Spark plugs for nitrous use

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Juiced66chevelle · #1 Post by **Juiced66chevelle** » Tue Mar 18, 2008 8:56 pm

I have a 383 ci at 11.5.1 compression. The nitrous dual shot I am using will be 100 hp each. What is better to use, Autolite's copper AR134 or AR132? What is your preferred plugs?

THANKS

rustbucket · #2 Post by **rustbucket** » Wed Mar 19, 2008 12:32 am

i like ngk4554

#3 Post by **John_Heard** » Wed Mar 19, 2008 5:39 am

The AR134 would be the hotter plug, approximately equal to the NGK R5673-8, the AR132 is more like the R5673-9. The R5673-8 or AR134 would be pretty good to use on a 200 shot.

ERV JR · #4 Post by **ERV JR** » Wed Mar 19, 2008 1:28 pm

John you would spray a 200 shot on an 8* ??

#5 Post by **John_Heard** » Wed Mar 19, 2008 1:36 pm

Yeah, that usually looks pretty good. That's one step colder than what I usually run N/A.

ERV JR · #6 Post by **ERV JR** » Thu Mar 20, 2008 11:02 am

John_Heard wrote:Yeah, that usually looks pretty good. That's one step colder than what I usually run N/A.

What ? So you run a 7 N/A ? On a 200 we usually run a 9, and over that a 10,

#7 Post by **John_Heard** » Thu Mar 20, 2008 11:17 am

Each engines different I guess. Yes I run a 7 on the motor, typically -8 for around a 200 shot but not much more and 9 up to around 400 and 10 over that.

79 Camaro · #8 Post by **79 Camaro** » Thu Mar 20, 2008 12:27 pm

John_Heard wrote:Each engines different I guess. Yes I run a 7 on the motor, typically -8 for around a 200 shot but not much more and 9 up to around 400 and 10 over that.

I agree with John, I have used NGK-7 on motor and a NGK-8 on the spray that was about a 175 shot or so and has worked out fine. But every engine is different.

Spark plugs for nitrous use

Spark plugs for nitrous use

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