As the title is looking for, what sort of RWHP can a LS2 motor handle before finding itself in trouble? Does changing the cam and heads allow for more power? Or would pistons need to be changed as well to prep motor for more power?

As the title is looking for, what sort of RWHP can a LS2 motor handle before finding itself in trouble? Does changing the cam and heads allow for more power? Or would pistons need to be changed as well to prep motor for more power?

Mine made around 700HP for 30,000 miles (65K total) before a piston split in half. It is generally accepted that these motors are good for around 600RWHP before you want to swap pistons, but some have made over 800HP on a stock block.
Like every other engine out there, a cam and head job will make more power. You can make up to about 500RWHP like that if you want to keep it N/A. Driveability will suffer some at those extremes because it will take a big cam.

I will say its the rods which is the weak point on these new motors, the motor will handle big power force induction or N/A but the constant abuse will lead to rods giving up.
My LS3 made 738rwhp F1 but if I was the only driver it would have lasted longer,but a friend who drives like a killer drove it and the rods gave up. There was nothing could have done to avoid rod failure.
So your question related answer will be around 650/675 with a safe tune.

I will say its the rods which is the weak point on these new motors, the motor will handle big power force induction or N/A but the constant abuse will lead to rods giving up.
My LS3 made 738rwhp F1 but if I was the only driver it would have lasted longer,but a friend who drives like a killer drove it and the rods gave up. There was nothing could have done to avoid rod failure.
So your question related answer will be around 650/675 with a safe tune.

Hi Mario! What a pleasure to see you at this forum :)!
The factory sintered powder rods are definitely not as strong as any of the aftermarket forged offerings, but in my experience, it is usually the pistons that let go first... Mine broke a ring land after 65K miles, 30,000 of which making 600RWHP, and Graig's piston broke in half after about 13K miles at low 700s at the wheels.
I agree around 600WHP things start getting risky, though, as you said, many have and continue to make much more through stock engines.