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Old 01-03-2022, 08:34 PM   #5
tim_mc
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Join Date: Jan 2019
Location: St Peters, MO
Posts: 454
Re: Time for a new HEI?

Maybe disconnect your tach lead from the HEI to make sure it's not grounding out somewhere.

Last June my new GM HEI started giving me problems after only a year or so of use. I first tried a new coil and module from my local Advance Auto Parts, but the new module was suspect after the truck died a couple of times unexpectedly but would fire up after sitting for a minute or two. A Davis Unified Ignition (DUI) coil and module fixed me up.
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column.

Last edited by tim_mc; 01-03-2022 at 08:49 PM.
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