Hi guys what plug gaps are you running with something like an Accel supercoil or equivalent? It looks like the stock TPI plug gaps are only like 0.035. I think I gapped to 0.055 or 0.060 last time I did plugs, is this way too much?

 

I'd stay at 0.035. Nice Ride man. what year is that a 81, was that a v6 in the past life?

 

It's a 77, it was originally a 305 auto but is now a 327 with a Holley Stealth Ram controlled by a MAF TPI computer that I burn chips for w/ a world class T5 trans. I wonder if my way too wide plug gap is causing the rich smell at idle that I can't get rid of no matter what I do to my MAF or O2 tables. Come to think of it I always gapped the plugs this wide even when it was carbed w/ HEI. Hmmm...

 

if you are using an msd box and higher output coil, you can gap em that wide.
but honestly it's a trial~n~error type of thing

you can start at 40 and increment from there to test it
sometimes going with a large gap can cause run on, or kick back

gap will also depend on compression, cam, etc...