what are you guys running for spark plugs on your forced induction pushrod 5.0s? i have a 1994 cobra and i am in need of some colder plugs. any help with part #s or anything is appreciated!
I cant remember if the plug is different from a gt40 to a gt40p head. I use Autolight 103 in my gt40p heads gapped at .32" with 15psi on a vortech. Thats a 94 gt stock bottom end with those heads on it.
BTW your dyno #s seem very low for 15psi :??: