Hemi spark plugs
#1794352
04/01/15 06:16 PM
04/01/15 06:16 PM
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Joined: Sep 2006
Posts: 1,132 Home of the Bluegrass
MoparJunkie
OP
super stock
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OP
super stock
Joined: Sep 2006
Posts: 1,132
Home of the Bluegrass
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Hey guys, finally getting ready to fire the hemi up and I want to know if NGK BP7ES plugs will be okay? 472 with eddy aluminum heads, 10.5 cr, with 587/564 hydraulic cam... They're 13/16 hex plugs just want to make sure the reach is correct????? TIA
"It takes a Mopar to catch a Mopar” 1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54 2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
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Re: Hemi spark plugs
[Re: sunroofgtx]
#1794359
04/03/15 11:11 PM
04/03/15 11:11 PM
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Joined: Sep 2006
Posts: 1,132 Home of the Bluegrass
MoparJunkie
OP
super stock
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OP
super stock
Joined: Sep 2006
Posts: 1,132
Home of the Bluegrass
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Rick, should I use the 5/8's or 13/16's??? I forgot what we discussed????
Last edited by gg70rtUcode; 04/03/15 11:46 PM.
"It takes a Mopar to catch a Mopar” 1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54 2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
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Re: Hemi spark plugs
[Re: MoparJunkie]
#1794360
04/06/15 02:35 AM
04/06/15 02:35 AM
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Joined: Jan 2005
Posts: 193 Australia
Teamx
member
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member
Joined: Jan 2005
Posts: 193
Australia
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Stick with the 13/16 plugs as they are the correct length for the plug boot. The 7 is a cold plug for your combo start with a 6 if its going to see a lot of idling you could even go with a 5.Dont forget to cut the washers off the plugs!
Last edited by Teamx; 04/06/15 02:56 AM.
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Re: Hemi spark plugs
[Re: super451b]
#1798045
04/07/15 11:41 PM
04/07/15 11:41 PM
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Joined: Jun 2005
Posts: 6,257 gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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If your chambers have been worked/cnc'd , you may want to find a way to see exactly how long of a reach plug that you need. I have a set of BB RPM heads in the shop now that have had the chambers cnc'd and because of the material that was removed , the threads for standard .750 reach plug ,for that head, now protrude an 1/8" into the chamber. While I dont think that would cause any clearance issues, it will affect how well you plug will dissipate heat. So with the plugs sticking into the chamber 1/8 inch, do you just stack washers on the plug to correct the depth? Leaving them long , the threads will carbon up and either pull the treads upon removal or break off the plug. What's it going to be?
it's ok to butt heads, just don't do it with a butthead
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Re: Hemi spark plugs
[Re: MoparJunkie]
#1801526
04/12/15 08:29 AM
04/12/15 08:29 AM
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Joined: Mar 2003
Posts: 1,629 pa
572charger
top fuel
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top fuel
Joined: Mar 2003
Posts: 1,629
pa
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i use autolites in my hemi 65's hot for drivin around 64's race on motor and 63's for the spray on pumpgas !!!!! hope this helps , they are cheap also like 14.94 for a set of 8 !!!!
606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back
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