Thread: Help! 350 small block got hot and turned off now wont start!

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Thinking the same, my tachometer is connected to the coil so it sounds like something in the coil/distributer/spark wires or ignition circuit. I would do the old take one spark plug wire off, and test to see if your getting spark. If not it narrows the problem considerably!
This auto meter schematic shows how tthe tachometer is connected the ignition circuit.
https://www.autometer.com/media/manual/2650-1244.pdf


I'm guessing if the engine turns over the ignition switch is o.k., maybe the other guys on here can be more specific. If you engine uses a points and condensor, then your problem could be there, or with one of the wires routed thru there. I nice multimeter can help check old wires for conductivity. On my 71 ford it did the same thing, no spark, I replaced everything, only to find it was the wire from the distributor from the coil. Matter of fact trying to figure this out was the first post I came to this site for, and Techinspector figured out my problem!

The schematic I posted shows the tach wire going to the negative side of the coil, so like Firebird said above check the coil wires first!

Thanks to all. Will check soon as im home.