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Old 08-04-2019, 08:09 PM
Geoff 4 Geoff 4 is offline
Senior Member
Join Date: Apr 2016
Location: Australia
Posts: 284
Name: Geoff
MSD ign module for HEI

MSD #83645 module. It switches 7.5 amps for a hotter spark v 5.5 amps for the stock module.
This module has a built in rev limiter, simply adjusted with a dial: 5000-10,000 rpm. According to the instruction sheet that goes with it, the module has a 'patent pending Traction Control System'.

It costs $117 at Summit, or $AU164. sell for $70. I have cut a couple of the wires, you may need to lengthen them. I had this mounted under the dash to keep it cool. It will also mount inside a HEI dist in place of the factory module.
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