Thread: gapping 104's?

Ok, so while we're on this topic.....

Right now I have a 2004 L67 (Monte Carlo SS) with TOG's, 3.4" pulley, cai, and stock wires and coil packs. I'm running Autolite 104's at 0.055 and they work great. Haven't tried going up to 0.060, but just haven't gotten the chance yet.

That said, next weekend I will be adding a gen 5 blower, N* TB, stage 2 intercooler, modded 1.9 rockers, 42.5's, and most likely start with a 3.25" pulley and work my way down....

So, with the new setup do you guys think that I should start out with the 104's at 0.055?
Or am I most likely gonna have to use a closer gap?
Or am I really just gonna have to figure it out by gapping the plugs and checking for misfires?

-Riggs.

Will to small of a gap cause misfires?

Originally Posted by kissmyss

Will to small of a gap cause misfires?

no, too big of a gap will.

Originally Posted by BiggRiggs

Ok, so while we're on this topic.....

Right now I have a 2004 L67 (Monte Carlo SS) with TOG's, 3.4" pulley, cai, and stock wires and coil packs. I'm running Autolite 104's at 0.055 and they work great. Haven't tried going up to 0.060, but just haven't gotten the chance yet.

That said, next weekend I will be adding a gen 5 blower, N* TB, stage 2 intercooler, modded 1.9 rockers, 42.5's, and most likely start with a 3.25" pulley and work my way down....

So, with the new setup do you guys think that I should start out with the 104's at 0.055?
Or am I most likely gonna have to use a closer gap?
Or am I really just gonna have to figure it out by gapping the plugs and checking for misfires?

-Riggs.

i would start with 103s right away since youre going to be running smaller pullies. itll help out just that much more. i would start out with about a .052" gap and see if it flys. unfortuneately yes, youll have to put them in and then run it and check for misfires.