1966 318 2 BBL Poly spark plugs

[1966Canuck]

hello all;

I am chasing down a vibration/resonation in my 66 Coronet (stock engine) and I am going to change out the spark plugs in case it is a misfire.
Anyone have recommendations on the best spark plugs application for this old girl ?
Thanks

 

[toolmanmike]

It came with Champions. That's what I would use. 63's are what's listed. More Information for CHAMPION 63