I prefer magnetos. low maintenance and no need for a power wire, just a ground.

I think I have used most every thing out there both on the street and strip. I definatly prefer GM HEI. You can usually set it and forget it. Aftermarket modules can pick them up a little on the oscillascpe but not enough to notice on the street or track. A coil upgrade is needed if you are running rich on purpose (racing application). Remember that if your running a normal mixture the firing kv should be around 13,000 volts. The stock coil will hit 40,000 easy and the aftermarket 50,000 +. The duration of the spark only needs to be around 1 milli second. If you timing is right you can light a ton of fuel and make a gob of horsepower. As for MSD: Works good. If your timing is off, it will cover a multitude of sins with that long pulse. Most people don't work hard enough to get correct timing in non-stock applications. In other works, if you have a stroker motor, radical cam and aftermarket heads stock base timing is not going to get it. Stock advance probably won't either. Don't spend a bunch of money on different boxes until you get the timing curve right. (you can do it yourself an advance kit, a good timing light and a few hours of fooling around or you can pay some one to put it on a chassis dyno with a scope for a few bucks.

Ditto tuneup427. Not much of a racer myself, but dealing with stock Mopar/Ford seems to always make me think more thank stock GM HEI units.

I have used about all there are on the market. I prefer Accell when I can find one that fita the application. I guess If I had to choose, money not an issue I'd use the MSD 6A. Reliable, good tech spt, and you get whay you pay for.

unilite Over many years these units have impressed me. For GM engines with a carb. it's hard to beat HEI untill you get to radicle. HEI is a simple self contained unit. most other factory dist. have electricle wires traveling throught
to modules pcm etc(I rember the EST HEI exception).This could go on so I'll tell you why the uni. Many years ago I changed out the points in my old Ford pu, made a set of red mallory wires boy were they pretty and this is a true story. I set the truck for emissions it took a while to finally get it when the numbers were right off to the government sniffer withought the air cleaner big mistake. I sat in line in near 100 degree weather finally as the temp gauge rose I was probed idle test only guess what it past zero hydrocarbens. Only a block away I goosed it in victory this 351 was near melt down here is where happy turns to fear the lean boiling carter back fired through the carb. This caused a fire tried to restart,close the choke even blowing didn't work. Lucky me I had a fire extinquisher. I squeased the trigger nothing came out the fire was growing then my glass fuel filter exploded this thing was raging. There was nothing to do but through dirt on it then my lo side ac hose blew R 12+fire not good finally a nearby shop came with a working extiquisher. Back to the uni. The carb was melted my wires gone the uni cap n rotor was a glob of dirt and red plastic the electric wires were gone. After rebuilding the engine I cleaned up re wired the dist using the original module it worked! To this day 7 years later or so it's never let me down never needed a module etc. With all the bad I learned alot and it's the first engine my son helped build plus it was a good reason to up grade. one-arm-dude




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I like accel because it is cheap and reliable. A lot of people will prefer MSD and there are good, but there are others that will do just as good of a job for cheaper. All MSD means is multiple spark disscharge and is most noticeable at low rpm's. Because at high rpms it will become pretty much a singal spark anyways, it will keep the spark more stable though.