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MSD Digital GM High Energy Modules with Rev Limiters 83647

MSD Ignition 83647 - MSD Digital GM High Energy Modules with Rev Limiters
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Ignition Control Module, Heat Digital HEI Module, With Rev limiter, Each

Estimated Ship Date: Monday 2/2/2015 Would you rather pick it up? Select Location

  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight fees. Valid on orders shipped in the contiguous United States.

Brand: MSD Ignition

Manufacturer's Part Number: 83647

Part Type: Ignition Modules

Product Line: MSD Digital GM High Energy Modules with Rev Limiters

Summit Racing Part Number: MSD-83647

UPC: 085132836475

Module Pin Quantity: 4

Wiring Harness Included: Yes

Quantity: Sold individually.

Notes: This module fits stock GM HEI distributor housings (original condenser assembly must be removed) or MSD-8365 Pro-Billet HEI distributors only.

CARB EO Number: D-40-43 (pdf)
To see a list of qualifying vehicles, enter CARB EO Number D-40-43

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

These MSD Digital GM high-energy modules with rev limiters allow you to adjust the rpm limit between 5,000 and 9,000 rpm. 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 9,000 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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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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