speed with new gears.
04-14-2010, 06:13 PM
#1
Thread Starter
Join Date: Mar 2010
Location: SC
Posts: 14
speed with new gears.
I recently had 3.55 gears installed in my automatic, the tires i run in the rear are 275/40/17 and my speedometer is about 6-7 mph faster then I am actually going. Should I run at taller tire? I need tires anyway.
04-14-2010, 06:21 PM
#2
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
Installing a taller tire (tall enough to correct the speedometer) would negate any advantage gained by the lower gears--it would be as though you never installed the 3.55s.
You need a different speedometer drive gear--I don't know exactly which, but Steeda would help you select the proper one....
You need a different speedometer drive gear--I don't know exactly which, but Steeda would help you select the proper one....
04-14-2010, 10:59 PM
#4
3rd Gear Member
Join Date: Jul 2009
Location: California
Posts: 875
Installing a taller tire (tall enough to correct the speedometer) would negate any advantage gained by the lower gears--it would be as though you never installed the 3.55s.
You need a different speedometer drive gear--I don't know exactly which, but Steeda would help you select the proper one....
You need a different speedometer drive gear--I don't know exactly which, but Steeda would help you select the proper one....
04-15-2010, 09:02 AM
#5
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
The sensor is on the driver's side of the transmission, held in place by a single bolt. It look's like this:
Remove it and you'll see a circlip the retains the drive gear on the sensor shaft--remove the circlip, pull off the existing gear. then install the new gear and criclip.
Put it back together and that's it, it will probably take longer to get the car up on jack stands than to change the gear.
Another option may be the Dallas Mustang SpeedCal. I have never used one, and many links now indicate that it is for manual transmissions only, however the AM link above says it works on '94 to '98 autos--also it's a $100 solution instead of a $15 one.
Remove it and you'll see a circlip the retains the drive gear on the sensor shaft--remove the circlip, pull off the existing gear. then install the new gear and criclip.
Put it back together and that's it, it will probably take longer to get the car up on jack stands than to change the gear.
Another option may be the Dallas Mustang SpeedCal. I have never used one, and many links now indicate that it is for manual transmissions only, however the AM link above says it works on '94 to '98 autos--also it's a $100 solution instead of a $15 one.
04-15-2010, 03:26 PM
#6
Thread Starter
Join Date: Mar 2010
Location: SC
Posts: 14
the guy that installed one said he would do it cause he put one in but wasnt sure on the one to put in he said he is going to swap it out on monday. After spending all the money I have on this car and the work i have done on it myself, I really dont want to do anything else lol. If he will do it for free then it is going to have to wait till then lol
04-15-2010, 06:46 PM
#7
3rd Gear Member
Join Date: Jul 2009
Location: California
Posts: 875
The sensor is on the driver's side of the transmission, held in place by a single bolt. It look's like this:
Remove it and you'll see a circlip the retains the drive gear on the sensor shaft--remove the circlip, pull off the existing gear. then install the new gear and criclip.
Put it back together and that's it, it will probably take longer to get the car up on jack stands than to change the gear.
Another option may be the Dallas Mustang SpeedCal. I have never used one, and many links now indicate that it is for manual transmissions only, however the AM link above says it works on '94 to '98 autos--also it's a $100 solution instead of a $15 one.
Remove it and you'll see a circlip the retains the drive gear on the sensor shaft--remove the circlip, pull off the existing gear. then install the new gear and criclip.
Put it back together and that's it, it will probably take longer to get the car up on jack stands than to change the gear.
Another option may be the Dallas Mustang SpeedCal. I have never used one, and many links now indicate that it is for manual transmissions only, however the AM link above says it works on '94 to '98 autos--also it's a $100 solution instead of a $15 one.
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