LOWER INTAKE MANIFOLD GASKET REPLACING + CLEANING MANIFOLD, BLOCK RIDGES FOR RTV on 1995 Chevrolet Lumina

May I ask you how long it will take to do a changing lower intake gasket, cleaning the intake manifold, heads, and engine block's ridges for RTV sealants, for one person?

and does it require two persons?

Thank you for your advice.

1 answer 1 comment
It takes 3 people 2 to move the engine back and forth and 1 to hold the scraper! How long you been at this one repair? You should be able to do it by yourself! Maybe.
2 for shaking the engine, 1 for scrapping: I guess that was just a joke!

I plan to do it myself as seen on some online sites, but like to know how long it will take,
so I can make my schedule right. please advise!