I searched and got several differnt answers, SO I will just ask the same question but with my set-up.

I will be getting my car tuned Saturday and will be pulling the plugs out and gapping them lower(forgot to have the shop gap them before setting the engine in the car!)

I am running a 383 with a D1SC with twin intercoolers. I plan on making around 15lbs of boost. I have a MSD digital 6+ and the stock coil. I have autolite 103's and need to know what gap I should start with?

Thanks!

 

I honestly don't think the gap matters that much. I've tried every gap between .020 and .050 with no change in power. I settled on .040 since it was half way between what the manufacturer suggests and what the internet guru's suggest.

 

I ran mine at .035 up to 18psi.

 

I just put some new 104's in at 0.040"

-Scott.