speedometer is reading wrong-changed gears

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May 14, 2013 | 12:43 AM

firebirdman350

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speedometer is reading wrong-changed gears

Hi everyone, i put 3:42 gears in, my speedometer is way off....anybody know what i need to do to get it to work right with my new gears? The cheapest route if possible...i dont know what the stock gears are, i did this along time ago....1998 Trans Am LS-1...thanks

May 14, 2013 | 03:06 AM

99Bluz28

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You need to take it to a tuner an get it tuned for the change to different gears.

May 14, 2013 | 04:50 AM

mconway68w

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^This. You can get a hand held or go to an in person tuner (recommended). Either way, you're looking at $3-400 bucks. Going to a tuner will open up some horsepower and he will.be your best friend later on down the road when you upgrade further.

May 14, 2013 | 04:52 AM

mconway68w

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Your stock gears were probably 3:23. Possibly even 2:73 if you have an auto.

May 14, 2013 | 01:05 PM

99Bluz28

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Quote:

Originally Posted by mconway68w

Now if he's not getting a full tune and just having it adjusted for the gears then it'll be a lot less, but if the budget permits then a full tune is the way to go.

May 14, 2013 | 03:43 PM

VandykeT/A

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You could do a mail order tune through frost. Its like 150 bucks I think for bolt ons. If you've got a local tuner you could have them do it.

May 15, 2013 | 07:25 PM

themealonwheels

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You could get a Dakota Digital speedo signal converter, ~$95 and wire it inline. I have one, had it for 2yrs and no issues... Plus it's not a one time use. I've adjusted speedo at least three times... Once for different tire size, once for trans signal (T56 magnum uses a different signal) and once for rear gear change.

Tune, psh....