Just to clear the air here:
The purpose of the 455 HO thread/forum is to provide a focal point/gathering place for ALL 455 HO enthusiasts to exchange information,knowledge, and personal experiences,etc. that pertain to Pontiacs most POWERFUL round port large journal engine of the "smog" era.
It was placed in the 70-73 Firebird section because that is where the majority of these engines seem to be,but ALL Pontiac enthusiasts are welcome here,ESPECIALLY GTO & "A" body owners/enthusiats. (even the SD guys with the slower,LESS powerfull 455's are invited to read/contribute)