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In-Store Pickup Location

MSD Flying Magnet Crank Trigger 8644

Crank Trigger, Flying Magnet, Ford, 429/460, 7.25" balancer, Kit

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

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Brand: MSD Ignition

Manufacturer's Part Number: 8644

Part Type: Crank Trigger Kits

Product Line: MSD Flying Magnet Crank Trigger

Summit Racing Part Number: MSD-8644

UPC: 085132086443

Pickup Included: Yes

Adjustable Mounting Bracket Included: Yes

Bracket Material: Billet aluminum

Bracket Finish: Red anodized

Crank Trigger Wheel Included: Yes

Crankshaft Wheel Material: Aluminum

Crankshaft Wheel Finish: Red anodized

Hardware Included: Yes

Quantity: Sold as a kit.

Notes: Will not fit work on 351C, 351M or 400 engines.

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

MSD's flying magnet crank triggers use four magnets permanently embedded in an aluminum wheel. As the crank rotates, the magnets pass a non-magnetic pickup, which triggers the ignition. These MSD systems include a trigger wheel, pickup, CNC-machined aluminum mounting bracket, and hardware.

Warranty

Questions & Answers Ask a Product Question
Q:

Will this crank trigger kit work with the Summit Racing SFI Braket Racer Harmonic Damper SUM-C4272?

Asked by ALEX on July 20, 2017

A:

Thank you for your question. MSD Ignition 8644 will not work with the SUM-C4272 damper due to the diameter requirements of the crank trigger. This crank trigger must us a 7.25 in. diameter damper such as Fluidamper FLU-720201 which can be viewed by copying and pasting the link below.

https://www.summitracing.com/search/part-type/harmonic-balancers/make/ford/engine-size/7-5l-460/engine-family/ford-big-block-385-series/outside-diameter-in/7-250-in?N=4294943542%2B4294951343%2B4294951323%2B4294951322%2B4294880742&SortBy=BestKeywordMatch&SortOrder=Ascending

Summit RacingSummit Racing Answer - August 21, 2017

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Most Helpful Reviews Review This Product

2 Customer Reviews for MSD Ignition 8644 - MSD Flying Magnet Crank Trigger

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Edelbrck Crank Trigger

Summit RacingSummit Racing Verified Purchase

MSD-8644
Fit my harmonic balancer perfectly and the timing is right on.

1 of 1 found this review helpful.

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Reviewer: from WA

Date: August 04, 2014

Appearance
Ease of Installation
Price/Value
Quality

Still needed to be modified

Summit RacingSummit Racing Verified Purchase

MSD-8644
When using with and ATI balancer (917630) and the crank trigger,(wheel) that has 9 slots/holes. And the balancer had three bolt GM style pattern, the wheel would fit on three different ways. And we was going for 35°BTDC,We couldn`t get there with the pickup, all the way top or bottom of the pickup`s slot. So we/the engine builder removed it for the felt like the 20th time and drilled more holes and finely got what we wanted for the last hour, of course this added $ to my dyno bill. He`s thoughts NOT ALL BALANCERS are CREATED EQUELL, this was on and big block Ford 547ci with Eagle crank... BUT still LIKE my the MSD and ATI parts. My thought is, it`s 2017 and didn`t think I was doing any EXOTIC!!!!! ...read more

0 of 0 found this review helpful.

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Reviewer: from TX

Date: October 03, 2017

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for use in California or other states with similar laws / regulations

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