Nathan - Yes, you can tap in a new front crank seal into the timing cover without removing the cover from the engine. Yes, you have to remove the balancer and knowing our old engines, a sleeve will likely be needed and is a good idea to have one ready at hand. wink


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)