I have removed everything listed in my shop manual, cables, wires, right vent cable and vent box, hoses, nuts attaching to dash and firewall, and glove box. I still can't get it to budge. What am I missing?
Any help will be greatly appreciated.
Thank you,
68ragtop

 

There were foam pads on some where the core tubing went thru the duct work and firewall. Sometimes the "tarlike" sealant that sealed the core after many years had to be persuaded, to let go, to get the heater core loose enough to remove it.

 

Thanks, I may have to get a little more physical with it.