67-72 factory tach calibration?
Does anyone have any experience with calibrating a factory tach? I have two of them and they work fine, but there is a ,sort of dial looking thing, on the back and I can't find anything in the manuals about it. I just want them to be indicating the correct RPM. Also, the one tach I have in my 69 with a 454 and it stops at 3200 RPM. The needle just stops like it is hitting a stopper? Any in formation on these tachs I would appreciate the help.
68 GMC 1500 4X4 short fleetside, daily driver on my 12 year resto!
69 GMC 2500 4X4 long stepside, project
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10-25-2004, 03:32 AM
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