spark Plug selection for 528 Hemi

[67Vette427]

Hi,

Which spark plugs work good or are the best to run in the Hemi? 528 Ci, Aluminum heads, mild drag cam. Single plug, mopar Perf. Elec. ignition.

Thanks 

[Oldschool]

First off, let me say you made an excellent engine choice!   

I run Champion N9YC plugs on the street and Autolite AR52 when it's play time at the strip.....    

Both are gapped .035........            

[67Vette427]

Thanks Oldschool!

[falcon50flier]

Oldschool, you run them that tight with MSD? I have been tempted to close up the gap from the .040 - .050 MSD recommendation, but with the quality of gas, didn't want to accelerate potential fouling. With breaker points it always seemed to me hemis don't like a lot of plug gap, maybe all the way around regardless of spark energy (lack of quench, or??).