[lovehamr]

Hi everyone, been a lurker for some time and finally signed up. Had to add my 2 cents in on the MSD thing. One thing that hasn't been mentioned in this thread is that, when using the MSD box, the only thing your distributor is doing is acting as a switch and only for a few milliamps at that. What this means is, that because the distributor is carrying such a small a load, you can still run a points type ignition and for all practical intents the points will last forever, never worrying about point gap or dwell. That means no worries about modules going bad in the distributor etc. How many here have gone through multiple "unilights" or some form of distributor module? If you look at the wiring diagram for the MSD you'll notice that the distributor is not wired to the coil but rather to the MSD box which in-turn has control of the coil. The advantage of the point setup is multiplied because of this. If the MSD box ever does go out (neither of mine ever have) then the connections at the coil can be jumped with a small wire included with the box, allowing the standard ignition system to operate. This power routing is also what makes me sure the rev-limiter function would work with your Hall effect triggering system (pertronix). The MSD box doesn’t care what’s triggering it - whether that is a set of points (mechanical switch), a unilight (optical switch) or a Hall effect trigger like yours or for that matter a Ford Duraspark.

All that being said, anyone who hasn’t started their high performance engine on a nice cold morning with an MSD really doesn’t know what they’re missing, the multiple sparks make the engine much more forgiving of A/F ratios that aren’t perfect.