Re: Need Help w Overheating 327 '66
First thing, is it circulating coolant through the rad? I'd pull the thermostat and run without a cap keeping the rad full as it warms up. If it is boiling in the block, and flowing through the rad, something must be blocked somewhere.
I looked back at your thread and that picture of the crud in the intake looks funky. Maybe flush/fill/clean many times.
1967 El Camino Malibu - Deepwater Blue
ZZ4 350, FiTech 600 complete!,Roadmaster tank, 700R4, Underdash A/C in progress, JGC Steering, 1990s truck serpentine.