Thread: Best Spark Plugs and Wires

Originally Posted by bluegtp91

I'd always go with Autolite 606's. These motors love copper core plugs time and time again. Wires? Vatozone special...the duralast wires...lifetime warranty too...and cheap.

"...You should also stay away from using a copper core spark plug unless you really enjoy changing spark plugs. Your DIS ignition fires one half the spark plugs in the opposite direction, meaning the spark actually jumps from the side wire to the center wire. using any copper plug in a DIS ignition vehicle is a mistake that will cause rapid degradation in the sidewire and misfires in as little as 16k miles. Use the Autolite XP606 Iridium fine wire plug. Yes, they cost 7 bucks a piece. They are worth it. They take less ignition voltage to fire and have a 25% larger flame kernal than the stock plug. The also have a platinum button on the side wire to prevent gap erosion. They have a 100k life span as well. If I can answer any other questions for you, please feel free to contact me at Jay.Buckley@Honeywell.com" - Technical Manager of Autolite, regarding spark plugs in 3800's