Speedometer gears
Conversely, the wrecking yard '69 F100 I just pulled a headliner out of, to put in my '69 F100 Ranger, still had its steering column/gear selector lever in it. --I could go take a look at it, to see what kind of condition it's in. --and now that I think about it, I know where a '68 F250 CS is that I'm pretty sure has a gear selector lever in it too.
That's prolly why my Ford slide didn't even mention it. Section A72, page 1. jan 75 issue. Glad you remembered it.
For those unaware: FoMoCo is notorious for updating/replacing 10's of 1000's of part numbers EVERY
YEAR .. more often than women change their minds!
Tim Haslett
I have a 1972 ford f100 in my transmission shop. It has a bolt on rear yoke setup. The speedo drive gear was missing on the output shaft. I ordered an 8j17285 drive gear and a 8j17288 spacer and installed. The speedo still doesn't work. the cable and driven gears are all new. speedo cluster needle moves when turning the brass button where cable slides into it. I pulled the cable back out of the extension housing and using a mirror and flashlight, the speedo drive gear doesn't protrude into the opening. if I lay a 6 inch rule into the hole the drive gear sits even or slightly lower than the bullet hole in the extension housing. Reading on here the steel gear is only used till 1971. is there a taller steel gear? I am confused a little here. Thanks in advance for any help. Tim Haslett
I have a 1972 ford f100 in my transmission shop. It has a bolt on rear yoke setup. The speedo drive gear was missing on the output shaft. I ordered an 8j17285
drive gear and a 8j17288 spacer and installed. The speedo still doesn't work. the cable and driven gears are all new. speedo cluster needle moves when turning the brass button where cable slides into it. I pulled the cable back out of the extension housing and using a mirror and flashlight, the speedo drive gear doesn't protrude into the opening. if I lay a 6 inch rule into the hole the drive gear sits even or slightly lower than the bullet hole in the extension housing. Reading on here the steel gear is only used till 1971. is there a taller steel gear? I am confused a little here. Thanks in advance for any help. Tim Haslett
drive gear and a 8j17288 spacer and installed. The speedo still doesn't work. the cable and driven gears are all new. speedo cluster needle moves when turning the brass button where cable slides into it. I pulled the cable back out of the extension housing and using a mirror and flashlight, the speedo drive gear doesn't protrude into the opening. if I lay a 6 inch rule into the hole the drive gear sits even or slightly lower than the bullet hole in the extension housing. Reading on here the steel gear is only used till 1971. is there a taller steel gear? I am confused a little here. Thanks in advance for any help. Tim Haslett
SOME C-6'S
Some C-6's used the spacer, some did not. If the gear turns freely when the output shaft is assembled without the spacer, you need it. NumberDummy will give you the correct numbers for the pieces.
1973 and later C4/C6, the DRIVE gear is made as part of the output shaft.
thanks guys, it has a c6 transmission with bolt on yoke, no drive gear made into the shaft. truck is 1972, trans is a 1970. short extension housing with bolt on yoke. thanks. after looking at a parts book a page or so back the page shows an extension housing# 7a039 and a speedo housing #7085. this c6 has a newer aluminum 1 piece housing with a slide in cable with a small bracket on speedo cable and a 1/4 inch bolt to hold it in. thanks again for your help.
Last edited by timhaslett; Oct 19, 2016 at 11:52 AM. Reason: more information
thanks guys, it has a c6 transmission with bolt on yoke, no drive gear made into the shaft. truck is 1972, trans is a 1970. short extension housing with bolt on yoke. thanks. after looking at a parts book a page or so back the page shows an extension housing# 7a039 and a speedo housing #7085. this c6 has a newer aluminum 1 piece housing with a slide in cable with a small bracket on speedo cable and a 1/4 inch bolt to hold it in. thanks again for your help.
Warranty Plate riveted to the left door face below the latch.
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