360 block limits
I hope the OP got what he was looking for in the first two pages, because the rest of them have turned into a pissing match. Sadly, it's the new norm here.
Of course he didn’t get what he was looking for. There is no definitive answer to his question.
He wants someone to tell him that what he wants to do will survive. Maybe it will, maybe it won’t.
A big factor in if it will live is the quality of the machine work that went into it. If it was set up with clearances on the tight side (bearing clearances) and he starts hammering on it then the block flexes and the crank starts bending then the clearance goes to less than zero and **** starts leaving the block.
Who knows what’s on it for a crank damper. He may run into a frequency issue when **** starts moving around and the damper can’t handle that because it’s a frequency it can’t dampen and it just happens to occur in an RPM/load range where it spends too much time and **** starts coming out.
Or, maybe he can hit it with a 250 shot and it lives forever.
Way too many variables to give a definitive answer. But I’ll say it again. I don’t ever build a performance engine with a cast crank. You never know what you may want to do down the road and a cast crank and cast pistons will not take as much stress as forged stuff.
And, I forgot to mention the bending loads on the snout end of the crank are far greater is it’s externally balanced. So there is that to figure in as well.
I‘m not trying to discourage the OP. Just pointing out what the answer SHOULD be to his question.
Maybe, maybe not.
And now we will have another **** show because the trolls will chime in with their builds where they make 1200 HP on the hose with stock everything and did it for years and never so much as cleaned the tip off a plug.
Thats Walt Disney type fantasy right there.