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MSD Ignition 83645 - MSD Digital GM High Energy Modules with Rev Limiters

  • Ignition Module, High Energy, 4-Pin, GM, HEI, with Rev Limiter, AMC, GM, Each
  • Additional Info
    • Substitute Part: MSD-83647
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BrandMSD Ignition
Manufacturer's Part Number83645
Part TypeIgnition Modules
Product LineMSD Digital GM High Energy Modules with Rev Limiters
Summit Racing Part NumberMSD-83645
UPC085132836451
 
Module Pin Quantity4
QuantitySold individually.
Wiring Harness IncludedNo
 

These MSD Digital GM high-energy modules with rev limiters allow you to adjust the rpm limit between 5,000 and 10,000. True high-performance modules built for HEI distributors, they produce 50 percent higher coil drive currents than the stock module. This saturates the coil faster, which gives you more spark energy at top speeds. The results are increased horsepower and rpm range, and improved starting. When used with MSD's HEI coil, these plug-in modules create a potent high-energy spark to 10,000 rpm. MSD's GM HEI modules replace all 4-pin modules used in HEI distributors with a vacuum advance canister. They can be used with factory, aftermarket, or MSD HEI distributors.

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