When I take the nuts off the five bolts on the engine side of the firewall, the bolts don"t want to push through to the inside side of the firewall , and the inside head of the bolt is flat like a rivet. Is there a special way of getting these out so I can access the heater core?? Do You tap on them from the engine side??
those bolts/studs are attached to the inner half of the heater box. once you have the nuts off and the hoses removed, you can pull the inner box half off the firewall.
In the 66 Pontiac,Beaumont, Acadian Chassis shop manual,it says to remove two screws,and five nuts. I knew about the nuts but not the screws,they are apparently near the blower motor. On a Beaumont , do these screws need to come out,and if so do you have to lower the inner wheel well, or just open it a little .