Hey.. I have the factory AC-Delco HEI dizzy in my truck... and its now residing it its 4th motor(Im thinkin about.... 240,000 mi. on it). It and my AC compressor are the only factory parts left on it actually....

Anyway, I just replaced the electronic module a couple months ago, and its acting up again. The gear drive is visibly very worn, and it needs to be replaced.

So... what HEI dizzy would you guys recommend I go with?

I Dont know much about distributors, or how they work. But mine has an internal coil(I believe... I mean, I've never seen a coil connected to it). Can someone explain what a coil is, and what it does? I have an autometer tach.. and my new dizzy needs to be able to work with it(I heard MSD Dizzy's dont workwith Autometer stuff?)

Im on a very limited budget, but it is my birthday in a few days... =D

The MSD Pro Billet complete HEI is an obvious choice... but it certainly isnt cheap. Is it worth the money? And, will it be fine with my Tach?

My friend has a Mallory Hi-fire HEI unit, and he really likes it. But I heard its not an actual HEI- its a Photo-cell unit. Anyone clarify?





Sorry for all the questions!!!! :confused:

-Tanner

A book could be written answering your questions, I'll try to be brief. Your module may be acting up because of a lack of the proper lube under it in its' installation. Those modules need to be lubed with dielectric grease or they will over heat. I reccomend a stock GM HEI (one with the vacuum canister/ non-vacuum canister HEI's need the on board computer to work). An ignition coil changes a relitively low voltage (6 to 14 volts) into very high (35,000 or so volts) charge. This increase in voltage is only for a fraction of a second, and the amperage is very small, but all it needs to do, is jump the electrodes in a spark plug. An Autometer tach "should" work with a MSD distributor. A pro billet distributor is worth the money IF you need its' extra super-de-duper features (if your engine is basically stock, a pro billet distributor is overkill). A photo cell distributor is different in the means of triggering the ignition to fire. In my experience, a plain jane GM HEI is plenty for a street driven vehicle. I hope I haven't been too brief, or too wordy.

I've thought about just a factory replacement... But my truck is a street/strip vehicle, and its nearing the 13's quickly.

Im looking for something on the performance side..

I'll jus spring for the MSD. I've always heard great things about it... not to mention they look great =)

Thanks!

MSD claims that their distributor has much better than stock performance at higher RPMs. If this is an issue for you, it might make a difference.

Brian

well... my motor builds optimum power from about 2000-6000 RPM... My 1-2 shift is at 5600, my 2-3 is at 5800... So its not like its that really high revving.

Im just worried that my drive gear being so worn will start causing issues

If you're willing to spend the money for the billet, get a DUI from www.performancedistributors.com . They come tuned for your application, all you will have to do is drop it in and set the initial timing.