Again, JMO but also based on my experience in racing and building these engines for 30+ years.
Running 9s with stock rods is not smart and dangerous.
With respect a stock crank and rods can run 9s all day long on the right car with the right build and tune even without being a lightweight.
It's not new and Many do it and have done it.
So I'm not sure why you would give an opinion like that given that many including myself would really disagree.
As for your theory of the 64 killing the stock crank and rods due to torque
Again with respect unless you do it you cant know.
so far
We have done it over and over again no opinion or thought but real world let it fly do it situations.
Not once and not twice but many more on multiple builds.
I have seen a 64 make 40+psi below 4000 rpm with a stock crank and live through 1000s of hits and 26k street miles.
Never broke the stock crank and ran 5s in the 1/8 all day long.
We have another one that has a stock crank,rod,diamond pistons,girdle,iron head 530 lift cam, single spring with a stock ported throttle body and intake,basically a 64mm car that can run low 9s that has been together for years and hundreds of hits with no issues so far.
Literally less than 7k in the longblock.
Should I tell him he is stupid?
As others need a 20k build to run the same et or slower.
As far as danger
Breaking a motor is a happening thing when you race and push things
I'm around many that loose rods and window blocks,melt pistons,blow gaskets,break turbos,tweak chassis,blow transmissions,etc
That's racing.
There is no bulletproof it's just how much time you hopefully get before it has to be fixed lol
And why alot of guys have spare bullets and other parts.
The key is being in a good car with a good chassis and tune the engine and suspension properly.
You will have alot going for you if things go wrong with the proper safety equipment.
I have seen you post about your chassis upgrades and previous accomplishments and I would assume you are no rookie when it comes to safety and potential breakage.
Also I have seen several that have run stock shortblock with heads and cam with the right car and driver and run mid 9s.
I personally wont setup a 9 sec combo with a build like that but it has been done and accomplishments should be respected.