im running 6 degree heat range plugs and gap at .28. just wondering if this is the right heat range and gap for my setup. pushing 400hp @ 17psi. i'm currently running the cheap v-power ngk plugs. planning to go get some iridium plugs and just want to know if i should get the same head range or difference one.

 

from what Ive seen, its best to stay away from the iridium plugs. most people seem to run coppers with heat range 7. maybe even colder if running race gas.

search the archives there is a ton of plug information

 

stick with the v power plugs. Dont get that iridium ****. I would def go colder on the heatrange though for that power level.

 

how do i know which plugs are coppers? do you have a part # for that. is 6 heat range ok for 400hp range? 7 heat range??


Modified by eg:R at 7:16 PM 5/21/2006