What spark plugs and gap should i be running? Motor is a forged 383 with ported stock heads and around 12:1 compression. I was thinking a tr6 with around a .40 gap. Is this correct?

 

Thats exactly what I'm running.

 

how many rpms do you run your setup to? I probably wont run mine to more than 6800-6900rpm.

 

6800, I do run an accel coil. I dont know if that matters. Ive run it all the way to 7k before with an open y pipe and it was fine, but my exhaust kinda kills it up that high so i set the limiter at 6800 and normally shift about 6600.