[Cliff R]

Pertronix is NOT an upgrade from a good stock set of points. Like every other type of aftermarket points conversion or bug-zapping distributor they are going to fail or cause issues. Not a matter of "if", it's a matter of "when".

Not only do they fail but I've ran into a lot of them that don't work well at high RPM's and of course the owner blames the carburetor. The last time this happened was when one of my customers had his fresh 454 Chevy LS5 engine on the dyno. The dyno operator HATED Q-jets and even worse those "flat" cast iron intakes used on the big 454's. The engine wasn't making chit for power and DONE by 4500rpms. Of course the engine builder/dyno operator is hitting my phone and I'm getting the "I told you that Quadrajunk carb and POS iron intake wouldn't feed my engine" crap.

The best pull they made was 425hp @ 4500rpms then it just fell off the graph. I asked them about fuel delivery, etc and finally got around to the distributor and got a very nasty response that he built it for the engine and set the curve to be all-in by 2800rpms and it was set exactly to 36 degrees total timing. Then he mentioned that he installed a Pertronix to replace the points. I told him to toss that POS in the trash can and put the points back in it. Reluctantly they did so and the very next pull was 587hp @ 5800rpm's!

That's about the 200th time I've seen that sort of thing with aftermarket bug-zapping crap. I'm telling anyone on here not to use them because my comments typically get responses where folks have used them succesfully on everything they've owned since Moby Dick was a minnow. I'm only saying that doing this sort of thing full time for decades I've ran into WAY too many issues with those parts and will not use any of them........FWIW......