Any spark plug recommendations MP 360/390 crate engine

[zhandfull]

Any spark plug recommendations MP 360/390 crate engine? Running the factory electronic ignition.

 

[abodyjoe]

Autolite 65 or the NGk match.

 

[wheelsup73]

I ran Champions, RN9YC in my 360 with J heads

 

[UOP]

You're going to get a lot of different answers to this question. I personally run the NGK V-Power FR4 (early magnum oem spec plug), but the slightly colder V-Power ZFR6F-11 (later magnum oem spec) would also be a good choice.