If it's still factory it will have an HEI ignition system.
an hei has a solid state ignition module rather than mechanical points... the hei is capable of much higher coil voltages because there are no points to wear out.....the hei is better in terms of performance and longevity
1975 for the HEI (High Energy Ignition) system (no more ignition points)
HEI stands for High Energy Ignition.
HEI 0.45 HEI~ High Energy Ignition/NO POINTS Large Dist. Cap No external coil Non-HEI .035
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The 327 cubic inch Chevrolet's distributor had points and condenser and not an ignition module. If you have an ignition module then you have a HEI distributor that was changed out.
In 74 Chevy went to the HEI system. Prior to that just points.
hei stands for high energy ignition and refers to the distributor. previous distributors used points and later distributors were controlled by the on-board computer.
all 1984's had HEI ignition.
High Energy Ignition (HEI) Module.
small block Chevrolet with HEI ignition is 45