'69 Fargo W100

I changed out the voltage regulator for a known working one I had. The one on the truck had very rusty terminals which were beyond cleaning up.

As for grounds, I have battery to engine, rear of engine to firewall, frame to body, and battery to rad support. I cleaned every terminal and sanded the contact points down to bare metal.

The starter, like I said, is brand new and known to work, as I was running it on my Cuda before I tore it down. Now, the starter is making a loud, almost grinding sound, however I know it's turning the engine because I can see the fan spinning. Yet, it just doesn't sound like it wants to fire. It's still too sluggish to even try.

It's pissing rain today, so I set up a tarp overhead, but getting dripped on is no fun. I go to work tomorrow for a couple weeks, so it doesn't look like I'm going to get this running, bit I'll give it a

Pull the spark plugs out squirt some 30 wt oil in each cylinder.
Leave the plugs out and see how it cranks.
Maybe even pull the rocker arms and push rods to eliminate the valves.
Make damn sure the battery has full charge.