part number is the correct one for your truck D7TZ-9940700-A The description reads 73/ F100-/350 (99).
Looking at it, I'm seeing there is no way to guess...I'll pull it apart when it gets above 30 degrees : ) I'll get by with the phone/gps/speedometer app fpr now
I appreciate the help though. That book will come in handy I'm sure
LP
I had kind of the same problem, the "shorty" cable up top went bad and at the time (2015) I couldn't find a replacement so I just bought a non-cruise control cable the runs from my trans/transfer case to back of speedometer.
I wasn't sure at the time why they had 3 different lengths (76", 95" and 118') but guessed 2WD vs 4WD AND manual vs auto so I got tthe 118" since I was a C6/4WD and it was right one.
