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Re: spark plug choice for a 10:1 383 with a 292° hyd cam?
[Re: domingo]
#1747301
02/05/15 09:48 PM
02/05/15 09:48 PM
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Joined: Jun 2008
Posts: 3,916
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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Quote:
just found some NOS mopar plugs in my storage. PN 2642913
those are NOS for the HP motors I think....IM gonna give em a shot...
probably 34p's or j11y's. my favorite iron head plug.
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Re: spark plug choice for a 10:1 383 with a 292° hyd cam?
[Re: lewtot184]
#1747302
02/05/15 09:56 PM
02/05/15 09:56 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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NGK R5670-7 or -8
Not sure dollar for dollar the R NGK plugs can be beat.
They are 2.19 a plug at advance.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: spark plug choice for a 10:1 383 with a 292° hyd cam?
[Re: domingo]
#1747303
02/06/15 12:53 AM
02/06/15 12:53 AM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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RJ12YC all I ran om my iron head 440 great street strip plug did it all!  that part number is for J11YC I think and they will be fine too. no resistor.
Last edited by Dodgem; 02/06/15 12:57 AM.
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Re: spark plug choice for a 10:1 383 with a 292° hyd cam?
[Re: Cab_Burge]
#1747306
02/11/15 07:52 PM
02/11/15 07:52 PM
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Joined: Jun 2008
Posts: 3,916
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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Quote:
Quote:
RJ12YC all I ran om my iron head 440 great street strip plug did it all!
that part number is for J11YC I think and they will be fine too. no resistor.
Mopar used the J11Y in the 415 HP M.W motors, they work good in them  To bad we can't by them anymore  I tried J12Y,J11Y and J10Y in my old 415 HP M.W car, it started and idle the best with the J11Y
i got some 34p's (j11y) i don't need,... 
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