89 mustang

ok u guys i havent been on here for ever but any ways i was woundering wat would be the best gap to run on my 347 with my set up? i have them set @ .038 right now but the car runs really rich.

347 stroker trick flow heads and cam, track heat intake 75mm tb 76 maf, 30lb injectors

ctgreddy

i've got mine set at whatever stock is. if it's really rich you obviously need to open it up some but if its "really" rich then just gapping out the plugs prolly won't take care of it.

89 mustang

ill give that a shot and get some new plugs also.

nitrous_bob

if you don't spray it over 100 hp go about .042".046" stock is .056" if i'm not mistaken but i prefer smaller plug gapping

89 mustang

ok i my gap is set at 30. it seems to like it. i did go from 35 to 32 and 30 was the sweet spot now it dident fix my rich proble but i did fined the problem my mass air meter had the wrong tube in it. lol