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Discussion Starter · #1 ·
ive got a 03 s10 with 4.3/auto.2wd. I changed rearend to a 4x4 for the width and disc brakes. Now speedo reads about 20% too fast. Is there a plastic gear drive to change and which one should I get? Thanks for the help.
 

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Anybody with HP tuners or EFI Live can make the adjustment in the computer. Just need to pay the fee to do your truck.
HPT is $100, not sure about EFI Live.
The plastic gears disappeared about 25 years ago. Welcome to the 21st century.
 
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