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Re: How can I fix my Speedo?
[Re: cbusters]
#1245465
06/04/12 07:42 PM
06/04/12 07:42 PM
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Joined: Feb 2010
Posts: 2,806
Northern NJ
StukaJU87
master
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master
Joined: Feb 2010
Posts: 2,806
Northern NJ
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start here
[edit] see you are a 4 spd.
Last edited by StukaJU87; 06/04/12 07:44 PM.
Scott
1969 Super Bee, 383/4 speed
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Re: How can I fix my Speedo?
[Re: cbusters]
#1245466
06/04/12 07:46 PM
06/04/12 07:46 PM
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Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY
Truck Nut
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Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
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You need the diameter of the tire and gear ratio to find out which gear you need. Look in the tech archives. IIRC theres a chart there that will help you. Being a 3.73 is not a Mopar factory ratio you may need to compromise by picking a a gear choice to get close to what you need. Id suggest a gear that makes the speedo register a tad fast for a MPH cushin on the highway..
I am truckless..
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Re: How can I fix my Speedo?
[Re: cbusters]
#1245468
06/04/12 08:35 PM
06/04/12 08:35 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I laid a piece of flat stock across one of my rear tires & measured the ACTUAL dia then used the chart in the archives along with my rear gear ratio to pick the right speedo gear. at the interstate mile markers I went exactly a mile on my odo (go 5 miles) which tells me my selection was correct and my speedo read correct at a roadside digital MPH sign which told me the magnetic gismo in the speedo head was already calibrated correct. I have been advised that rollout feet/inches is more accurate but dia worked for me.
live every 24 hour block of time like it's your last day on earth
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