T/AWS6969
09-30-2008, 07:19 PM
The reason i ask is that i have ac delco iridiums laying around (less than 1000 miles) that i put in my trans am (2002 ws6), i had to change to a colder plug when i put the Procharger on. Can i use these? should I try it? It is an old school 350 punched to 391 (custom forged crank @ 30 over) with HEI. thanks guys