In this thread "SOS" means "Same Old Sh!t". Last winter I refurbished my dash with all new Livorsi gauges. From the beginning the tach has worked fine until it gets to 3200 rpm and then it just craps-out. I've run grounds from the dist. cap and coil bracket to the block. I rerouted the coil and sparkplug wires as far from the tach neg. wire as possible. Also installed a filter supplied by Livorsi with no change. So now itís time to start replacing stuff. The engine is a í96 carbíd, gen6 502 and has a thunderbolt ignition.
Question: In what order do I start replacing parts to most likely fix the problem? (plug wires then coil, etc.?) or which parts in what order? My Dad taught me to replace the cheapest parts 1st, but that may not be the order to most likely fix the problem. Thanks for your help.