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Spark plugs for Indy heads #1127637
12/04/11 09:46 PM
12/04/11 09:46 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline OP
pro stock
D-50  Offline OP
pro stock

Joined: Oct 2009
Posts: 1,267
North, Alabama
I just put my new motor in my D-50 today. I still got to buy spark plugs.It is a stock stroke 360 with 12.25 to 1 compression ,Indy 360-2 heads,Bullit solid roller cam. What plugs are you running in your Indy headed motor? Thanks for any help.....

6950988-CIMG0081.JPG (69 downloads)

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: Spark plugs for Indy heads [Re: D-50] #1127638
12/04/11 09:48 PM
12/04/11 09:48 PM
Joined: Aug 2008
Posts: 4,066
Mo.
racerx Offline
master
racerx  Offline
master

Joined: Aug 2008
Posts: 4,066
Mo.
NGK r5671a-11 in mine

Re: Spark plugs for Indy heads [Re: racerx] #1127639
12/18/11 05:27 PM
12/18/11 05:27 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline OP
pro stock
D-50  Offline OP
pro stock

Joined: Oct 2009
Posts: 1,267
North, Alabama
That seems like a cold plug.

6972876-CIMG0081.JPG (64 downloads)

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: Spark plugs for Indy heads [Re: D-50] #1127640
12/18/11 05:47 PM
12/18/11 05:47 PM
Joined: Feb 2011
Posts: 1,454
Glendora Ca.
J
Just-a-dart Offline
pro stock
Just-a-dart  Offline
pro stock
J

Joined: Feb 2011
Posts: 1,454
Glendora Ca.
I run autolite AR3933 plugs in my Indy headed small block



"Just a Bracket car dressed up like a streetcar"
Re: Spark plugs for Indy heads [Re: D-50] #1127641
12/18/11 09:49 PM
12/18/11 09:49 PM
Joined: Mar 2003
Posts: 2,490
PA
moparacer Offline
top fuel
moparacer  Offline
top fuel

Joined: Mar 2003
Posts: 2,490
PA
Quote:

That seems like a cold plug.




It is...I didnt even know they made a -11.
too cold for a 12:1 engine.

Are you running flat tops or dome pistons?

I ran the 5672A-8s at 12:1 with flat tops and 5671A-8 with domes.


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174






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