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440 Spark plugs??? #1462021 07/02/13 10:26 PM 07/02/13 10:26 PM
Joined: Jan 2010 Posts: 313 East Texas M Mopar2DBone OP enthusiast
Mopar2DBone OP enthusiast M Joined: Jan 2010 Posts: 313 East Texas	Hate to keep asking questions but this 440 is a new experience for me.. I'm used to my 340.. Anyways,the local parts store gave me ACDELCO R43S plugs for my 440. Is this a good choice? Stock 77 low compression 440.. Thanks...

Re: 440 Spark plugs??? [Re: Mopar2DBone] #1462022 07/02/13 10:55 PM 07/02/13 10:55 PM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	Better than Champions but I would of insusted on Autolites.. I am truckless..

Re: 440 Spark plugs??? [Re: Mopar2DBone] #1462023 07/03/13 09:26 AM 07/03/13 09:26 AM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	what heads are on the 440? some have the 452 heads that use a 5/8 peanut plug and not the 13/16 plugs. I run autolites in mine, it has the 452 heads that use a 5/8 peanut plug. some of the 452 heads can have the fatter plug also. fat plugs have a washer-peanut has tapperd seat no washer.

Re: 440 Spark plugs??? [Re: scratchnfotraction] #1462024 07/03/13 10:30 AM 07/03/13 10:30 AM
Joined: Jan 2010 Posts: 313 East Texas M Mopar2DBone OP enthusiast
Mopar2DBone OP enthusiast M Joined: Jan 2010 Posts: 313 East Texas	It has 452 heads and I removed Champion RJ18YC plugs from it..

Re: 440 Spark plugs??? [Re: Mopar2DBone] #1462025 07/03/13 10:38 AM 07/03/13 10:38 AM
Joined: Jan 2003 Posts: 21,088 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,088 Niles , Ohio	Get a set of NGKs.I run them in all the cars.Ran Autolites since the 60s.Went NGK and much better.They run better than the Autolite race plugs and are cheaper.Set in my 12.5 440 street driven are on the 4th year and still like new.Rocky Chrysler Firepower

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