Posted By: zzyzxpat
Best spark plug - 08/31/10 01:23 AM
Looking for recomendations for a 10:1, 361, 3.75 stroke, .045" quench, 516 heads,Pertronix 3 conversion, 60304 Lunati, DP4B, no carb yet, HP exhaust manifolds, auto, 3.55 rear. New combo, street only, getting ready to fire soon. Thanks in advance.
Posted By: Anonymous
Re: Best spark plug - 08/31/10 01:48 AM
I say this everytime this question comes up but...Mancinis has the best plug chart anywhere and NGK #'s NGK is the best out there and that chart nails it for numbers that you can get at the local parts store anywhere OR AT MANCINIS
Posted By: JoesMopar
Re: Best spark plug - 08/31/10 02:09 AM
Champion
NGK's are for honda's...
Posted By: roe
Re: Best spark plug - 08/31/10 02:21 AM
has anyone tried those new E-3 plugs? my brother swears they made his car run smoother/stronger, and better on gas. what do you guys think abouth them?
Posted By: roy2345
Re: Best spark plug - 08/31/10 02:27 AM
E3 plugs are in my 440 and it made it run alot smoother.....
Posted By: stumpy
Re: Best spark plug - 08/31/10 03:20 AM
E3s are over priced over hyped waste of money. If they were all that great the factories would be using them. A good single electode plug is all anyone needs. Those extra two electrodes just shroud the spark.
Posted By: zzyzxpat
Re: Best spark plug - 08/31/10 03:24 AM
Can you give me a number to start with, or just run with the catalog number? Thanks for your time.
Pat
Posted By: MidPenMopar
Re: Best spark plug - 08/31/10 03:33 AM
Never had any luck with Champions but maybe it's just me. I use those ACCELL split grove plugs in my 383 and they seem to work great!
Posted By: ahy
Re: Best spark plug - 08/31/10 04:15 AM
Mancini will fix you up with either NKG's or Champions. I've had good results with NKG's.
Posted By: babarracuda
Re: Best spark plug - 08/31/10 01:03 PM
I've run Autolite in my engines 318/361/360/383/440 for the last 40 years with no problems.
Posted By: therocks
Re: Best spark plug - 08/31/10 03:28 PM
Ive run Autolites since the 60s.Never had a problem.Just put NGKs in my 12.5 street driven 440 last year.Its faster idles better and even seems to get a bit better milage.Only thing I run Champions in is the new Mopars.I agree the E3s seem like hype.Rocky
Posted By: zzyzxpat
Re: Best spark plug - 09/01/10 01:45 AM
Yea, it's a little different. It's the original engine in a '66 Coronet 440, barn find, that sat since 1981. I picked it up last year and with my boys help, am in the process of putting it back on the road. I wanted to keep it as original as I could. Hate spending the money to stay 361, but everybody and their brother has a 440. I figured if I was going to go 361, I would at least stroke it a little. I am getting ready to order pistons, probably from someone on Moparts. That is why I was asking about the plugs, so I can do a proper CC on the heads before I order. I plan on running the Pertronix with no ballast, as I think they recommend that. I agree with you on NGK. They do look quality. I went on Mancinis to get the number. Thanks to all who responded. I love this place. Pat
Posted By: therocks
Re: Best spark plug - 09/01/10 02:39 PM
At least no one suggested Bosch plugs.Thats a good thing.The 361 is a good motor.I had 3 of them and the one that was in my 65 was bullet proof.I tried to blow it and never could.My old man wouldnt let me put a 440 in because the OE motor was still running.When I moved the 361 came out and 440 went in.Rocky
Posted By: 74RALLYE
Re: Best spark plug - 09/01/10 05:40 PM
NGK for my 440. They also last a very long time in 2 stroke dirt bikes.
Posted By: BobN
Re: Best spark plug - 09/02/10 03:06 AM
I have had great response with NGK's in my 440!
Posted By: Rug_Trucker
Re: Best spark plug - 09/02/10 04:58 AM
Never had a problem with a Champion. Autolites were great, now made in China.
E3? Isn't that the plug that fires through a diamond? I don't think they have 3 pronds.
