Which spark plug should I use on an SRT-8 with nitrous?
I believe I should go one range cooler than stock, but I see everyone saying to use the NGK 4306. According to NGK's website, that plug is one step cooler than a 5.7L Hemi, but is the same heat range as the stock plug on the 6.1L Hemi.
Should I be going one range cooler than the NGK 4306 for using a 100 shot on an SRT-8?
4306 is the stock heat range. Which is a 5. One step colder would be a 6 heat range.
I also was running the 4306 with a 100 shot with my last setup. I usually ran some race gas when spraying.
Last edited by HalV48; 07-01-2007 at 09:17 AM.
2006 300C Black SRT8
To Be Announced
I believe I have these in my car, since I added heads and cam.
2315 NGK Iridiums, one step colder than stock SRT plugs.
Robert and Alice - Engaged 12/13/2008, NYC Central Park on "Gothic" footbridge
R.I.P. Dad aka DynoBob
I can't find a plug that I like one step colder than the 4306, so I think I'll use the Iridium plug as you are. I think I'll close the gap down to about .035 as well.
Thanks for the help everyone.