BBC Coil-Per-Cylinder [Archive]

Sparky65

03-19-2014, 02:41 PM

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

03-19-2014, 04:03 PM

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

Andrew

Derek@ModernSpeed

04-01-2014, 05:39 AM

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

04-03-2014, 07:49 PM

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

04-08-2014, 02:56 PM

I'm running CNP. Running a 36-1 wheel on the crank and 1 tooth on the distributor for the cam sync.
Crank trigger
https://static1.pt-content.com/images/pt/2014/04/c137f965-1.jpg

Took the distributor apart
https://static1.pt-content.com/images/pt/2014/04/5033ce2e-1.jpg

Cut down the base. Ground down all but one tooth
https://static1.pt-content.com/images/pt/2014/04/0981b2ee-1.jpg

Tapped for a CPS
https://static1.pt-content.com/images/pt/2014/04/995705dd-1.jpg

Altogether

https://static1.pt-content.com/images/pt/2014/04/ef8fa766-1.jpg

Sparky65

04-23-2014, 03:18 PM

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

05-06-2014, 01:15 AM

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