First of many radiator flushes complete. Lots of rusty water out, as you would expect for sitting in a storage unit for years.
My oil pressure gauge on the Holley is on the fritz. Sometimes it will read negative numbers, sometimes it will read as you would expect, and sometimes it will read ~70 psi high. I checked the dipstick and there was nothing on it, so I started freaking out. I put 6 quarts in and I'm like there's no way it went through that much oil without smoking or having a big puddle underneath. Turns out my aftermarket dipstick doesn't reach the oil. I pulled the breather off the valve cover and watched a healthy stream of oil flow down the rocker. It's got oil and oil pressure. Got a new oil pressure sensor to install, but I'm wondering if it needs some $pecial Holley sensor.
So far, it's run for multiple 20 minute sessions to get the thermostat to open. It's good enough to consider done, IMO. Just a few more radiator flushes and then add coolant.
Going to fab my brackets that hold the engine plate to the frame and then resume the QA1 install.