Getting the timing cover off will be a challenge, since the harmonic balancer is pressed on and there are two timing cover bolts that are only accessible by removing the oil pan. Back when main bearings were shim-adjustable, those two bolts that went through the front main bearing cap were much easier to get to from the back side. When Chevy went to non-adjustable mains, they didn't change the bolt arrangement. Very little can go wrong with the timing gears that doesn't stop the engine dead in its tracks.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!