Alan, for your old 'Vette, get one of those replacement high performance aftermarket HEI modules. For years, the only thing available was an obscure Olds HEI module, but the hot rod guys finally came up with a better-than-stock replacement.
Circle track guys use them when they are restricted to "stock" ignition systems. You wouldn't need an MSD 6 box for driving on the street with this improved HEI module.
You can use an MSD-6 box triggered by the stock HEI module, but you are still stuck with the poor performance of that module at higher rpms.
There are also remote mounted coil change over kits for GM's HEI distributor. MSD and Accel make them. And a nice aftermarket dist. cap is a good idea, too, as the stock cap has a nasty tendency to burn through right in the center, where the rotor contact is.
A good stock replacement distributor is an older 'Vette electronic one, which uses the older, small Chevy cap. Use one of those to trigger an MSD 6 box. These older 'Vette distributors also have a mechanical tack drive provision, if you need that.
Top off your ignition upgrades with a good set of plug wires, such as Mororo Heli-coils, or a Magnecor set.
Last edited by PapaDean; 12/04/2005 3:31 AM.
