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12-05-2019, 10:08 AM
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Senior Member
 
Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,996
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Re: factory tach
There is a hole in the back of the tach to access the adjuster screw (potentiometer)
I was able to get mine close. These aren’t super precise, but you may be able to get it close enough.
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ |
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