Spark plugs
Hey gang:
I have a 64 cat with a 65 389 engine with a GM HEI distributor. It works great! However, I am not sure what gap I should use on the spark plugs. I feel sure it would be different that what is called for for the original ignition system. Any ideas? If this has been answered before I apologize for the inconvenience.
Thanks in advance.
Mike.
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