[true10]

i have a 385 ci. small chevy w/gm 18 degree heads 363 high port model can you tell me what plug worked for you .used ngk on last motor just wanted to get some opinions.fyi have bill travato solenoids with his tune up some where in the 400 to 450hp area.thanks for your time.
Ron

 

[Monty Mikho]

I think the NGK's are the best bet. I used autolites and they were pretty good plugs but the thick ground strap kinda scared me..

 

[Jim Monson]

I used NGK "10" heat range for a similar combo.

 

[Rick Miller]

. I used autolites and they were pretty good plugs but the thick ground strap kinda scared me..

Don't worry, they're thick but they burn off too.