L79 Spark Plug

[Vincent Jacovetty]

I know this has most likely been asked a zillion times, but I'm new to this, so here goes. What is the best plug to use in a 1967 327/350hp driver? Thanks in advance for the help.

[Duke W.]

Re: L79 Spark Plug

The old AC 45 was the best plug for normal driving, but AC does not make
non-resistor plugs anymore, so I suggest the Denso W14-U or the NGK B4.

These are both quality non-resistor plugs that are the same heat range as AC "5". The "4" in AC 45 means its a 14 mm plug.

Duke

[Duke W.]

Re: L79 Spark Plug

The old AC 45 was the best plug for normal driving, but AC does not make
non-resistor plugs anymore, so I suggest the Denso W14-U or the NGK B4.

These are both quality non-resistor plugs that are the same heat range as AC "5". The "4" in AC 45 means its a 14 mm plug.

Duke

[Vincent Jacovetty]

Re: L79 Spark Plug

Thanks for the info

[Vincent Jacovetty]

Re: L79 Spark Plug

Thanks for the info