Will a Stock 489 handle 700hp?

Close to it. I can't say 2x as an absolute, I'm saying it is close. If you were here Grumpy, I would let you put one on your car so it would open your eyes wide and you would go "wow".

I have tried to be as open with this as possible. I have facts and data I can't share with you guys. You keep probing me for information, I asked simply if a 8-3/4 would handle 700 hp... I got a million answers, a million questions, and your criticism. I asked a simple question. Let me determine if a 8-3/4 would work... Hmm, nope. I believe now I need a Dana. According to all the replies I've gotten, 700 is around the hp where a 8-3/4 would break under low rpm, take off, which is where I was wanting it to be strong. If I had said I was working on a gizmo that produced 2x the low end and wanted to know if a 8-3/4 would work, I would have caught all this flack at the beginning. How many people have a diff rated at 500 hp and have broken it with a 500 hp motor? Or a 700 hp diff with a 700 hp motor?? I am producing more torque than a 500 hp engine will produce normally, I calculated to think that maybe a 700 hp rated diff would handle it, and perhaps it won't. I don't take chances and don't want to spent $2000 on a diff that is going to break. That's all I was asking.

You have your answer. I will post the results. Please let this thread die.
Thanks,
Bob
Sounds like u were willing to take a big chance on an 8 3/4. U shouldn’t of even considered it. Kim