Another latecomer to the thread. Most of my ignition upgrades have been driven by other changes to the car.
My first ignition upgrade was a Pertronix Ignitor. I had no real complaints about it on a Super Six'ed slant. It is good for what it is, which is not a high performance ignition, just a maintenance free and easily installed little module.
But when I went with a turbo/EFI setup, I wanted computer controlled ignition, which the points weren't made for. So I went with a GM 7 pin HEI module. Another basic no-complaints thing that's hotter than a Pertronix from all accounts.
Then I ditched the itsy bitsy Mitsubishi turbo for a new GT40 turbo the size of a basketball. And I had a couple doubts that the HEI would cut it, so I went and bought an MSD-6A box and Blaster coil. The Blaster coil was actually their epoxy potted version I had lying around from another project.
But with some of the new developments in ignition systems and some of the new things that we've picked up at work, I'm starting to get curious about what really is the hottest and what's just hype. So I'm planning a really crazy dyno shootout once I get the Dart running. Here are the candidates I plan to pit against each other.
1. MSD 6A, crank triggered - this is going to be the baseline.
2. MSD 6A triggered using a distributor trigger to see how the accuracy changes timing.
3. GM HEI module with the MSD coil.
4. A Ford EDIS module with either a stock Ford coil pack or a Chrysler LH platform coil pack. This one's supposed to be one of the hotter factory ignition systems.
5. If I can find one for the test, a Mitsubishi 3000GT VR4 ignition. Another supposedly very hot factory setup.
6. Stock LS1 coils.
7. Possibly a competing CDI box similar to the 6A to see if the MSD is about the same as other brands.
8. A player to be named later.
I'm definitely wondering how the 6A box stacks up against some of the newer developments - it still works quite well, but it's 20 year old technology.