speedo gear

Jucostud · March 20th, 2008, 02:14 PM

So i put my new speedo gear in today because i went from 3:31's to 4:10's, and my speedo is still off. Did i do something wrong? I bought the white 23 tooth manual trans. 4:10 gear from steeda. I would say my speedo is about 10mph off. This thing is really pissing me off. Any clue?

MikeD05GT · March 20th, 2008, 03:03 PM

nope

Casper98GT · March 21st, 2008, 01:36 PM

it will never be 100%, you could try a speedcal to get it more accurate. but its mechanical so its never going to be exact.

Jucostud · March 22nd, 2008, 07:07 PM

Originally Posted by Casper98GT

it will never be 100%, you could try a speedcal to get it more accurate. but its mechanical so its never going to be exact.

If i pay money for something, i would like it to be a little more accurate than 10-15 off! Once the point of even selling them if they are wrong? Whats a speedcal?

MustangMatt96GT · March 22nd, 2008, 08:35 PM

Speed cal is sold by Dallas mustang. It takes the stock gear, and then minupluates the resistance on the VSS. That way it will correct for any gear ratio or tire profile.

HMUSN · March 22nd, 2008, 08:37 PM

juco.. you really need to add your 96-98 mustang in your sig man.. lol

I keep wanting to tell you " you don't have a speedo gear" or "don't worry about the whole ""PI non pi"" thing" lol

97GT4.6 · March 23rd, 2008, 03:40 AM

yea, matt told me that those gears aren't accurate because they work for 373's and 410's so theres some variation. I leave mine as is at ten over.

BlueStangGT · March 26th, 2008, 09:01 AM

There's no mechanical correction you can do on a 96-98 5-spd. car and be accurate with any gearset higher than 3.55 unless you replace the drive gear on the tailshaft housing inside the trans. The 23-tooth gear you put in there will shred, they always do, and yours won't be any different. The easiest solution is definitely the SpeedCal and it will be 100% accurate if installed correctly. Go back to your stock VSS gear and adjust the SpeedCal accordingly.

stanglifemike · March 26th, 2008, 03:10 PM

^^Welcome

BlueStangGT · March 26th, 2008, 08:27 PM

Thanks. drgnracin invited me a little over a year ago but I haven't checked in for quite some time. I've been up and down all possible sides of the speedo issue with my 98 car and thought I'd pass along what I'd learned.

March 20th, 2008, 02:14 PM	#1
Jucostud booooost'd 2007 Mustang Join Date: Nov 2006 Location: drink'n ur kool-aid Posts: 7,043 iTrader: 0 reviews	speedo gear So i put my new speedo gear in today because i went from 3:31's to 4:10's, and my speedo is still off. Did i do something wrong? I bought the white 23 tooth manual trans. 4:10 gear from steeda. I would say my speedo is about 10mph off. This thing is really pissing me off. Any clue? __________________ Jucostud's Official Build Thread 1988 LX HATCH 5.0 - FOR SALE $5,000 OBO 2007 vortech gt - SOLD! Looking for next project

March 21st, 2008, 01:36 PM	#3
Casper98GT Hardcore Enthusiast Join Date: Aug 2005 Location: NEW HAMPSHIRE Posts: 2,393 iTrader: 0 reviews	it will never be 100%, you could try a speedcal to get it more accurate. but its mechanical so its never going to be exact. __________________ 91 LX, 5spd. Ex:Toyota/Ford tech Marine Machinery Technician, Department of Defense.

March 22nd, 2008, 08:35 PM	#5
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,689 iTrader: 3 reviews	Speed cal is sold by Dallas mustang. It takes the stock gear, and then minupluates the resistance on the VSS. That way it will correct for any gear ratio or tire profile. __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

March 22nd, 2008, 08:37 PM	#6
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	juco.. you really need to add your 96-98 mustang in your sig man.. lol I keep wanting to tell you " you don't have a speedo gear" or "don't worry about the whole ""PI non pi"" thing" lol __________________

March 23rd, 2008, 03:40 AM	#7
97GT4.6 Hardcore Enthusiast 97 GT 14.2@99.8 @ 4800 ft Join Date: Oct 2007 Location: Fort Collins and Pueblo, Colorado Posts: 2,347 iTrader: 1 reviews	yea, matt told me that those gears aren't accurate because they work for 373's and 410's so theres some variation. I leave mine as is at ten over. __________________ Cammed 2v Built By MustangMatt More mods than times your daughter has slept around

March 20th, 2008, 03:03 PM	#2
MikeD05GT MM Fanatic 2005 Mustang GT Join Date: Dec 2007 Location: Cedar Grove NJ Posts: 3,204 iTrader: 0 reviews	nope

March 26th, 2008, 09:01 AM	#8
BlueStangGT Newbie Join Date: Feb 2007 Posts: 21 iTrader: 0 reviews	There's no mechanical correction you can do on a 96-98 5-spd. car and be accurate with any gearset higher than 3.55 unless you replace the drive gear on the tailshaft housing inside the trans. The 23-tooth gear you put in there will shred, they always do, and yours won't be any different. The easiest solution is definitely the SpeedCal and it will be 100% accurate if installed correctly. Go back to your stock VSS gear and adjust the SpeedCal accordingly. __________________ 1998 Bright Atlantic Blue GT Coupe - 5 Spd., Big Bore Headswap, 4.30's, blah, blah, blah...

March 26th, 2008, 03:10 PM	#9
stanglifemike IBEATU 06 GT, 98 GT, & 93 Notch Join Date: Dec 2006 Location: Douglasville, GA Posts: 5,937 iTrader: 0 reviews	^^Welcome __________________ 98 GT: some stuff 06 GT: more stuff 93 Notch: 4 cyl at birth, now 5.0 drivetrain and stock exterior and interior= True Sleeper Paxton/Vortech Crew Member #3 FRPP's #1 Dealer Injected Engineering BMR Suspension

March 26th, 2008, 08:27 PM	#10
BlueStangGT Newbie Join Date: Feb 2007 Posts: 21 iTrader: 0 reviews	Thanks. drgnracin invited me a little over a year ago but I haven't checked in for quite some time. I've been up and down all possible sides of the speedo issue with my 98 car and thought I'd pass along what I'd learned. __________________ 1998 Bright Atlantic Blue GT Coupe - 5 Spd., Big Bore Headswap, 4.30's, blah, blah, blah...

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