Re: 572 Hemi
[Re: carhunter]
#2975701
10/18/21 03:12 PM
10/18/21 03:12 PM
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Joined: Aug 2003
Posts: 43,161 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,161
Bend,OR USA
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I'm just wondering what spark plugs there running in their Hemi.I was running Ac Delco R43X65 but can't find them anymore. Thanks for any help.
What compression ratio, what fuel are you using and is this a street only or street and strip or race car only? Hemi motors are all a little different, depending on the builder and application BTW, I use to build, race and drive gen 1 and gen 2 hemi on the street and drag raced them also, I'm considering building a using Gen 3 now on a street project My message is all three are different motors and do not like the same parts or tunes
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 572 Hemi
[Re: carhunter]
#2975704
10/18/21 03:16 PM
10/18/21 03:16 PM
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Joined: May 2012
Posts: 1,821 South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,821
South Bend
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I'm just wondering what spark plugs there running in their Hemi.I was running Ac Delco R43X65 but can't find them anymore. Thanks for any help. Never heard of that number, and I was a sales rep for a Delco Remy warehouse for more years than I care to admit.
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
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Re: 572 Hemi
[Re: Cab_Burge]
#2975714
10/18/21 03:27 PM
10/18/21 03:27 PM
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Joined: Feb 2011
Posts: 230 South Carolina
carhunter
OP
enthusiast
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OP
enthusiast
Joined: Feb 2011
Posts: 230
South Carolina
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Iron block 10.5 -1 comp. 2x4 street car, alum. heads, pump gas.
Last edited by carhunter; 10/18/21 03:30 PM.
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Re: 572 Hemi
[Re: carhunter]
#2975786
10/18/21 05:56 PM
10/18/21 05:56 PM
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Joined: Apr 2005
Posts: 4,920 new berlin wisconsin
Mr T2U
master
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master
Joined: Apr 2005
Posts: 4,920
new berlin wisconsin
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it's been over 10 years since me and my friends ran 2nd gen hemi's. we used to run NGK V grove plugs in our hemi's. if i remember correctly they were gr4 or 5.
perception is 90% of reality
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Re: 572 Hemi
[Re: Mr T2U]
#2975790
10/18/21 06:07 PM
10/18/21 06:07 PM
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Joined: Jan 2003
Posts: 1,411 Tallmadge, Ohio
Paul_B
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,411
Tallmadge, Ohio
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it's been over 10 years since me and my friends ran 2nd gen hemi's. we used to run NGK V grove plugs in our hemi's. if i remember correctly they were gr4 or 5. I run NGK GR5 plugs in my 528 Hemi.
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Re: 572 Hemi
[Re: Paul_B]
#2975980
10/19/21 08:10 AM
10/19/21 08:10 AM
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Joined: Jan 2003
Posts: 13,363 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
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NGK 4554 (R5671A-8). 575" all aluminum pump gas motor.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: 572 Hemi
[Re: an8sec70cuda]
#2976053
10/19/21 11:28 AM
10/19/21 11:28 AM
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Joined: Jan 2004
Posts: 4,566 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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I have also run both NGK R5671A-8's and GR5's, along with with Champion RN12YC and 10YC's. Seems to not matter. It runs and like all of them just fine on pump gas.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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