I had a couple ignition issues last season that brought up the disadvantages of the distributor ignition system I've been running for years. One happened when the motor ran rough and it turned out the center button on the bottom of the dist cap was burnt off. The rotor was blue and it was apparent that there was current loss that had gone on for a while. That and the usual signs of arcing at the end of the rotor show more current loss.
Then I had a small amount of misfiring at 20# turbo boost and 7000 rpm that pointed to that the ignition system didn't have the balls to fire a .035 plug gap at that rpm.
I decided to make the switch to individual coils.
I figured out that the coil charge time is .002 sec. for one coil to fire 4 plugs per revolution at 7000 rpm and can see the advantages of COP which multiplies that time by 8. Whenever the charge time gets below 5 ms the output is decreased.
Here's some interesting reading about it,
I am going to use a FAST XIM ignition box to fire the coils.
The LS1 coils have built in ignitors so all it takes is a 5 v signal to fire them.
I got the coils used for $ 100.00 A whole new set on ebay is $ 150. They've run these coils for over 10 years on passenger cars.
They have a GM factory 4 into 1 harness that connects them.
Guys on yellowbullet stated that they have run these coils on drag cars with 2000 hp.
Evidently these coils are pretty durable too,
I used all my old plug wires and have new terminals coming for the LS1 coils.
This will be the cleanest looking ignition system I've ever run. No more 45" long floppy wires. Now the longest plug wire will be 7"
You won't be able to see them in the boat.