Quote:

I love the discussion so far on this. I figured there would be a lot of opinions on this.

I am NOT drag racing this car and looking for 'increased performance' per se but maybe slightly nicer street manners in the form of smoother idle, smoother throttle response, etc from the hotter spark. I am not under any illusion that I am going to pick up any measureable horsepower or speed from simply gapping plugs.

I just wondered if I am leaving any benefits on the table by staying at the factory gap of 35 or if by gapping out, I am asking for other problems. Keep in mind this is a street car, first and foremost!

For example would having a larger gap and therfore a hotter spark help with pinging/starting/etc?

BTW, car has a 727 with a 3.55 SG behind it 28" tires 2400 stall.

the spark wont be any "hotter" with the larger gap it will be just that about .005 longer and very slightly longer in duration.