Wich spark plug do I use on my 400 engine
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Wich spark plug do I use on my 400 engine
Hi, im restoring my 1966 442 with a 400 engine. I made some modifications on the engine like: new mondello cam, performer intake, holley carb, new mallory dist, etc. now I need to install new spark plugs, can anyone tell me wich spark plugs are recommended to use in my car with this modifications? I build a street car
thanks
thanks
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