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03-09-2009, 03:12 PM
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#1 |
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425hp409
 
Join Date: Oct 2008
Location: Prosper Texas
Posts: 841
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68 Tachometer problem
I installed a tach dash when I restored my truck recently. The problem I have is that it reads about twice the RPM as actual. I connected the tach wire to the negative side of the coil as is the normal procedure. Any help would be appreciated.
Charles |
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03-09-2009, 04:14 PM
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#2 |
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All stock and staying that way
 
Join Date: Jul 2003
Location: Elkland, PA
Posts: 2,087
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Re: 68 Tachometer problem
There were 6 and 8 cylinder tachs. Make sure that you have the correct one.
__________________
1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion..  1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...  2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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