I am running 33's on my f-150 with 3.54 gears and i was wondering how i can correct the spedo reading. Thanks, Zach

 

look for a shop near you that does it. Not sure where you're at, but I know there's at least 3 here in Ga. that specialize in re-calibrating speedos.

 

Ford makes different drive gears that fit on the end of your speedo cable where it plugs into the transmission. Pop the retainer clip off the gear, put a different one on. You need to know how far your off:http://www.pitbulltires.com/calculate.php

 

There's a way to do it in your truck yourself but it can only be done 3 times in the truck's lifetime.

 

Please inform me of this.

 

Actually, it can be re calibrated 6times in '92 - '96/97 F150 - F450.

If you truck is of this era I will send you the link with instructions.

Other pre '92 years requires changing the gear in the tail shaft of the tranny.

 

my truck is an 88

 

His truck is an 88'. Mechanical! Different size gear drives on the tip of the Speedo cable. Takes five minutes. Use the link I gave to figure how far your off. & here's a link for the gears. There around $16. http://www.transmissioncenter.org/Fo...eter_Gears.htm

 

Read thru this thread. Lots of information and a Speedometer Gear Calculator to help you find the right gear. Good Luck.

http://www.ford-trucks.com/forums/90...o-are-off.html

 

thanks guys, any idea what one i would need? It has never been changed before.