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Old 05-22-2008, 11:54 AM
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picking a new dist.

i have a old worn out HEI distributor and im looking to buy a new one. but im torn on which one to get.

i have a mild 350sbc, 650cfm carb, rpm air gap intake, 268h cam, hooker comp headers. id like one that sends a much stronger spark and i would also like to stay with a HEI style (coil on cap).

here on the ones im thinking about

havent heard many things about this but its a trusted name
http://www.jegs.com/i/MSD/121/8362/1...760090%7C10679

i read a bit about this one long time ago heard its really powerful and a good buy. but ive heard little to none about this brand.
http://www.jegs.com/i/Pertronix/751/...749237%7C10679

just saw this one seems pretty good.
http://www.jegs.com/i/Moroso/710/722...764383%7C10679

i dont know much about this brand but ive heard they make a good product.
http://www.jegs.com/i/Mallory/650/85...752904%7C10679


which one would be the best buy??? the engine has never seen higher then 6000rpms.


and what size plug wires are good for a powerful good spark???

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Old 05-22-2008, 01:37 PM
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They are all good brands and depending on who you talk to you will varying info based on personal preference or experience. If you dont actually need the large cap HEI style there are several smaller cap styles that look a lot cleaner and most are 1 wire hookup. You will however need to get an external coil for one of these setups.

If you are looking for a recommendation, I would go MSD or Mallory as ignition is their primary business. Moroso sells everything and probably just re-labels most items with their brand name.

Hope this helped and didnt just add more confusion.

Chet
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Old 05-22-2008, 02:26 PM
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I have had nothing but problems with those moroso durafire distributors. We have used them on two different circle track motors with brand new moroso wires and plugs that are gapped at .025-.030 which should limit the amount of stress on the ignition system. We take these motors to about 7800-8000 rpm.

The coils have burned out on both of the distributors one of them was bad right from the factory and one of them stopped working after about an hour of run time.

I am rapidly losing faith in that particular distributor. And at $200 plus you would think they would be a little better. The only saving grace will be their customer service we will see if they refund my money or give me a new coil or something. I will let you know.
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Old 05-22-2008, 05:27 PM
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Quote:
Originally Posted by T-bucket23
They are all good brands and depending on who you talk to you will varying info based on personal preference or experience. If you dont actually need the large cap HEI style there are several smaller cap styles that look a lot cleaner and most are 1 wire hookup. You will however need to get an external coil for one of these setups.

If you are looking for a recommendation, I would go MSD or Mallory as ignition is their primary business. Moroso sells everything and probably just re-labels most items with their brand name.

Hope this helped and didnt just add more confusion.

Chet

would i have to use an ignition box with the one wire distributors??? and can i hook up a tach to the dist??? i use my tach big time in the way i tune my car i go by what sounds and performs the best so the tach is my mine tunning tool.

i look into them for sure tho. im not in any rush to buy it but it is my next buy for the car.
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Old 05-22-2008, 05:38 PM
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I would go with the MSD dist. an make sure an use some good plug wires so it will be able to send all the energy to the plugs. Good luck.
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Old 05-22-2008, 05:41 PM
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is there such thing as 2 big when it comes to plug wires???
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Old 05-22-2008, 05:51 PM
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8.5mm wires are about as big as you need to go. They will fit the stock GM looms too and most aftermarket.

For me, money is very tight right now so my suggestion on a good driver or mild performance dist is This one here.

I've had mine for over 2 years now and not a lick of problems. My son dumped is $200 Accel and went with this one too. So far so good.

I know, it's not made in the USA, but what is anymore? It's made in Australia and has a 4 year warrantee. Guy has very good feedback too, one neg in 4000+ sales.

Just my 2 cents worth.

Mark
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Old 05-22-2008, 09:47 PM
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Distributor

I purchase 1 off Ebay. 65,000volt clear cap $50. Haven't had much luck with it though. Ran fine for a week or so. Now as soon as the engine gets up to operating temp it starts missing bad. Took a new stock cap off another engine but the stock rotor wont fit the ebay distributor? The center part of the rotor is too large to fit in the distributor shaft on the ebay 1? Does this sound like a bad coil, module? With the cap swap it still skips/misses bad.
Sorry didn't mean to get off post subject. I should've started a new 1.
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Old 05-22-2008, 09:55 PM
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I have a mallory unilite mech. advance with remote 50,000 coil--daily driver 75 nova 350/350--nary a missed beat

i would beware of the $50 -$100 products on evil bay-u get what u pay for

my 2 cents

fp

ps--don't think u can go wrong with the mallory unit from jegs
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Old 05-23-2008, 06:22 AM
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Quote:
Originally Posted by elcaminodragster
would i have to use an ignition box with the one wire distributors??? and can i hook up a tach to the dist??? i use my tach big time in the way i tune my car i go by what sounds and performs the best so the tach is my mine tunning tool.

i look into them for sure tho. im not in any rush to buy it but it is my next buy for the car.
No you dont need a box, they are "ready to run" and yes tach hookup would be to the negative side of the coil.
I personally have an MSD and an Accel and both work fine. I would recommend with any electronic distributor you buy a spare module and keep in in the glove box.
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Old 05-23-2008, 07:53 AM
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elcamino,

do pay attention to the unit's amps rating when comparing various dist....

way way over simplified but that is giving you a idea of how "robust" the SS board is for transistor heat handling capability....

that translates into life expectancy and how well it will work under extreme heat conditions

oem HEI is/was about 5.5amps....
aftermarket dist are anywhere from only 2-3 amps to 20amps (aka msd circle track model) worth of "reliability"
................................
SSedan,

"small to fair chance" it is ohms resistance on the neg supply side causing the module transistors to run hot and/or mis-fire....
rig a copper wire jumper from the batt neg to the dist body (and module ground wire if there is one) and see if it runs better....
for any 5VDC SS device....a rock solid/0 ohms resistance ground source path is a absolute must have!
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Old 05-23-2008, 10:47 AM
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i think im just gonna stick with my choice and get the msd street fire dist. and a set of there super conductor wires. at just over 200 bucks for both its a good buy in my book. msd is a really good brand they are only ignition so they know there stuff. and its relatively cheap. now i just got to get the money for it. . .

DARN GAS PRICES!!!!


thanks for the opinions
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Old 05-23-2008, 11:38 AM
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Make sure the plug boots are not too near your headers, they go soft and crumble if exposed to heat.
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Old 05-23-2008, 04:55 PM
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is that with the msd wires? because i have a couple wires really close to the headers and one is either touching or extremely close i cant tell (weird angle).

but im still thinking about getting the fiberglass sleeves to cover it.
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Old 05-23-2008, 11:37 PM
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Quote:
Originally Posted by red65mustang
elcamino,

................................
SSedan,

"small to fair chance" it is ohms resistance on the neg supply side causing the module transistors to run hot and/or mis-fire....
rig a copper wire jumper from the batt neg to the dist body (and module ground wire if there is one) and see if it runs better....
for any 5VDC SS device....a rock solid/0 ohms resistance ground source path is a absolute must have!
Thanks, I'll try the ground wire idea. By the way this is on a 71Chevy C10 350 4brl. I bypassed the resistor wire that ran to the points Distributor and ran a 12ga wire from HEI to a Ign. hot only terminal in the fuse box.
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