i just got some e street 1.90 1.60 heads and they recommend champion rc12yc plugs to start then change heat range as needed. is that the best plug for a 302 and a .512 lift cam with an edelbrock 600cfm performer carb and mallory uni lite dist. i work at a lawn mower shop for a living and that is the plug that alot of ohv small engines use. something about the same plugs my mower uses going in this motor but if thats the best, so be it

 

Yes,I also have the Edelbrocks and use the rc12yc`s as recommended and the heat range is spot on.

 

thanks im going to go with it. how does everyone feel about those E3 plugs?