Msd ignition plug gap ?????

[younggun2.0]

I have a 383 with eddy heads and a pretty big cam. 250@ .050 .525 lift. I have a complete MSD ignition.

MSD 6AL
MSD PRO BILLET DIZZY
MSD BLASTER 2 COIL
MSD 8.5MM RACE WIRES.

I have read that you can run up to .060 on the plug gaps. I am totally new to anything other than stock specs on plug gap. what do you guys run with the hotter ignition?

 

[pettybludart]

I run a .050 gap with my eddy headed 410 sb.I run autolite race plugs,been this way for 3 yrs.I usually replace plugs at the start of the race season.

Complete MSD 7AL-2 step,Dizzy,wires,cap/rotor with SS Blaster coil.

 

[younggun2.0]

I run a .050 gap with my eddy headed 410 sb.I run autolite race plugs,been this way for 3 yrs.I usually replace plugs at the start of the race season.

Complete MSD 7AL-2 step,Dizzy,wires,cap/rotor with SS Blaster coil.

I currently have my plugs gapped at .035 per the factory specs. i wonder if opening up the gap will effect my air fuel condition. just got timing all dialed in and its still running too rich. I am just trying to make sure all other variables are in check before i start tweaking on the carb.

 

[nitrojunkee]

I would definitely try .050-.060 with your set up. If you were running boost, then I would stay where you are at, or go down to .025-.028.

The whole theory behind the multiple spark discharge, is that you can supposedly run a wider gap because of the hotter spark. Going wider on your gap, may in fact clean up some of your issue.

Your car is sick, by the way!!!

 

[pettybludart]

I,m sure MSD recommends a .050 gap when running their electronics.I,m no carb guru,but would step down a couple jet sizes after gapping to .050,then check plugs.Others will chime in with their experiences.

 

[younggun2.0]

i have yet to get a vacuum gauge on the manifold to set the 4 corner idle mixture screws. That and the carb back fired twice pretty good when i first started it for the initial run in on the cam. My bet is the power valve blew.

 

[winstoninwisc]

mad calls for .050 that .015 really make a difference. Id like to see a dyno pull on plug gap it sure feels like 30 hp difference it will deff, feel like a new motor
would never go back open them up it will really come alive