View Full Version : Spark Plugs

08-11-2012, 07:00 PM
Hey Guys, It's time for new plugs for my 440 , its the 350 hp motor but I have added 750 Holley, Mopar duel plane alum. intake, headers and a cam 271/279 Dur. with just at 500 lift, if I remember the hp motor ran a cooler plug. Do you think my bolt on,s bump me to the hp plug??
PS...any suggestions on type or brand name??

tks Anthony

08-12-2012, 06:34 PM
NGK, based on below compression ratio:

http://search.store.yahoo.net/chucker54/cgi-bin/nsearch?query=ngk&searchsubmit=Go&vwcatalog=chucker54&.autodone=http%3A%2F%2Fchucker54.stores.yahoo.net% 2F