Speedometer gears
Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
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.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
That's prolly why my Ford slide didn't even mention it. Section A72, page 1. jan 75 issue. Glad you remembered it.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
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!
New User
Joined: Oct 2016
Posts: 2
Likes: 0
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
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
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
Thread Starter
|
Freshman User
Joined: Nov 2007
Posts: 40
Likes: 0
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.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
1973 and later C4/C6, the DRIVE gear is made as part of the output shaft.
New User
Joined: Oct 2016
Posts: 2
Likes: 0
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
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
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.
Thread
Thread Starter
Forum
Replies
Last Post
Glaser67
1987 - 1996 F150 & Larger F-Series Trucks
2
Jan 20, 2018 06:52 PM
wharthog
1987 - 1996 F150 & Larger F-Series Trucks
2
Dec 31, 2016 06:22 PM
Don Vito
1948 - 1956 F1, F100 & Larger F-Series Trucks
3
Nov 29, 2016 08:44 AM
jvmcc
1948 - 1956 F1, F100 & Larger F-Series Trucks
15
Sep 26, 2016 12:47 PM
