Spark plug for the 378 modified CB/CL360

[ridesolo]

Question for the owners of 378 modified 360s: Is there a better spark plug than the stock spec to use in a 378?

 

[Sderbyshire]

I used stock in my 390 and ot ran fine

 

[irk miller]

B8ES. No reason to change, except you can do without the resistor plugs (BR8ES), especially if you're running resistor caps. Might not hurt to go hotter, but I don't think it's necessary. Boring it doesn't really change your plug needs.