Best way to torque crank bolt

I watched a buddy of mine tap the bolt on his chevy with in impact just a couple times....not over doing it or nothing, and it ripped the threads right out of the snout of the crank lol (might just be a chevy thing HAHAHA)

I NORMALLY use torque wrench on most engine assembly and If I were doing it by myself and the oil pan was on....I would probably wedge a screw driver in the back on the ring gear and start torquing away.

but I have also done it with an impact and as said before.....if you have common sense you will know when to stop with the impact lol

If I use an impact I will normally watch the balancer snout sink into the timing cover and when it stops sinking in is normally about the time the sound the impact makes changes from a "clack clack clack" to a "tunk tunk tunk" ....I normally let it make the "tunk" noise about 3 times and then let off