View Full Version : MSD 6 Series

10-07-05, 05:07 PM
Hello guys, having modified a 600 CFM Holly for A PAL on 350 Chevy in a Python with very favorable results he was persuaded to buy the above at Real Steel in addition to leads and coil:rolleyes: . I know the gap has to be increased to around 50-60 thou re plugs. Should I also fit harder (colder plugs) with this installation???? Osgood.