1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

Plugs

Discussion in 'Performance & Fuel' started by fugitive, Nov 18, 2013.

  1. fugitive

    fugitive New Member

    I don't know if this has been discussed but has anyone seen any differences in performance from the AC41-993 Iridium compared to the AC14 Rapid fire in a 93 4.3? As of now I have been running the standard copper core RT44lts (Marine) due to the fact that I had them on hand from my boat and my local box store was out of stock when I had a major fouling issue of the above listed plugs. Just looking for some feedback I know the 41-993's performance but the comparison is what I'm interested in. Thanx!

Share This Page