rittenrotton 4 Report post Posted February 18, 2019 I have a 70 coupe with a ford racing crate 306, aluminium heads, MSD 6al, and efi...I need to replace my plugs and wires and was looking for recommendations. My motor seems to be running a little hot (based on the plugs I have). I was considering e3 plugs but I've seen a lot of negative reviews, but then a friend recommended platinum plugs but I've heard they aren't as good as copper..Any advice would be greatly appreciated! Quote Share this post Link to post Share on other sites
fvike 173 Report post Posted February 24, 2019 I've always used NGK plugs and Crane/FAST FireWire. They have a super low 25 ohms resistance. After I found the spark plug that works for me I forgot everything I knew about spark heat ranges. But other than the white tip, that plug looks nice. Quote Share this post Link to post Share on other sites
J's69Mach1 17 Report post Posted February 24, 2019 I use Fr4 NGK spark plugs on my 351w and the Ford Racing 9mm wires . Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted February 24, 2019 I've always had good luck with either NGK or Autolite spark plugs. Before trying something like a platinum plug, do some research, I've heard those are not the best choice for an MSD ignition. I always use the plain old copper core spark plugs with my MSD 6ALN ignition. I use MSD Super Conductor spark plug wires. I did install the MSD pro boots at the spark plug end to eliminate the multi angle boot. Quote Share this post Link to post Share on other sites
rittenrotton 4 Report post Posted February 26, 2019 Thank you so much for all your help and suggestions! I will check my timing to see where its set to and if it can be advanced. I just might go with the NGK platinum plugs. I see there are a few different levels/types///Which one did you all go with? Iridium? G-power? Quote Share this post Link to post Share on other sites
cavboy78 28 Report post Posted February 26, 2019 ditto on what Mach 1 said. Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted February 26, 2019 5 hours ago, rittenrotton said: Thank you so much for all your help and suggestions! I will check my timing to see where its set to and if it can be advanced. I just might go with the NGK platinum plugs. I see there are a few different levels/types///Which one did you all go with? Iridium? G-power? When I've installed NGK plugs, I've used the copper core V-power and they seem to work just fine. I don't know what plug gap you are using, if it's still at 0.035" you can probably go up to 0.040". I run mine at 0.040" with 10.7:1 C.R. I've been wondering if anybody had tried the new spark plugs MSD offers? Do they work any better like MSD claims? Quote Share this post Link to post Share on other sites
