Speed-o correction made easy

[bm02tj]

In my 4X4 mag they show a unit by California Performance Transmission that will correct your speedo
You give them your speedo reading at 50 MPH (using GPS) and they gear it to correct

 

[747mopar]

Or you can do what I did, GPS operated Electronic Speedo. Love it!!!! hook it up and forget it, no more recalibrating or anything else and always within 1 mph. Downside is obvious, you have to have an Electronic Speedo and they can loose signal but that seams to be almost never so far.

 

[kb67mopar]

Or you can do what I did, GPS operated Electronic Speedo. Love it!!!! hook it up and forget it, no more recalibrating or anything else and always within 1 mph. Downside is obvious, you have to have an Electronic Speedo and they can loose signal but that seams to be almost never so far.

I love mine too! I haven't had as much test time as you though.

 

[Badvert65]

I have an app on my iphone that is a speedometer. It seems to be pretty accurate. (more so than my OE 65 Belvedere speedo--usually +/- 15-20 mph at 60)

 

[old_skool]

speedo? SPEEDO?? we don't need no stinkin speedo!

 

[Cranky]

And sure ain't about to wear one....even if it is electronic!

 

[old_skool]

And sure ain't about to wear one....even if it is electronic!

:sFun_doh2::comp26:

 

[wannadrag]

I have an app on my iphone that is a speedometer. It seems to be pretty accurate. (more so than my OE 65 Belvedere speedo--usually +/- 15-20 mph at 60)

X2

 

[kb67mopar]

And sure ain't about to wear one....even if it is electronic!

keep your secret toys out of this! :chain saw::alien_probe::whip::3some:

 

[HT413]

Sound like a great solution (not cranky's) but boy will that drive a future owner NUTS. I can just imagine the cursing after a gear swap as they take it for a test ride with what they think is the right speedo gear.

 

[slepr1]

Or you can do what I did, GPS operated Electronic Speedo. Love it!!!! hook it up and forget it, no more recalibrating or anything else and always within 1 mph. Downside is obvious, you have to have an Electronic Speedo and they can loose signal but that seams to be almost never so far.

Where did you mount the antenna/satellite receiver gizmo thing to? I've been looking at them but stuck on mounting locations.

 

[TekHousE]

And sure ain't about to wear one....even if it is electronic!

ESPECIALLY if it is electronic! Shocking! ;)

 

[kb67mopar]

Where did you mount the antenna/satellite receiver gizmo thing to? I've been looking at them but stuck on mounting locations.

Mine is sitting on the dash up near the windshield right now. I haven't permanently fixed it yet but I plan to come up through the speaker grill with a little notch and use double sided tape to stick it to the dash in the center. The receiver is pretty small, only like 1" x 1"

You can see the receiver on the dash just sitting there right now.


www.speedhut.com

 

[Dako]

Hmm. Guess I'm just simple? I just used an online calculator...input my gear ratio and tire size, then looked at a speedo gear chart to determine what speedo gear I needed, then installed the correct gear into the transmission and I was done. Actual work took about 10 minutes. Verified the accuracy with a GPS (within 1 mph at all speeds). I think I paid $30 for the gear, online.

Note: On an auto trans you will lose some trans fluid when you remove the original gear. Just have the replacement (with new O-ring) ready to install prior to removal and the loss will be minimal. I think I lost (maybe) a pint, tops.

 

[kb67mopar]

Hmm. Guess I'm just simple? I just used an online calculator...input my gear ratio and tire size, then looked at a speedo gear chart to determine what speedo gear I needed, then installed the correct gear into the transmission and I was done. Actual work took about 10 minutes. Verified the accuracy with a GPS (within 1 mph at all speeds). I think I paid $30 for the gear, online.

Note: On an auto trans you will lose some trans fluid when you remove the original gear. Just have the replacement (with new O-ring) ready to install prior to removal and the loss will be minimal. I think I lost (maybe) a pint, tops.

Nah had my trans had a speed output I'd have gone that route too. I'm using a 2001 Dakota 5 speed that has no speed output or sensor.

 

[Dako]

Nah had my trans had a speed output I'd have gone that route too. I'm using a 2001 Dakota 5 speed that has no speed output or sensor.

Ahh, You are using the Hotrodder's Law: For every modification, there are (at least!) two other modifications that need to be made to get the 1st modification to work!

 

[tallhair]

And sure ain't about to wear one....even if it is electronic!

Epic Cranky!

 

[kb67mopar]

Ahh, You are using the Hotrodder's Law: For every modification, there are (at least!) two other modifications that need to be made to get the 1st modification to work!

I exemplify the LEAST in that statement....and by that I mean its way more than two haha.

 

[bm02tj]

I prefer to change the gear to the correct one but some are getting hard to find and expensive
so when I saw this I posted
If it helps one person my effort was not in vain