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#1
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Distributor for MSD6AL trigger
Hi all,
I'm looking to ditch my Mallory Unilite in favor of something with a vacuum advance for a car that will see mostly street use. I don't need one of those all-in-one distributors as I already have an MSD6AL and coil. I was considering the Edelbrock MaxFire Distributor Pontiac V8 326-455 EDL-22754. Anyone tried this out? Thoughts/comments?
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#2
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Used-but-usable Genuine GM HEI with the module bypassed. Nice wide terminal spacing. No worries about finding replacement caps 'n' rotors, or any other parts. Be sure to inspect the advance mechanisms for wear.
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The Following User Says Thank You to Schurkey For This Useful Post: | ||
#3
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I’ve used a HEI, no problems. ...Change out carbon button in cap to low?(IIRC) resistance unit.
You can easily put the module back in should you cook the MSD box., even roadside. MSD makes a simple plug and play harness. Or make your own. Keep stock module to coil wire harness with the module for roadside retrofit if needed. You can also easily trigger it with an OEM point dizzy and use your MSD coil. Use capable resistor plug wires. Never used an aftermarket dizzy one my Pontiacs.£§"» Last edited by STEELCITYFIREBIRD; 02-19-2020 at 01:08 AM. |
The Following User Says Thank You to STEELCITYFIREBIRD For This Useful Post: | ||
#4
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I use the factory points distributor to fire the MSD box in one of the cars here. Extremely simple and will never leave you stranded. If the box ever fails I simply swap 2 wires on the coil in a matter of seconds and drive away.
The other 2 cars, including a Pontiac, use an MSD distributor with vacuum advance to fire an MSD box. Both of these setups have been in service for more than 20 years now and have been flawless. Just depends on what you have available to you, what you're willing to setup and deal with, and what you're willing to spend. |
#5
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Quote:
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#6
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I have used a PONTIAC factory 1965 Transistor Ignition distributor to trigger my MSD Box.
Works perfectly with the advance curve and the vacuum distributor can. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#7
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On the Pontiac it's an 8528, which is machined to accept a vacuum advance, they just don't supply it. So I added a vacuum advance to it, you can see in the picture.
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#8
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I thank you very much. Didn't realize you could add the advance to that unit. Wish I could do this for the Mallory that I have.
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear Last edited by punkin; 02-21-2020 at 01:48 PM. |
#9
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I've used many a GM points dizzy to fire msd!
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1970 amc rebel 4-door, faded blue paint,290 emblems on car, 455 under the hood.Turbo 400,3.15 gear. Best so far 1/8 et,8.90 on street tires, Since that I have added 400 heads. I call it a rat sleeper. |
#10
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Although not cheap the MSD Pro billet PART# 8563 is a great trouble free distributor but it's too bad they don't offer this unit with a vacuum advance option so you can run it on the street. I have always wondered why they don't make it with a vacuum advance option if they did I'd run it on my 67 LeMans street car. What I have now is a factory points dist triggered with an MSD.
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Tim Corcoran |
#11
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I have nothing but regrets. About 20 years ago I tossed out the factory points unit and put the Mallory Unilite in when I started racing. Some lessons have to be learned the hard way I guess.
__________________
1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#12
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Now it seems like a roll reversal, they've changed the no vacuum advance unit to part number 8563 and now offer a vacuum advance on the 8528. |
#13
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They are all over E Bay for 30$. More for rare stuff. Even a cast iron unit for 15$. They are the best IMO. I run one, solid as it gets. I have not found one all worn out yet. Seen many a aluminum unit that needs rebuilding. Maybe they have a bigger bushing or oil it better. I trigger my 7AL with that distributor and never, ever have issues. Points last forever. 2 sets of points since 1990 and I changed them just because, nothing wrong with them. |
#14
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8528 is a ready-to-run all in one deal?
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#15
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Yes it is. Just need a good coil and wire it all up.
https://www.holley.com/products/igni...iac/parts/8528 Clay |
#16
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That is a very nice set up and works perfectly as described. I left the transistor ignition box in place and hid the wires so it looked like it was still in the circuit. Put the MSD in the car also hidden. May be a little hard to find the distributor now. If you have the room, a HEI for a trigger is the same idea.
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#17
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I'd rather have a single point distributor triggering a CD box like the Vertex Z-6 then a HEI... Get the blue Bosch coil (#00012) with 3-4 ohms and your set..
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