Spark plug recommendation
#2380760
10/02/17 07:26 PM
10/02/17 07:26 PM
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Joined: Jan 2003
Posts: 1,261 Phoenix, AZ
Belvedere1
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,261
Phoenix, AZ
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Its time to get the car out of summer hibernation and some fresh plugs are probably in order so wanted to get some thoughts on whether to go with what I have been running or go with something else. Currently running Autolite 23. Motor is a 10.5:1 451, OOTB Edelbrock RPM heads, I'm limited to 91 octane at the pump. Cam is a solid .520 lift @ 254, 800 Edelbrock carb, Firecore distributor, chrome box, MSD Blaster coil. The plugs look clean now and if anything maybe on the lean side.
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Re: Spark plug recommendation
[Re: Belvedere1]
#2381040
10/03/17 01:38 AM
10/03/17 01:38 AM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Its time to get the car out of summer hibernation and some fresh plugs are probably in order so wanted to get some thoughts on whether to go with what I have been running or go with something else. Currently running Autolite 23. Motor is a 10.5:1 451, OOTB Edelbrock RPM heads, I'm limited to 91 octane at the pump. Cam is a solid .520 lift @ 254, 800 Edelbrock carb, Firecore distributor, chrome box, MSD Blaster coil. The plugs look clean now and if anything maybe on the lean side. I'd go w/a #7 NGK or it MAY like the hotter #6............
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Spark plug recommendation
[Re: Belvedere1]
#2381042
10/03/17 01:40 AM
10/03/17 01:40 AM
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Joined: Aug 2003
Posts: 43,284 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,284
Bend,OR USA
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I have used that same plug in similar motors, they worked fine If it ain't broken why fix it In other words if they look good now use them again
Last edited by Cab_Burge; 10/16/17 05:35 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Spark plug recommendation
[Re: AndyF]
#2382294
10/05/17 08:51 AM
10/05/17 08:51 AM
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Joined: Feb 2006
Posts: 2,379 MD
Kevins493
top fuel
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top fuel
Joined: Feb 2006
Posts: 2,379
MD
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I'd put NGK #6987 in there. Extra projected nose, extra wide gap, super inexpensive plug. They are the OEM plug on a bunch of cars including some Jeeps. $2 each from Summit. https://www.summitracing.com/parts/ngk-6987 How does that plug compare to the AR3923 as far as heat range?
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