[machine463]

Time to change my spark plug what are your recommendation for brand and gap
My mod are Predator and CAI so far and maybe exhaust down the road
Thank for the help
PS The engine is the 5.7 L 300 C 2007
Thank again

 

[Rambit]

Don't be fooled with marketing gimicks of claims of better spark and higher performance. Stick with the OEM Champion plugs and you'll be fine.

Here's how to save yourself a ton of money by doing it yourself - Spark Plug Replacement 2005 5.7L * - LX Forums Modern Mopar Muscle.

Bernie

 

[machine463]

Thank you very much for the fast response and the link

 

[Rmh77]

Don't be fooled with marketing gimicks of claims of better spark and higher performance. Stick with the OEM Champion plugs and you'll be fine.

Here's how to save yourself a ton of money by doing it yourself - Spark Plug Replacement 2005 5.7L * - LX Forums Modern Mopar Muscle.

Bernie

+1 ive been working for chrysler for many years. They like champion only and its the only thing i will use

 

[2005_300c]

just did my plugs Champions are only a couple of bucks each, thats what the oem plugs where it a DIY job

took me about an hour car runs great

 

[Chase300]

Well...I'll just say I prefer NGK V-Power's. They are a high quality all copper plug and they perform great. I run them in all 4 of my mopar's and will use nothing else.

 

[Steel Streak]

I just turned 28K on the odometer. Two weeks ago I changed the original factory plugs with NGK IX Iridiums. At first, no difference. A few days later I was noticing a very slight gas mileage improvement at highway speeds of 70. Normally I would get 24.0 MPH, however, I have been closely monitoring the new install and I am consistantly getting 24.9. Now, this is nothing to crow about, especially at $129. If this gain remains constant I may see a break even point on gas savings in 2019! Next time I will go with the Champions. Although it gives my exceedingly great pride to say I have installed these babies---This came at a significant cost. I would say stick with what you already have for a plug.

 

[Rambit]

If this gain remains constant I may see a break even point on gas savings in 2019! Next time I will go with the Champions.

Haha, too funny, but oh so true!!!

Bernie