Big Block Chevy Ignition system

[[email protected]]

Never been a big MSD fan what's everyone's choices? Been looking at petronix. Have been running locked out HEI last few I've done.

[225digger]

msd

[Matt Cramer]

There isn't a one size fits all choice. Some questions to narrow it down:

1. What RPM will you be running?
2. Any forced induction? If so, how much boost / nitrous?
3. Carb or EFI? If it's EFI, what engine management?
4. What sort of fuel?
5. Any sorts of extra features like a two step, traction control, etc?

[[email protected]]

Carb
No boost
No power adder
No electronics
6500 rpm max
Pump gas

[rodent4]

^^^^Points or a factory hei.

[[email protected]]

HWI is what I usually go with will probably do that again didn't know if anyone had tried the petronix distributor ignitor 3.

[83mc406]

On my Olds stock eliminator I installed a Pertronix in a aftermarket HEI distributor and so far it runs flawlessly. Starts instantly, rpm's to 6900 in the traps and does't miss a lick.

[bigblockmark]

DUI Ignition. HEI style but better components.

[[email protected]]

Mark.i was looking at those as well

[007dragracer]

Originally Posted by [email protected]

Never been a big MSD fan what's everyone's choices? Been looking at petronix. Have been running locked out HEI last few I've done.

Ran an HEI until this month and added an MSD billet distributor to the new 7AL2 I got, the spark is much better then that old HEI was. With the ST-125 you can see a spark that will just smack the outer shell along with the multi spark showing. Maybe my HEI pickup coil was just getting old. If you decide to use a Pertronix make sure you use their coil as they don't work very good without it.

[wolf Wengler]

I like the Crane Hi-6... I think FAST took them over now.
True CDI, read the timing at idle if you want.
Run it with a GM HEI didtributor as a trigger, used without the module.

[[email protected]]

Thanks guys I will check into and take a look at those options much appreciated.

[1Azgerman]

I have MSD setup on my new 496 in my 57- have yet to beat on it real hard yet still breaking in the new engine. However always had very good results with MSD ignition . When I purchased the car it had a 396 with HEI and It ran decent.

Steve

[Cautoworks]

Buddy had pretty good lucl with mallory digital box and unilite comp 9000 dist. Been bracket racing it 15 years

[juiced coupe 78]

Originally Posted by Cautoworks

Buddy had pretty good lucl with mallory digital box and unilite comp 9000 dist. Been bracket racing it 15 years

Same company as MSD now. Both owned by Holley.