2000 Ford Crown Victoria glowing red hot catalytic converte

[quote:95eaf2cad9="buster691979"]Engine Performance problem
2000 Ford Crown Victoria V8 Two Wheel Drive Automatic 106000 miles

i drove to new orleans and the day after i got here i blew my intake. well i replace the engine with a 4.6 out of a mecury grand marquie.. noe the motor is causing my catalytic converter on the passanger side to glow red hot. i changed them on both sides and its still doing it.. i have no ideal and need help plz and thank you...[/quote:95eaf2cad9]