massive reconfiguration time again.

318willrun said
I would not lean it out. I would NOT lean it out. I would pull it back up to 34* timing, fatten up the carbs, and run a hotter plug, like a RN12YC. This is the direction I'd start my ship in...……..

318willrun said
Then I stick to my theory. wrong heat range for the new cam and all the cylinder pressure. Not saying this is "for sure" the issue, but I'd try fattening up the carbs and running RN12YC. If it doesn't work, your out a little time and a set of plugs. BECAUSE...……. cudafever's picture is your plug, then I go back to my previous statement, it looks blistered. You may find yourself adding some performance that will be noticed by the seat of your pants

j par said
As was recommended by skewers on cudafevers thread I called NGK tech line.. the guy from what told him recommended one size hotter. I told him I was running the NGK 4554. He recommended the 4091. I think 318hasvalvesthatwillfly recommended a hotter plug as well I can't remember or somebody did... Anyways I got the plugs so we shall see...

Clear back on page 43. LOL..... you are the hardest person to help on the site :D :D In fact, I gave up trying for about 3 years, then I thought I'd give it another try LOL. :BangHead::BangHead::BangHead: Skewers to Cudafever to NGK, that sent you back to the same suggestion given by your good ole' pal ole' buddy..... 318willwin! LOL :poke: