572 B1 headed NGK sparkplug number question
#2481847
04/12/18 09:56 PM
04/12/18 09:56 PM
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Joined: Feb 2005
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pittsburghracer
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"Little"John
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"Little"John
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This is my first B1 headed combo and very first nitrous application. I have used Autolite plugs in all my builds for the past 44 years but NGK seems to be the go to plug with nitrous. Brad Watt was gracious enough to get me pointed in the right direction but before I order several boxes I would like to pick other B1 guys brain. I want to start out NA and then slowly apply the juice after a week or two so I need a NA and nitrous NGK plug number. Thanks guys. Its a 200-650 plate system
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 572 B1 headed NGK sparkplug number question
[Re: Sammy]
#2481862
04/12/18 10:31 PM
04/12/18 10:31 PM
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Posts: 20,185 PA.
pittsburghracer
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"Little"John
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"Little"John
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NGK 5672A-9 from 14-15.5 Compression is what my friends use on their B1 engines NA or nitrous. Thanks Sammy
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 572 B1 headed NGK sparkplug number question
[Re: pittsburghracer]
#2481868
04/12/18 10:38 PM
04/12/18 10:38 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
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I Live Here
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NGK 5672A-9 from 14-15.5 Compression is what my friends use on their B1 engines NA or nitrous. Thanks Sammy I run the 5671a-9 in my car and it is NA and 12.3 comp ratio
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: 572 B1 headed NGK sparkplug number question
[Re: pittsburghracer]
#2481888
04/12/18 10:58 PM
04/12/18 10:58 PM
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Joined: Jan 2003
Posts: 19,375 Las Vegas
Al_Alguire
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I Live Here
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Start with a -9 on motor IMO.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 572 B1 headed NGK sparkplug number question
[Re: a493demon]
#2481971
04/13/18 01:44 AM
04/13/18 01:44 AM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
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"Little"John
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"Little"John
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I already gave you the number for nitrous The 9s for NA the 10s for spray I know and I appreciate it but I want to be FASTER than you so I was just checking. LOL
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 572 B1 headed NGK sparkplug number question
[Re: a493demon]
#2481976
04/13/18 01:54 AM
04/13/18 01:54 AM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
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"Little"John
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"Little"John
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Thanks buddy. lov ya. 2nd one to the finish line buys first round.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 572 B1 headed NGK sparkplug number question
[Re: dartman366]
#2481980
04/13/18 02:31 AM
04/13/18 02:31 AM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
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NGK 5672A-9 from 14-15.5 Compression is what my friends use on their B1 engines NA or nitrous. Thanks Sammy I run the 5671a-9 in my car and it is NA and 12.3 comp ratio That's a bit cold for that compression imo and I run 8's at 12.1.1..I agree on 9's for Pittsburghracer though...........
Last edited by Thumperdart; 04/13/18 02:33 AM.
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: 572 B1 headed NGK sparkplug number question
[Re: Thumperdart]
#2482015
04/13/18 09:09 AM
04/13/18 09:09 AM
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Joined: Nov 2003
Posts: 10,384 Upstate NY
Bigcube
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I Live Here
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NGK 5672A-9 from 14-15.5 Compression is what my friends use on their B1 engines NA or nitrous. Thanks Sammy I run the 5671a-9 in my car and it is NA and 12.3 comp ratio That's a bit cold for that compression imo and I run 8's at 12.1.1..I agree on 9's for Pittsburghracer though........... I agree with this, I also ran -8 plugs at 15:1 and would have went to a -9 for a small shot of spray.
Jim
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Re: 572 B1 headed NGK sparkplug number question
[Re: pittsburghracer]
#2482046
04/13/18 10:23 AM
04/13/18 10:23 AM
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Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
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The 5671A is the number for non-projected tip. The 5672A is the number for projected tip.
The heat ranges run from 5 to 11, hot to cold, and are closer together than most of the other plugs.
I've found with my 11 to 1 small block, I can get away with 8s on Drag Week, driving on pump gas, and then spraying at the track with 114 in the tank.
My brothers like to switch to a colder 9 or 10 when spraying their big blocks.
Plug Number/Part number Projected tip BCP6ES/4930 BCP7ES/5030 R5672A-8/7173 R5672A-9/7405 R5672A-10/7942
Non-projected tip R5671A-7/4091 R5672A-8/4554 R5671A-9/5238 R5671A-10/5820 R5671A-11/6596
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: 572 B1 headed NGK sparkplug number question
[Re: MoparBilly]
#2482049
04/13/18 10:35 AM
04/13/18 10:35 AM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
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"Little"John
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"Little"John
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Thanks guys. It sounds like Brad (a493demon) was on point recommending R5671A-9 (5238) NA and R5671A-10 (5820) Nitrous. Hope o place the order today and make some noise with this thing soon.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 572 B1 headed NGK sparkplug number question
[Re: a493demon]
#2482410
04/14/18 01:55 AM
04/14/18 01:55 AM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
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"Little"John
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"Little"John
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John I want you to be fast . But just a little slower then I am lol . Just bring the Absolute Vodka Brad. I will bring my Diet Dew mixer. I ordered 10 sets of plugs today so that will get me started. Thanks for the plug numbers.
Last edited by pittsburghracer; 04/14/18 01:55 AM.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 572 B1 headed NGK sparkplug number question
[Re: dthemi]
#2482729
04/14/18 08:59 PM
04/14/18 08:59 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
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"Little"John
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"Little"John
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No way possible to use a 13/16 plug on my combo. I’m making special tools for 5/8 plugs.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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