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I couldn't find on Edelbrock's web site. Can anyone recommend spark plugs/gap for their performer aluminum heads for 5.0? Thanks.
 

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Autolite 3924's seem to be the baseline plug for aftermarket aluminum cylinder heads. I ended up going with an NGK plug with a colder heat range, that seemed to make my 306 run best with the Trick Flow heads.

You'll have to do some experimenting to see what your engine likes.
 
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