MSD 8677- Adjustable RPM Module-1,000-3,000RPM-Low RPM module-w/ tool

  • $36.95
    Unit price per 

You are bidding on an MSD Adjustable RPM module-1,000-3,000RPM

Part# MSD 8677

The item is brand new in the package as shown. These are genuine MSD products, backed by their manufacturers warranty.

Parts Included:

1 – Adjustable Low RPM Module 1 – Small Screw Driver

This Adjustable Low RPM Module is designed to be used with any of the MSD Rev Control components or accessories that use the standard white MSD RPM Modules. It cannot be used on the MSD Engine Governor, PN 8725.


Solid core spark plug wires cannot be used with an MSD Ignition Control or MSD Timing and RPM Accessories.


The Adjustable Module has a screw in its side that controls the rpm amount. The range of limit is from about 1,000 – 3,000 rpm, depending on the application. One turn is roughly equal to 100 rpm. The Module is set at the factory with the adjusting screw turned all the way in which is the highest rpm.


The adjusting screw is a multi-turn pot. This means that it will still turn even when the minimum or maximum rpm is reached.

The best way to set the desired rpm is with an MSD Ignition Tester, PN 8998. The Tester will simulate the ignition running so the Module can be set without running the engine. If a Tester is not available, run the engine and set the rpm using a tachometer.

Shipping will be free to the US only. International shipping is available at an extra cost to be paid by the buyer, calculated, depending on the buyers location. Item will be shipped within one business day upon receiving payment for your purchase, and if in time, will be shipped the same business day.

Heintz Brothers is a locally owned small business in operation for over 40 years, meeting the racing needs of oval track racers, drag racers, dirt track racers, NASCAR racers, and racers of any kind. We specialize in engine building, parts sales, and customer service in the racing industry. Our commitment to excellence and the business is shown by the induction of Heintz Brothers into the NC Drag Racing Hall of Fame. Please feel free to contact us with further questions. Our salesmen are standing by. We have two stores located in Statesville and Concord, NC. We appreciate the opportunity to meet your performance racing needs and thank you for your business. We hope to have the opportunity to serve you in the future. Check out our ABOUT ME Ebay page for more information. Feel free to ask us about other parts not listed on EBAY as we build our online store with new parts each week.

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