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The gear is a light press fit with a retaining pin, as are most Ford gears.
Remove the pin. You can use a modest amount of heat if needed. A battery puller short puller will remove and destroy the iron gear. The new gear needs to be pressed on to the dimensions specified by MSD - they are not identical going by the drilled hole. Actually best to locate the hole 90 degrees from the original one. Once properly located you finish drill the hole and install the pin.
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Survival Motorsports
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Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP
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