Whats the correct sparkplug

Discussion of the 331-354-392 HEMIs.

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phil
Posts: 31
Joined: Sun Dec 28, 2003 6:07 am
Location: AUSTRALIA

Whats the correct sparkplug

Post by phil »

What is the correct sparkplug for a 331 chrysler i am using champion nj12y ??
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George
Posts: 697
Joined: Wed Aug 25, 2004 4:12 pm
Location: Fl

Post by George »

Depends on the head/year. The round ex. port heads take short reach plugs, the oval take long reach. the '54 book lists 4s-140 for round & 4gs-150 for oval
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