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05-11-2006, 10:47 PM
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#1 |
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*Proud Member*
Join Date: Nov 2002
Location: Pittsburgh, PA
Posts: 741
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Speedometer calibration - TH350 where to begin?
Ok guys, i finally got my speedometer to read!!! I have a Garmin GPS and so i had it along with me to see how accurate i am... well, i'm way off. My in dash reads 55 mph when i'm doing 35 mph!!! and reads 80 mph when i'm doing 55 mph! so, i need to get it calmed down. Here is the current configuration:
TH350 Tranny 10 Teeth Drive Gear (red or purple; i think its 10 teeth??) 19 Teeth Driven Gear (natural) 3.73 Rear Axle Ratio 27" Rear tire size (295/50/15) what gears do i need to change? both or just one!?!? i have no idea what my original tire size/rear axle ratio was or if these tranny gears were even installed by the factory or just put in... any direction would be helpful. |
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05-12-2006, 12:10 AM
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#2 |
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I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,774
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Re: Speedometer calibration - TH350 where to begin?
Here's 2 sites for you
http://www.bgsoflex.com/speedo1.html http://73-87.com/7387garage/drivetrain/speedo.htm
__________________
1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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05-14-2006, 05:24 PM
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#3 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Re: Speedometer calibration - TH350 where to begin?
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