BBC Coil-Per-Cylinder

[Sparky65]

Is there any real benefit to using aftermarket LS style coils like Holley 556-112, MSD 82878 or Accel 140042 over OEM GM Gen IV LS parts (p/n 12611424) on my BBC EFI build?

[andrewb70]

If your BBC is naturally aspirated, I would say no.

Andrew

[Derek@ModernSpeed]

Agreed. If you are running N/A, there will be zero noticeable gain between the coils. If you are running a big power adder, get the high performance coils from Holley, or something similar.

[BBC71Nova]

So you are doing CNP ignition and just asking about the different coils or are you asking about CNP setup in general? I have wanted to do CNP but finding a spot for the coils, etc is a challenge. If you have or are planning to do CNP, what are you using for a cam sync?

Thanks!

[hessdawg]

I'm running CNP. Running a 36-1 wheel on the crank and 1 tooth on the distributor for the cam sync.
Crank trigger


Took the distributor apart


Cut down the base. Ground down all but one tooth


Tapped for a CPS


Altogether

[Sparky65]

So you are doing CNP ignition and just asking about the different coils or are you asking about CNP setup in general? I have wanted to do CNP but finding a spot for the coils, etc is a challenge. If you have or are planning to do CNP, what are you using for a cam sync?
Thanks!

ATI balancer with integral 58x and an EFI Connection 1X Cam Sync. Holley Dominator electronics.

[youngmuscle]

Is there any real benefit to using aftermarket LS style coils like Holley 556-112, MSD 82878 or Accel 140042 over OEM GM Gen IV LS parts (p/n 12611424) on my BBC EFI build?

I just bought the MSD coils, hopefully they work fine. Have you thought about where youll put the coils yet? Looking around Im not sure if I want to use the inner fender or maybe theres a bracket I can fabricat (or buy) that runs off the valve cover maybe. I know Holley said no more than 2 feet from the plugs to avoid interference so Ill put 4 on each side of the motor, just deciding where. Valve cover isnt an option, whats the beauty in running a BBC if theyre on the valve cover? lol