passenger's side of engine, last one in back.
there is not just 1 freeze or (soft) plug, there is about 8 give or take a few
The number 1 plug wire on a 454 Chevy engine typically connects to the spark plug located in the front-left (driver's side) cylinder. You can refer to the firing order diagram for your specific engine to ensure the correct placement of the plug wire.
454 = 454. No other number is equal to 454.
1-8-4-3-6-5-7-2
I use autolite plugs in my 454 and you can feel the difference in performance over AC delco's.
.035"
0.045
18436572
.035
0.35
0.35
0.035 in.