Haha. All this effort and headache for nothing. 6lbs. Still, 6lbs spinning out of phase would likely be unpleasant. Wish I'd known the balance shafts couldn't have been the problem. Impossible to time the engine with them out of phase, imo. After all this, I'm going to get it back together and have the same vibration issues. Oh well. At least it ran - cool, and leak free.

Traced the leads from positive terminal to 100A linkm up to the headlight, across the core support, to the alternator. No issues. Typical, plastic loom failure, but all wires intact, non-pinched, and away from harm.

Crawled under dash to check the starter button.

(Remember, PO bought from some kid who had a crappy alarm installed. It never worked. John had a starter button install for when the key didn't bump the starter. After I removed the alarm completely, the key no longer bumped the starter. I've been using this button.)

Connections were loose and poorly crimped. Pulled the switch, re-did connections, connected meter. 5ohm open, 0.05ohm closed. This truck is eroding my confidence by the hour, but I'm pretty sure open switch should be OL.

A CLUE? Even though the truck is NOT in gear, suppose someone sat in the cab, turned the key to START and held it there while someone else connected the battery. That kind of instantaneous load pop a 100A link?

Every time I do anything on this truck, something which wasn't originally the problem fails at random. Fuel pump died while the truck was down for overhaul earlier this year, now starter/electrical issues after I basically re-timed the truck and did an oil pan gasket. Ugh.

Thoughts?