327/365 spark plugs

[Don M.]

What is a good modern day plug to run in my 365hp?

[Louis T.]

Re: 327/365 spark plugs

Hi Don,





Regards,

Louis

[Tim S.]

Re: 327/365 spark plugs

Don,

I have been using Autolite's with great sucess. I would suggest 303's if you still have the original compression or perhaps 85's if the compression is in the 9-10:1 range. Best of luck!

Tim

[Jim T.]

Re: 327/365 spark plugs

I use J12 Champions in my 68 327/350HP. The service life I have experienced has been very good. I like using the more open tip design of the Champion plugs. Used them in my 70 350/300 as well.