Radiator and fan clearance stock 66 Dart GT with 225

Look very closely at your radiator support. I bet it's pushed in toward the center. Mine was. I measured from where the support meets the inner fender on both sides to the firewall. Got the same measurement. Measured from the center to the firewall. Almost 1" less. I think it was like that right out of the gate, because although my front bumper and valance are damaged, the grill is perfect. I got a port a power and pushed the support out about 1" and that gave me a lot more room I run a 3 row aluminum radiator and now have a decent amount of room and before I could barely get the radiator out.