2003-04 Mach 1 Registry Owners Club - Speedometer issues with 410 gears

2003-04 Mach 1 Registry Owners Club (http://www.mach1registry.org/forums/index.php)

- Engine & Drivetrain (Including trans & rear axles) (http://www.mach1registry.org/forums/forumdisplay.php?f=64)

- - Speedometer issues with 410 gears (http://www.mach1registry.org/forums/showthread.php?t=135913)

DR6M1

04-26-2017 11:35 AM

Speedometer issues with 410 gears

What's up guys wondering if someone can help me out with this issue I'm having. So I installed 410 gears and now my speedometer reads a lot higher mph. For example I'm going 70 and it reads about 82mph. How can I fix that? I know you change the speedometer gear but which one do we need for the tr3650. Thanks for the help!

311-420

04-26-2017 11:44 AM

Re: Speedometer issues with 410 gears

There's no gear to change. These cars have become old school, but they're not that old school.

That's something you adjust for in the computer. Do you have a flasher?

j rick kirby

04-26-2017 11:54 AM

Re: Speedometer issues with 410 gears

Ford Racing Speed Dial from LMR is what I did.

DR6M1

04-27-2017 12:36 AM

Re: Speedometer issues with 410 gears

I do have a set tuner can I do t with that? Ford racing speed dial is that just a direct bolt on and it calibrates on its own or how does that work?

j rick kirby

04-27-2017 12:13 PM

Re: Speedometer issues with 410 gears

Quote:

Originally Posted by DR6M1 (Post 1625935)

I do have a set tuner can I do t with that? Ford racing speed dial is that just a direct bolt on and it calibrates on its own or how does that work?

You have to tell it what gears you have. I checked it against a GPS and it is quite accurate.

311-420

04-27-2017 12:41 PM

Re: Speedometer issues with 410 gears

Quote:

Originally Posted by DR6M1 (Post 1625935)

I do have a set tuner can I do t with that?

An sct tuner? Yes that will do it.

DR6M1

05-03-2017 01:53 PM

Re: Speedometer issues with 410 gears

I can do it from my sct or do I need my tuner to do it?

01yellerCobra

05-03-2017 02:15 PM

Quote:

Originally Posted by DR6M1 (Post 1626133)

I can do it from my sct or do I need my tuner to do it?

Your tuner might have left that option open. If they didn't you'll need an updated tune.

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