What is the recommended NGK spark plug for a 1966 318 engine ?
Tks,
Bob32268
Tks,
Bob32268
NGK Spark Plugs
- Thread starter bob32268
- Start date
Schultz64
Well-Known Member
Hi Bob. XR4 would be correct.
Thanks so much, really appreciate the info !
Bob32268
Bob32268
There were (2) 318s, the Poly and LA engine.
The LA 318 uses a longer reach plug than the Poly 318, the Poly 318 uses a shorter plug.
Just my $0.02....
Schultz64
Well-Known Member
To clarify the XR4 is for the 66 poly 318. The LA 318 came out in 67. That would be a different plug.
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