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which plugs for a 440 with MSD #1449382 06/08/13 04:45 PM 06/08/13 04:45 PM
Joined: Mar 2004 Posts: 231 Ct G gts1 OP enthusiast
gts1 OP enthusiast G Joined: Mar 2004 Posts: 231 Ct	Whats the best plug & what gap for a slightly warmed over 440 in a 69 B body auto with an MSD 6A always ran Autolite 86 is there something better. Last edited by gts1; 06/08/13 04:46 PM.

Re: which plugs for a 440 with MSD [Re: gts1] #1449383 06/08/13 04:58 PM 06/08/13 04:58 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	that's what i use and i open them to 40. i also use a blaster2 coil which provides a stronger spark.

Re: which plugs for a 440 with MSD [Re: gts1] #1449384 06/08/13 06:32 PM 06/08/13 06:32 PM
Joined: Jan 2003 Posts: 74,974 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,974 U.S.S.A.	Quote: Whats the best plug & what gap for a slightly warmed over 440 in a 69 B body auto with an MSD 6A always ran Autolite 86 is there something better. Almost anything would be better since autolite moved the production of the standard plugs to Asia. If you want to stick with autolites buy the AR race plugs , at least mexico is within the shores

Re: which plugs for a 440 with MSD [Re: gts1] #1449385 06/08/13 07:15 PM 06/08/13 07:15 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	I always ran champion RJ12YC on iron heads

Re: which plugs for a 440 with MSD [Re: Dodgem] #1449386 06/08/13 07:27 PM 06/08/13 07:27 PM
Joined: Jan 2005 Posts: 4,404 Michigan MarkZ Worthy
MarkZ Worthy Joined: Jan 2005 Posts: 4,404 Michigan	I run copper Champions on aluminum headed small block gapped to 55. I'm pretty sure MSD recommends 55 too. 1987 Fifth Avenue - 512/518/D60

Re: which plugs for a 440 with MSD [Re: gts1] #1449387 06/08/13 08:31 PM 06/08/13 08:31 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	OT, Might vary the plug gap (lower/higher) & NAPA sells an Echlin rotor with a .060" longer blade #MO3000 for $8 & change out the door & might check rotor phasing live every 24 hour block of time like it's your last day on earth

Re: which plugs for a 440 with MSD [Re: gts1] #1449388 06/08/13 11:32 PM 06/08/13 11:32 PM
Joined: May 2005 Posts: 2,295 dark side of the moon D Dougsmopars top fuel
Dougsmopars top fuel D Joined: May 2005 Posts: 2,295 dark side of the moon	Autolite AR 73. There making them again. Not as cheap as the others but run the best in RB mopars with electronic ignition. gap them at 45

Re: which plugs for a 440 with MSD [Re: Dougsmopars] #1449389 06/10/13 11:34 AM 06/10/13 11:34 AM
Joined: Jan 2003 Posts: 5,890 Athens, Greece Pyper70 master
Pyper70 master Joined: Jan 2003 Posts: 5,890 Athens, Greece	I run NGKs in mine but I am also running the RB, MSD 6AL, & Edelbrock Heads. Before the head swap I was running the factory Champion plugs. I still have like 16 in a styrofoam package from the 70s Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

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