Spark plug choice
Thread Starter
Intermediate
Joined: Jul 2010
Posts: 37
Likes: 0
From: Fowlerville Mi.
Spark plug choice
Hello all, just finishing up a top end upgrade on my '77' and noticed that Edelbrock recommendes Champion RC12YC spark plugs for their Performer Heads. 14mm 3/4" reach gasketed seat. Ok I look it up and thats a tractor plug. Anyone use these? if so what gap? Sometimes its the little things, thanks for the help.
Melting Slicks
Joined: May 2004
Posts: 2,743
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From: Gulf of America
2023 C7 of the Year Finalist - Unmodified
2018 C3 of Year Finalist
I'm running the Edelbrock RPM heads also. Been running the recommended Champion RC12YC plugs over 8 years/many miles now with no problems. Cheap enough to change every couple of years. I'm running mine gapped at .040 with the MSD 6AL.
