Best plugs for my 440

[Terry's 65]

Can anyone give me some insight on which plugs might work best in my 440? It has been B&S to 512 ci in,
With eddy rmp performer heads, headers, msd billet distributor, msd 6 plus ignition box, fast efi duel throttle bodys
I live in northern ca. so it’s pretty hot these days

 

[Dennis H]

NGK's.

 

[Terry's 65]

what heat range?

 

[Rocketman]

champions

 

[Mr Belvedere 30144]

I run NGK V groove 3332 in my 440 6 barrel

 

[junkpile]

champions

Have to agree on the champions. No matter how rich or how hot these things kept working. And if everything is set correct on the cab end they are fantastic. Never had a fouling issue with the Champions ever.

 

[35desoto]

Champion J14y's