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Spark Plug recommendation #2434632
01/14/18 09:53 PM
01/14/18 09:53 PM
Joined: May 2007
Posts: 10
SW FLORIDA
M
MPRB Offline OP
member
MPRB  Offline OP
member
M

Joined: May 2007
Posts: 10
SW FLORIDA
I need plugs for a 408 Stroker ma-x heads 9.8 to 1 cr
street ride. Need to be 5/8 plugs what do you guys recommend?

Re: Spark Plug recommendation [Re: MPRB] #2434671
01/14/18 10:47 PM
01/14/18 10:47 PM
Joined: Nov 2003
Posts: 36,039
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
R

Joined: Nov 2003
Posts: 36,039
Lincoln Nebraska
NGK gets good reviews here & iirc one other brand I forget. Just me I wouldn't sweat the brand too much. most are made overseas now. wallace raceing has good plug heat range info/pics


live every 24 hour block of time like it's your last day on earth
Re: Spark Plug recommendation [Re: MPRB] #2434694
01/14/18 11:15 PM
01/14/18 11:15 PM
Joined: Jan 2003
Posts: 21,043
Niles , Ohio
T
therocks Offline
oh wait.but hey.lets see.oh yeah.
therocks  Offline
oh wait.but hey.lets see.oh yeah.
T

Joined: Jan 2003
Posts: 21,043
Niles , Ohio
I used Autolite race plugs in my 12.5 aluminum head 440.Went NGK and have used them in all our stuff now.Used them a lot at work also.Never a problem.Rocky


Chrysler Firepower
Re: Spark Plug recommendation [Re: MPRB] #2434700
01/14/18 11:22 PM
01/14/18 11:22 PM
Joined: Aug 2003
Posts: 42,996
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 42,996
Bend,OR USA
Are you needing 14 MM 3/4 reach with the 5/8 body size? If so I would and do use either the Autolite #3924 or Champion RC12YC up scope
I don't remember the proper NGK numbers right now blush
The low compression street pump gas motor needs a plug that will be hot enough to not foul at light part throttle cruise and cold enough to not detonate at WOT work
Those two plugs have work very well for me in the past on pump gas motors up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)






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