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Re: WTB - NOS or perfect used tach dash circuit board
Its common for them to be off. If you have added HEI it makes it even worse as the pulse is different. Some add an EBAY tach filter like the one in the link and claim it helps. Haven't tried it yet myself.
Jeff
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I'm not a pessimist, I'm just optimistic that bad things are going to happen.
1971 Cheyenne Super K10 - tilt, cruise, air, am/fm, tow hooks, factory buckets!
1986 Jeep J10 pickup, - 5.3L Vortec with 4L60e and NP241.
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