Ignition Selection
#1157595
01/15/12 01:20 AM
01/15/12 01:20 AM
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Joined: Mar 2011
Posts: 183 Charleston, SC
bronco9588
OP
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OP
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Charleston, SC
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SO I am trying to learn a little bit more about ignitions. There are a lot of choices out there and I am still scratching my head. Anyways, I was wondering what y'alls opinion is of converting from the stock orange/ silver box to a HEI setup? I kinda like the DUI distributor from Performance Distributors. The coil, distributor, and Current modeling of my build (compcam's camquest), 3.55 gears, and gear vendors OD put a redline of about 5900-6000 rpm on the engine. 9.5:1 comp. Anyways, I am in need of purchasing a distributor and coil anyways... Should I look at the MSD/ Mallory 6AL also? I do want a rev. limiter on the setup. If not HEI from performance distributors, should I look elsewhere? Any input is appreciated.
'73 Charger Petty Blue, Black Vinyl, and Gill Slits
727 torque-flight
400 BB Chrysler
8 3/4 rear
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Re: Ignition Selection
[Re: bronco9588]
#1157596
01/15/12 08:35 AM
01/15/12 08:35 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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yes a myriad of choices. I'd suggest an MSD for the rev limiter. And an externally adjustable dist (Mallory/MP?). I'd check out FBO's stuff
live every 24 hour block of time like it's your last day on earth
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Re: Ignition Selection
[Re: bronco9588]
#1157603
01/16/12 06:01 PM
01/16/12 06:01 PM
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Joined: Mar 2011
Posts: 183 Charleston, SC
bronco9588
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Charleston, SC
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Would a orange or silver box be needed with a MSD 6?
I was thinking:
440source $100 rotor and fixing advance programmable 6AL-2 $350 blaster 2 coil $35
According to 440source, "such as an MSD 6A, 6AL, 7AL or equivalent, or a Chrysler style electronic control box".
It seems like an either or.
'73 Charger Petty Blue, Black Vinyl, and Gill Slits
727 torque-flight
400 BB Chrysler
8 3/4 rear
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Re: Ignition Selection
[Re: RapidRobert]
#1157605
01/16/12 09:30 PM
01/16/12 09:30 PM
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Joined: Mar 2011
Posts: 183 Charleston, SC
bronco9588
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Posts: 183
Charleston, SC
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the msd 6Al-2 programmable has a map sensor puickup which should work like vac advance
'73 Charger Petty Blue, Black Vinyl, and Gill Slits
727 torque-flight
400 BB Chrysler
8 3/4 rear
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Re: Ignition Selection
[Re: bronco9588]
#1157606
01/17/12 02:40 PM
01/17/12 02:40 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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Whatever else you do, get a new electronic distributor with a high performance curve. You'd be surprised how much difference it makes.
On to ignition boxes: The simplest for my money is to run your new dist's signal directly into either an Accel 300+, MSD 6 whatever, Crane Cams HI-6 or Mallory multispark box. No need for orange box or ballast resistor. Get the coil that matches the box.
Now, for the sake of completeness, you could run from the white wire on the MSD to the output of an orange or chrome box but I couldn't think of why you'd want to do that. Just one more part to fail.
I have two other pieces of advice: 1. Don't mount the box on the firewall. Most multi-spark CD boxes make a clicking sound that will come right through the firewall if that's where the box is mounted. 2. Buy the box used but not abused on the 'bay. I love the Accel 300+ because it is small, digital, has a settable rev limiter built in, and has as much spark energy as the MSD 6 or Crane HI-6. The most I have paid for one brand new in the box is $120, the least $55. Both had matching coils.
Good Luck, R.
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Re: Ignition Selection
[Re: RapidRobert]
#1157608
01/17/12 05:50 PM
01/17/12 05:50 PM
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Joined: Jan 2003
Posts: 1,359 Buzzard County, FL
IronWolf
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,359
Buzzard County, FL
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If any input is appreciated, here's mine:
If your budget allows, purchase a MSD "E-curve" distributor. Then, you can use the very nice HEI type wires. And, you can ditch the ballast resistor and crude ECU.
Finally, you can "program" the advance curve and rev limiter.
I haven't initialized mine yet . as I am waiting on other (suspension) parts.
Electronics have "advanced" in 40 years - what they had back then was great, but why use it now ?
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Re: Ignition Selection
[Re: IronWolf]
#1157609
01/17/12 06:06 PM
01/17/12 06:06 PM
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Joined: Mar 2011
Posts: 183 Charleston, SC
bronco9588
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Charleston, SC
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Quote:
If any input is appreciated, here's mine:
If your budget allows, purchase a MSD "E-curve" distributor. Then, you can use the very nice HEI type wires. And, you can ditch the ballast resistor and crude ECU.
Finally, you can "program" the advance curve and rev limiter.
I haven't initialized mine yet . as I am waiting on other (suspension) parts.
Electronics have "advanced" in 40 years - what they had back then was great, but why use it now ?
My projected setup will have the hei distributor cap plugs, gets rid of the ballast, and has the e-curve capabilites. The downside is that it won't all be internal to the distributor, but I am okay with that as a MSD 6 box looks professional. With the 6AL-2 programmable, I get 3 rev limiters, vacuum advance capabilities(done by retarding), supercharger, and nos capabilities. What more could a person ask for? Individual spark advance curves for each gear? Basically this box is one step short of MSD's 7 line.
'73 Charger Petty Blue, Black Vinyl, and Gill Slits
727 torque-flight
400 BB Chrysler
8 3/4 rear
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