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Discussion Starter · #1 ·
I am thinking about buying one of the DUI distributors for my 390. I was curious to see if anybody else had one and if they were an easy upgrade from the stock one. I am sure I know the answer to this one, but were you able to notice a difference between the 2 performance wise?
 

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I havent used one but I can give you my opinion of an HEI and a lot of distributor experience.

1 - Nice 1 wire package, but HUGE on a Ford up front.
2 - No performance gain over a properly curved ______(fill in the blank) distributor. Good hot spark, good setup, but it wont make any power if the timing curve is the same
3 - Easy to change the curve, like a Chevy (but also like an MSD too)
4 - Easy to buy modules anywhere (but modules are a bit less reliable with a points type voltage regulator....sometimes, depends on your luck)
5 - More difficult to hook up an MSD / rev limiter

If it were me, I'd buy a duraspark, have someone like Faron Rhodes recurve it, then I'd use it to trigger and MSD with Rev control

For similar price you'd have a betetr setup

The other options would be:
1 - Duraspark with duraspark box....near indestructible and cheap (be sure to recurve)
2 - Full MSD setup - Very nice and easy to tweak curve like a Chevy
 

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I have one in my 74 4x4 428. It was a very easy upgrade, good looking peace, now the truck don't die everytime I get a little water splashing up into it (big problem with the old points). Down side is kind of spendy I had to buy the dizzy plus I bought a set of MSD wires (stock ones won't work), and yes it is a little big.
As far as telling a diference I don't realy know I did this the same time I built the motor.
 

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Not an FE but I have one on my 289, huge performance difference for me, easy to install, and never had a problem with it.
 

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decent read on opinions
http://www.ford-trucks.com/forums/archive/index.php/t-76384-points%20to%20duraspark

if i were you i would go duraspark before anything else just use the late 80's 5.0 coil which puts out 3 times as much voltage and you will definately burn all the air fuel mixture. dui is the same as the gm version of the duraspark only for fords among others. i have burnt pertronix, duraspark is super cheap at autozone and is lifetime warrantee. and you can take any core back(such as your old point distributor)! stay stock and save your money.
http://users3.ev1.net/~bmarr/duraspark_ignition_upgrade.htm
 

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btw you can buy the distributor cap adapter or find it at the junkyard for all the old distributors^ some come with it, others dont. that prevents crossfiring, a good idea if using the 5.0 coil.
 

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Once you get the HEI distributor, maybe you can find some 396 emblems, and a Quadrajet. Might as well toss in an A4 compressor and a set of AC Delco plugs.

The Duraspark distributors are darn near bulletproof. Add an MSD box and coil and you have enough ignition to run 14:1 at 9000 rpm.

Greg
 

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Discussion Starter · #13 ·
That duraspark link was awesome. The pictures were big and clear. I believe I will be checking into the Duraspark. That way I can keep my original emblems and save some money
 
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