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Mod | | | Forums66 Topics128,014 Posts1,055,327 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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| | | | Joined: Apr 2000 Posts: 499 'Bolter | | 'Bolter Joined: Apr 2000 Posts: 499 | I probably didn't explain that very well. The Motorola IC(Integrated Circuit) is part of what is inside the GM HEI. The drawing below that I found on the web is a quick and dirty depiction of the HEI module. The Motorola portion is what they are calling a signal converter. The npn transistor is actually a Darlington power transistor labeled MJ10012 in the block diagram in my previous link. http://www.jetav8r.com/Vision/Ignition/hei.gif
'67 GMC 3/4 292 4spd
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