C6 Speedometer gear question??? - Ford Truck Enthusiasts Forums



1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

C6 Speedometer gear question???

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 05-19-2011, 12:18 AM
Rawkauf Rawkauf is offline
New User
Thread Starter
 
Join Date: Apr 2011
Posts: 1
Rawkauf is starting off with a positive reputation.
C6 Speedometer gear question???

I recently purchased a 1958 F100 with a 1970 351C and C6 trans. I installed a speedometer cable in place of the broken one. The speedometer works well but is reading about 20 mph too fast (80) at approx 60 mph. The current gear is 16 tooth blue/green plastic and is about 2 inches long. I ordered a replacement 20 gear black plastic gear and it is only approx. 1 inch long. It does not work, the gear seems not to make contact. Any ideas? Thanks
Reply With Quote
  #2  
Old 05-19-2011, 04:00 AM
superman64011's Avatar
superman64011 superman64011 is offline
Senior User
 
Join Date: Feb 2004
Posts: 298
superman64011 is starting off with a positive reputation.
Not sure what gear ratio on mine is but mine is about 5 mph off and mine is an orangish color. Someone will post soon with a better answer
Reply With Quote
  #3  
Old 05-19-2011, 06:52 AM
sdetweil's Avatar
sdetweil sdetweil is offline
Post Fiend
 
Join Date: Nov 2000
Location: Liberty Hill, tx
Posts: 11,036
sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.
sounds like the gear isn't seated completely..

the contact point is up high on the gear, close to the cable.

Sam
Attached Images
 
Reply With Quote
  #4  
Old 05-19-2011, 11:56 AM
NumberDummy's Avatar
NumberDummy NumberDummy is offline
Ford Parts Specialist
 
Join Date: Nov 2006
Location: Agoura Hills, CA
Posts: 67,554
NumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputation
The correct 20T driven speedo gear is: C8SZ-17271-B / Orange / Available from Ford / MSRP: $3.75 // FTE sponsor PARTSGUYED.COM price: $2.70.

IMO, a 20T gear is one tooth too many for a speedo that is reading 20 MPH fast.

C7VY-17271-A .. 19T Driven Speedo Gear / Tan / Available from Ford / MSRP: $2.98 // PARTSGUYED.COM price: $2.15.
Reply With Quote
  #5  
Old 05-19-2011, 04:55 PM
sdetweil's Avatar
sdetweil sdetweil is offline
Post Fiend
 
Join Date: Nov 2000
Location: Liberty Hill, tx
Posts: 11,036
sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.sdetweil has a spectacular reputation.
here's a good calculator

Speedometer Gear Calculator

Sam
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Speedometer Adjustment darren_palms 1973 - 1979 F-100 & Larger F-Series Trucks 3 07-15-2014 12:02 AM
Speedometer Adaapter tpdaniels 1967 - 1972 F-100 & Larger F-Series Trucks 2 12-26-2013 10:41 AM
speedometer gear question littsen1 1961 - 1966 F-100 & Larger F-Series Trucks 9 11-01-2013 06:27 PM
any sources for cast iron speedometer driven gears? SocialDistortionFan 1961 - 1966 F-100 & Larger F-Series Trucks 7 10-01-2013 01:20 AM
1997 F-150 Speedometer problems mekanikman_402 1997 - 2003 F150 6 04-21-2012 04:02 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1968, 97, c6, e350, econoline, f100, ford, gear, gears, housing, pics, speedo, speedometer, teeth, transmission

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 05:21 AM.