D.U.I. Ignition and HEI for 67-72 trucks

[dan468]

What is everyone's opinion on DUI HEI distributors? There web site is pretty sweet; type in your engine info and presto, custom tuned spark and good prices too boot. Also, to change to a HEI ignition I was told to eliminate the factory resistor wire on the lead to the distributor which will make the supply 12-volt. I did that and everything works fine, however, I'd like to know if everything is up to full potential.

Thanks in advance for all responses!!!!

[kwmech]

They have an awesome product. I have used them a couple of times in jeeps and such. But for a chevrolet, why not just use a factory distibutor? unless you are looking for something that is tricked out

[dan468]

Originally Posted by kwmech

They have an awesome product. I have used them a couple of times in jeeps and such. But for a chevrolet, why not just use a factory distibutor? unless you are looking for something that is tricked out

I have a lot of $ in the engine and I didn't think I should stop at the distributer. The fact that they do the advance for you is pretty enticing.

[diggertodd]

I'm running the DUI and the 18v voltage adapter, work flawlessly, with no other modificationss, moved the jets up 4 sizes, and that is noticable horsepower.

Did a magazine test on a 880 hp small block on a dyno at Ohio Crankshaft - HEI did everything for that engine that a MSD offered in side by side testing = good bunch of folks at Davis Unified Ignitions

[dan468]

Is what I did when I removed the "resistor wire" what needs to be done? Or do I need anything else?

[dan468]

Originally Posted by dan468

Is what I did when I removed the "resistor wire" what needs to be done? Or do I need anything else?

Anyone? anyone?

[short69]

yep, all an HEI needs is a 12V supply thats hot on RUN and START. It also helps to have 10 guage wire.

[dan468]

Originally Posted by short69

yep, all an HEI needs is a 12V supply thats hot on RUN and START. It also helps to have 10 guage wire.

sweet...Thanks!!