Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

speedo gear

Thread Tools
 
Search this Thread
 
Old Feb 21, 2017 | 06:11 PM
  #1  
PAwhiteboy's Avatar
PAwhiteboy
Thread Starter
|
Junior User
Joined: Aug 2010
Posts: 90
Likes: 0
speedo gear

what tooth count do I need to correct my speedo? 36.5"-37" tires

Also, where is a good source for a speedo cable? The one I got from napa has been leaking from the crimp (t-case side) since new.
 
Reply
Old Feb 21, 2017 | 06:20 PM
  #2  
Fordworth's Avatar
Fordworth
Laughing Gas
15 Year Member
Joined: Dec 2007
Posts: 1,052
Likes: 2
From: Alvarado, TX
Drive gear tooth count (most likely 7) and rear gear ratio are needed the figure it out. Then you can plug the numbers into an online calculator. I'll post a link if I can find the one I've used in the past.

As far as the cable goes, I got one from Oreilly about 10 years ago and it's been just fine.
 
Reply
Old Feb 21, 2017 | 06:36 PM
  #3  
Fordworth's Avatar
Fordworth
Laughing Gas
15 Year Member
Joined: Dec 2007
Posts: 1,052
Likes: 2
From: Alvarado, TX
http://www.bgsoflex.com/speedo1.html

The speedo rev/mile is 1000. Remember that the gear inside the case is the drive gear and the one on the cable is the driven gear.
 
Reply
Old Feb 22, 2017 | 12:12 PM
  #4  
JakeHan's Avatar
JakeHan
Elder User
Joined: Jun 2005
Posts: 542
Likes: 1
A big piece of the GOOD heat shrink with the glue on the inside works great for sealing tach and speedo cables - but you might have to pull it all the way out and slide it over the speedo end. Rubber electricians tape also works (wildlands fire engines can't have any "leaks" to pass inspection, had a few like this....)
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
264WSM
1987 - 1996 F150 & Larger F-Series Trucks
2
Jul 18, 2015 04:23 PM
Squarebody
1987 - 1996 F150 & Larger F-Series Trucks
4
Oct 22, 2013 12:16 AM
agaristo77
1978 - 1996 Big Bronco
2
May 3, 2012 08:04 AM
Pappys53
1948 - 1956 F1, F100 & Larger F-Series Trucks
2
Sep 23, 2010 07:43 PM




All times are GMT -5. The time now is 06:27 PM.

story-0
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-1
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-2
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-3
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-4
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-5
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-6
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-7
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-8
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-9
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE