MotorHead

My motor stopped pulling at 5 grand last time I had it dynoed and I want to eliminate all weak links like the stock ignition and fuel pump etc.

Would an MSD 6AL igintion be good choice ?

Also like to know how it is hooked up, does it replace the HEI coil on top of the distibutor ? Have no experience with this, thanks.

gdh

Maybe you should get the Blaster2 or 3 coil as well, they are not very expensive and will give you 45 - 50000 v, I think our stock is 30000

Fevre

Motorhead

Take a look at some those HEI cap and coil replacements that allow higher revs', can;t find them in Summit's catalog but it seems I have seen some before. Like you said, the stock one's seem to crap out at 5000, or so I've heard.

Rumpity Rump

Capacitive Discharge Ignition Systems, like MSD, really pack a punch compared to HEI , especially if the engine has been modified . Throttle response is better and idle is smoother . You can open up your plug gap more too, which gives better combustion. If you get an MSD6 , make sure you locate the box in a place where it will get lots of cool air flowing over it. I have mine in front of the radiator on the lower valance and extended the wires to the distributor.

RR

JIM

You dont need to spend the extra money for the MSD6 AL just go with the standard MSD 6A. (no rev limiter)
Im going with the MSD 6a and Msd distributor as soon as the budget allows.

bud snyder

Motorhead,
If you decide to change the whole distributor, the MSD Pro-Billet is a nice unit.
I have one and I am very pleased with it.
Bud

Rumpity Rump

For only a few dollars more, i went with the MSD6T instead of the 'L' . The MSD6T is the same as the 'L' except the internals are sprayed with some type of moisture protector, and its vibration proof also. I have mine sitting on 1" high rubber grommets to protect it even more...and , to allow air to go 'under' the MSD box for greater cooling.

RR

gdh

I just installed the Ignitor2 this morning, didn't start to break up until @ 6500. With my points I was breaking up at 4k. Will see how the MSD 6AL and new coil (Blaster2) add to the ignition and performance. Always nice to be able to see how some add ons work piece meal. So the Pertronix is everything it advertised and will report back about the MSD as well.


[Modified by gdh, 6:44 PM 7/25/2002]

MotorHead

That is what I was thinking, I have a shift light, but I still think the rev limiter might be a good idea because you could miss a shift. I guess missing a shift would be the only reason for a rev limiter ?

nunus79

I ran a 6A w/shift light. There were many times that I felt like kicking my butt for not getting the 6AL for the rev limiting function. With the 6A, you can't just add on a rev limiter later.

When you start pushing your engine to the limit (and you WILL, don't fool yourself) you need to have some kind of safety net to allow you to get as aggressive as you can. Without it, you'll always hold back and not test the limit. What kind of fun is that?

BTW, I'm surprised gkull hasn't chimed in on this one yet. He loves the Crane box. It does have some advantages over the MSD box. You might want to check it out too.

Good Luck!
Norris

gkull

Ok Nunus, His motor has lots of the same parts as yours.

Go with a digital from Crane. I don't know if the offer is still good. but they were throwing in a free super coil. The Crane system has dial adjust rev control. I really like the jacks that came with it. If for some reason it fails or what ever. You just pop the input and output jacks and mate them together. Taking the Multispark out of the ignition loop.

Alwyn678

Good luck with the Pertronix II I had Nothing but Problems....along with countless others as well...I went thru two modules and neither worked properly..So I ripped it out bought a Mallory Dual point tach drive distributor and Blaster coil and it pulls fierce to 6500 and no break-up..starts instantly....BTW my average mileage out of the Pertronix unit was about 1,000 miles before it crapped out

zwede

Since everyone else is on the CD ignition bandwagon, I will have to be different. I really dislike CD ignitions. Think about it... If they are so great (better starting, mileage power emissions etc), why are they not on any new cars? Not even the 400 hp Z06 that revs to 6500? GM spends millions to research better combustion chambers and ports to improve power & emissions. How silly when all they needed to do was to add a MSD6A! :rolleyes:

Truth is a stock HEI will easily pull to 6000. 7000 with a better module. I have dyno graphs of my 454 pulling 6k with just a regular HEI.

I used to have a CD ignition. MSD6AL. Got it because I really wanted a rev limiter (had a carb back then). It fried within a year. Replaced it with a crane HI6. It lasted 3 months.

jimvette999

I would use this ignition on any car for any driving use. I don't care for the appearance of many MSD ignition parts and looks to me are important. I like Holly's product appearance and their perf. on side by side test in Car Craft showed them to be all but identical. Holly is also a name you can trust to be around like MSD. MSD is extremely popular in racing and street but if you look at their hardware, it's butt ugly...........in my opinion.

:seeya


[Modified by jimvette999, 10:57 AM 7/26/2002]

gdh

Good luck with the Pertronix II I had Nothing but Problems....along with countless others as well...I went thru two modules and neither worked properly..So I ripped it out bought a Mallory Dual point tach drive distributor and Blaster coil and it pulls fierce to 6500 and no break-up..starts instantly....BTW my average mileage out of the Pertronix unit was about 1,000 miles before it crapped out[/QUOTE]

Next year I will likely put in the MSD billet distributor but for now I hope it stays working. I only tend to put 2 - 3000 miles per year on the vette so hears hoping. :)

BB wowbagger

I`m runnin`with the MSD 6AL and i can strongly recommend it...No breakups at all..I would also recommend a bigger coil.... :cheers: :cheers: