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Discussion Starter #1
95 turbo cobra
I've always ran autolite 3923 plugs

In need of fresh plugs for dyno....


I'm contemplating doing the NGK 4554 plugs. it's it really worth the extra money?

autolite or ngk, What is your poison?

(aftermarket heads only)
 

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Been using the Autolites in mine. See no reason to change.
 

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I had problems with autolites before when running higher boost.

switched over to NGK's and havent look back since...the NGK's i buy are only $2.49 each from NAPA
 

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Discussion Starter #7
yeah, there's nothing wrong with the autolite I run now. so why change them...


so I'm running msd digital 6 plus box, msd hvc coil, dui distributor abd tfi mod, live wires 10mm.. what gap would ysll run? about to get tuned, probably going for 530 hp
turbo. I think their at .30
 
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