88blueK5
Newbie
i just swapped in 4:56 gears in my 1988 k5 w 700R4 & 33" tires, anyone know how i go about getting my speedo back to normal or close to normal??
CK5
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speedo calibration for gear swap
- Thread starter 88blueK5
- Start date
trailblazer86
1/2 ton status
Send me your e-mail I have the formulae that you are looking for.
trailblazer86
1/2 ton status
Speedo Gear Calculator
Try this link. It is a great speedo calculator.
Chances are that your drive gear has 15 teeth.
Now how to get the dealer to work on this is another Question. You may need to purchase a few gears to get the speed right on.
A GPS is great for checking your speedo.
Try this link. It is a great speedo calculator.
Chances are that your drive gear has 15 teeth.
Now how to get the dealer to work on this is another Question. You may need to purchase a few gears to get the speed right on.
A GPS is great for checking your speedo.
jacksprat1599
Registered Member
are thes gears difficult to change?Is it a DYI mod.
trailblazer86
1/2 ton status
This is a very easy repair/mod.
The only thing that may give you any trouble is the unit that holds the gear.
(I can't remember what it is called. Brain fart I guess).
Sometimes you will have to buy a different holder. This is also very easy and straight forward to replace. The parts person should know what you are talking about.
Just figure out what gear you need. This will let you know what holder you need. The installation is straight forward.
Be carefull and you won't even get any fluid on your fingers.
The only thing that may give you any trouble is the unit that holds the gear.
(I can't remember what it is called. Brain fart I guess).
Sometimes you will have to buy a different holder. This is also very easy and straight forward to replace. The parts person should know what you are talking about.
Just figure out what gear you need. This will let you know what holder you need. The installation is straight forward.
Be carefull and you won't even get any fluid on your fingers.
Check out bowtie overdrive They've got the calculator and the gears.
Rick
P.S. My '88 had 3.42's in it originally and I've got the same setup as you now, and my speedo is about 15 mph faster than my actual speed right now.
Rick
P.S. My '88 had 3.42's in it originally and I've got the same setup as you now, and my speedo is about 15 mph faster than my actual speed right now.
