There are toothy flywheel locks that engage the flexplate ring gear available for all Chevy engines and others but I can't seem to find one for Buicks. Anybody know of one that works? I know all the backyard tricks for holding the engine, I just don't like doing it that way when I am working on an engine on the engine stand. Thanks.
Maybe you can make one? https://www.motortrend.com/news/wrenchin-wednesday-diy-crank-lock-flexplates-flywheels/