By A Mystery Man Writer
Running a stock GM HEI distributor on your engine? Then Summit Racing’s got a handy Digital GM High Energy Module that lets you add an adjustable rev limiter to it. […]
ZZ4 Distributor
Upgrade Your HEI Module To Include Rev-Limiting Capabilities
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Summit Racing™ Digital GM High Energy Modules with Rev Limiters - Free Shipping on Orders Over $109 at Summit Racing
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