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MSD Performance 8621 - Crank Trigger Wheel. Chevrolet Big Block. 8'' Balancer

Replacement crank trigger wheel for big block Chevy 8 In. balancer. For a long time racers have known that one of the best things to do to an engine to improve its performance is to stabilize ignition timing. The MSD flying magnetic crank trigger system does exactly that by using four magnets embedded in an aluminum wheel. This is the replacement part for the aluminum crank trigger wheel.

  • Accurate trigger signals
  • Non-magnetic pickup cannot be false triggered
  • Parts CNC Machined aluminum in red anodized finish
  • Wide range of timing adjustment
  • Works on either side of engine
  • Bracket holds pickup in place
  • Easy plug and play wire to ignition
  • Will trigger MSD 6/7/8 ignitions/accessories

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MSD Performance 8621 - Crank Trigger Wheel. Chevrolet Big Block. 8'' Balancer

Replacement crank trigger wheel for big block Chevy 8 In. balancer. For a long time racers have known that one of the best things to do to an engine to improve its performance is to stabilize ignition timing. The MSD flying magnetic crank trigger system does exactly that by using four magnets embedded in an aluminum wheel. This is the replacement part for the aluminum crank trigger wheel.

  • Accurate trigger signals
  • Non-magnetic pickup cannot be false triggered
  • Parts CNC Machined aluminum in red anodized finish
  • Wide range of timing adjustment
  • Works on either side of engine
  • Bracket holds pickup in place
  • Easy plug and play wire to ignition
  • Will trigger MSD 6/7/8 ignitions/accessories

There is no documentation for this product.

0 of 0 reviews

Average rating of 0 out of 5 stars

Leave a review!

Share your experiences with other customers.


There are no installation notes for this product.

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MSD Performance

Racers never stop experimenting as they search for every way to wring out more power or handling performance to to gain an edge over the competition. The team at MSD is no different as we strive to deliver the products you need to meet your performance goals. We continue to innovate and invent components and technology that deliver performance and reliability with products that are easy to use and install. Over the course of 40-plus years, MSD Performance has been driving the development of innovative components that helped shape the way our cars race and perform. From super speedways to road courses, land speed racing to top fuel dragsters, and of course your traditional hot rod, MSD has provided the components to fire nearly anything in motorsports. Early on, MSD focused squarely on ignition systems with revolutionary products like the multiple sparking CD ignition, timing and rev controls, billet aluminum distributors and the Pro-Mag, an incredible breakthrough in power and endurance. Today MSD is developing electronics for your entire powertrain. The Atomic EFI systems for the LS engine platform and throttle body are now complemented with a transmission controller. Our DynaForce Starters and Alternators ensure that your engine cranks over to fire up and the Alternators keep it charged. MSD is poised to deliver components that work and communicate together to provide performance and value.