Drove it!
View attachment 1742221
Shakedown runs and 350 break in continue - I put about 50 miles on it tonight, and found a gravel lot where I could make sure the transfercase (rebuilt by me with LOTS of help from
@orangefj45) worked as it should.
Everything is running well, but tonight I found something odd -
I get a small fluctuation in amperage, which in turn creates a small (30rpm) idle fluctuation. Normally, idle fluctuates between ~710-740 rpm. I thought that was just the nature of a carbureted engine. What is REALLY odd is that the more electrical load I put on the truck, the BETTER the idle gets. Idle drops (to be expected) under load, but if I have lights, wipers, and fan all running, the truck idles perfectly at 600rpm. Zero (I mean zero) fluctuation or surge.
Alternator issue? Distributor issue? I’ve seen idles hey WORSE when accespries sap power from the distributor - this is the first time I’ve seen it get better...
Tomorrow I’ll unhook the alternator and see if my idle stabilizes without it. Any other thoughts of what might cause something like this?