The rear tyres erupt into wheel spin on the wet runway and before long we have hit 100km/h with the bellowing 6.4-litre Hemi V8 of the 2015 Chrysler 300 SRT roaring. But, the unrelenting torque
4741 posts · Joined 2005. #3 · Sep 2, 2018. My coil packs are original at 85K miles, so are the HT leads, and no issues. But I would not change the plugs now without changing the HT leads. Won't be doing that for awhile because I changed the original copper core plugs with platinum ones at 35K miles.
Transform your 6.1L / 6.4L powered Dodge Challenger, Charger, Magnum, Chrysler 300c or Jeep SRT8 into a modern 426 with an Arrington performance HEMI stroker rotating assembly kit to use in your engine build. The Arrington 6.1/ 6.4 to 426 conversion has been dyno-proven to increase torque and horsepower by 30% over the stock motor.PlntH6.