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Author
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Topic: fox speedometer's actual mileage?
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gercolla1
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Member # 3068
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posted
 
 
In the mid 90's I had 355's installed in place of the factory 273's. Just before the swap the car had 40K. I never calibrated anything so the speedo always read faster. Today the odometer "reads" 170K. I can barely guess the actual mileage. Can I ever calculate this, at least within several thousand miles? ![[Confused]](confused.gif)
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Sf Bay Area
Posts: 2171 | From: Sampan San Francisco | Registered: Jul 2003
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66 AC COBRA
Nitrous King
Member # 904
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posted
u have 140k original miles
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FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
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66 AC COBRA
Nitrous King
Member # 904
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posted
when ur doing 70mph, ur speedo is saying that ur doin 90mph
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FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
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gercolla1
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Member # 3068
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posted
not bad ![[patriot]](graemlins/patriot.gif)
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Sf Bay Area
Posts: 2171 | From: Sampan San Francisco | Registered: Jul 2003
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AL STOCK
Its All Stock
Cuzzon
Member # 1852
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posted
Yeah i have 3.73s and is been installed for over 8 months now....When i had it installed i had about 129K miles now it reads 153K..Lotta driving to Sacramento also so somewhere around 138K acutal mileage -
How much do calib. cost?
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.:: FANATICS ::.
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Posts: 6498 | From: San Bruno | Registered: Sep 2002
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graylx
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Member # 3919
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posted
A way to calculate.
170,000 miles on odometer currently
- 40,000 miles before swap
= 130,000 "miles" since swap
130,000 x 2.73 (original gear ratio) / (divided by) 3.55 ( your current gear ratio)will give you accurate mileage. The speedo gear (as well as odometer) in your tranny is calibrated for 2.73s but some math will allow you to determine relatively accurate mileage.
so...
130,000 x 2.73 = 354,900
354,900 / 3.55 = 99,972
99,972 miles since gear swap
99,972 miles + 40,000 original miles =
approximately 140k miles.
I wish I had a life.
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2012 Mustang GT
1989 Mustang LX 5.0 Notch
1995 Impala SS
Posts: 891 | From: Fresno | Registered: Dec 2003
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DropTopFox
drama
Member # 1689
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posted
quote:
Originally posted by AL STOCK:
Yeah i have 3.73s and is been installed for over 8 months now....When i had it installed i had about 129K miles now it reads 153K..Lotta driving to Sacramento also so somewhere around 138K acutal mileage -
How much do calib. cost?
It's a $25 little piece man. pick it up from brother's or steeda. It's just a tine little gear. If you don't know where it is I'msure you can run it over to Rob's or his cousin John's really quick and they could show you
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Go out and do something for yourself today everyone, quit depending on others
-Me
http://www.CaliforniaFords.com/cgi-bin/album.pl?album=00001689
Posts: 4003 | From: San Bruno | Registered: Aug 2002
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