Anybody used the MSD GM High Energy Module....part # MSD-8364?

It looks from the picture that it replaces the capacitor......

I need to upgrade my ignition system....

Good, bad, worth the extra money?

 

As MSD states, it's used for non computer controlled HEI ignitions. This is the older large cap HEI systems with the coil in the top of the cap.

Unless there's some reason why you need this then just get a MSD6 box for an ignition.

The factory HEI module works fine to around 7000 rpm and for it's cost is still better than most aftermarket modules. The weak link in the system is the factory coil. If you're going to upgrade anything, use a good aftermarket coil first. Install it in a good cap with a low resistance rotor button.

Before you do anything, make sure the distributor isn't worn out. Many times someone thinks they have a bad ignition component and start changing everything. The distributor can actually be worn out instead. The weights can be worn out or seized not allowing proper ignition advance. The main shaft could be worn.

I ran a stock HEI with an Accell coil on my race car for 2 years.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block (times are for the current engine)

Best ET on a time slip: 11.447 altitude corrected to 10.99
Best MPH on a time slip: 119.42 altitude corrected to 124.86
Altitude corrected rear wheel HP: 493
Best 60 foot: 1.586

Racing at 3500 feet elevation with a typical race day over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley


[This message has been edited by Stephen 87 IROC (edited September 30, 2001).]

 

Stephen,

I have an old HEI non-computer disturbor in my Z28. I have removed all of the emissions and computer components.

I like the HEI configuration. It is very compact and doesn't take up extra space in an already cramped engine compartment.

I'm not familiar with how the MSD ignition would work. Could someone explain it to me?

 

It looks like it's just a replacement for the factory module. Remove all the stuff from the underside of the rotor and install their module.

I'd say just keep your factory module and as I stated above , just install an aftermarket "in cap coil" like the Accell Super Coil into a new Accell cap with rotor.

 

i have one i used in my blazer. it was a pain in the *** to put in, but even with the stock coil was a very noticable increase under higer rpm.

 

I went through the trouble of the MSD6Al system in my Camaro but really I did not notice any power gain. Granted its a very reliable system its not worth the $$$. You could get a nify accel distributor already built with a coil for 140$ from jegs /summit or most auto parts stores. here "Advanced auto" AKA "western auto" and checker, AKA "Kragen or ?shroks?" or somthing like that all carry accel distributors that are already buillt with most of the goodies.
Good luck!
SC

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85 Camaro, 355/400 "drag car" in moth ***** 13.1@ 101mph on its last season run.
Plans: Possibly add N20 for next season.
82 Firebird, 305/350 currently moth balled.
Current plans: Rebuild 305 with flat tops instead of the dished "cups" for pistons or slightly built 327 with the 58cc heads from the LG4, Upgrade the 2:73 to 3:73 or 3:42 and replace the turbo 350 with 700r4.


"Web site under construction"

G0D Bless.

 

Thanks alot for the input. I actually think I am going to go with the MSD6 series ignition box. I have purchased a cheap coil and module from Autozone, and have worse performace (absolutely pathetic) with the new after market stuff. The old GM parts that were *** only knows how old are much better. So I will stick with them for a while until I can afford something really good.