You really don't save any money doing it yourself. The real reason to do it yourself is so you know exactly what's inside, and if you are doing something unusual. Or you own the correct machining equipment. Back in the days of old, you could order a engine kit from someone like PAW, and do a quick build. Those days are long gone. Buy a short or long block built to known specs, and finish it off with good new parts. You will get the expected results that way. Dino has the right idea, find the weakest link in the motor. If you can't fix that, you're done.
i think you couldnt be more wrong ... ive done so much engine work on all my cars that it does save money in labor costs alone,, like how could you say that?
sure ,,if you are all thumbs and cant do anything mechanical, than sure ,, pay your way i guess is the only way ,, i myself can save over $2000 in labor just by doing , my timing , head gaskets , cams , roller followers and clutch ,,, not to mention my wifes multiple outbacks which i had to pull the motor and do the timing and head gaskets,,, took me 2 weekends,, shop wanted $1600 ,, so 9 hrs of my time,, ..
sounds like a joe biden build back better plan to me,, makes no sense ,, like wiping your butt and than taking a crap,, yea?