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Old 02-13-2003, 04:08 PM
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Talking 351W Distributor Choices....

Hey all,
I'm putting a 351W into my 34 Coupe and have a few questions about the distributor options I have. I was leaning to the Mallory Unilite and compatable coil and was wondering if anyone else has used one? I've looked into MSD and not ready to take out another mortgage to just buy a distributor for this engine! I'm sure they are the best..but holey schmoley. What about Accel..they make a Billet unilite comparable to the Mallory unit. Should I go with mechanical or vacuum advance? What's the pros/cons of each? Thanks for the help...


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Old 02-13-2003, 04:17 PM
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Vacuum advance will give you MUUUUCH better gas mileage. Itll advance the timing when you're cruising so you dont have to give it as much gas to keep it going.

Mechanical advance is more for racing, advances strictly on engine speed.

I wish i knew this before i bought mine. I have a 302 with an MSD mechanical advance dist. and I get like 10mpg
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Old 02-13-2003, 04:50 PM
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if you opt for the mallory unilite be sure to install their power filter (protects the module) and keep a spare module ( at $90.00) cause no local parts store has them in stock. if it dies,you must have 1 sent to you ( no fun a few miles or more from nowhere). that is the only problem with the unilte i`m aware of. i got this info from another rodder right after i put a unilite in my rod (351c),i`m glad i took the advise. about a year later,the module died on my way home on the interstate about 30 minutes from my home. in 10 minutes,new module installed & back on my way.
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Old 02-13-2003, 05:06 PM
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Just my opinion, but I would stay away from buying an MSD distributor. I have heard good things about their boxes but I have added links to two older threads about my troubles with MSD's distributors. I finally settled on a Mallory Unilite with vacuum advance, their chrome coil, and a filter to prevent voltage spikes to the module. I got all this for less than just the MSD distributor and my engine never ran so good. It also installed in like ten minutes. I was contemplating adding a HyFire ignition box (also from Mallory) to provide multiple sparks per combustion event (like the MSD box) but so far she's running great the way she is. I would recommend Mallory to anyone. One note: the Unilite requires a ballast resistor or resistance wire ignition feed but uses full battery voltage if using the HyFire box.

<a href="http://www.hotrodders.com/cgibin/ubb/ultimatebb.cgi?ubb=get_topic&f=19&t=001490" target="_blank">screw MSD</a>

<a href="http://www.hotrodders.com/cgibin/ubb/ultimatebb.cgi?ubb=get_topic&f=19&t=001530" target="_blank">MSD sucks-Mallory rules</a>
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Old 02-13-2003, 07:05 PM
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I learned a long time ago to carry a spare lite module, had one go bad at a show in St Ignace, Thats Youper for never heard if a unilite, three days away!
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Old 02-14-2003, 03:15 PM
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You can't go wrong with the Duraspark and whatevery ignition box you choose. Some say the stock Mopar box saturates the coil better than just about anything out there.
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