The issue with that statement is how YOU'RE running the 600hp or more sb...
A pass at a time isn't all the bad, running it at it's potential for more than a quick pass and then the chance they'll come apart is a very good way to see it...
I have taken sb and gone 600hp, but then again im not running it at it's potential for 5 miles, where there would be a issue with the ability of it to handle more than 9 second at a time use.
When guys building motors say they don't handle it, they're saying that to a customer whom they DO NOT know and have NO CLUE what that person is going to do with the 600+ hp sb they built him in a stock block.
So will 600 plus hp live in a unfilled stock block for 9 seconds at a time, i have seen that not be a issue, would i say the same for the guy wanting to do it on a road coarse all day...or some top speed event where it's gonna be at it's potential for more than 9 seconds....
We can find out, i'll build you one and set it on the dyno at it's potential for 5 minutes, in 5 minutes and 1 second you either got a reliable sb or a good explosive video....
I tell people that 3" AL shouldn't be used in more than 500hp apps for normal race weight drag vehicles, well my math says it shouldn't see more than 500hp apps, but i have a customer who continually goes 1.26 60's at more than 500hp on a 3" AL shaft i built him, but guess what ? im still not building 3" AL shafts for more than 500hp in those apps just because his has been fine.
Same with building a stock block for more than or just over 600hp...
Would you build a 610hp sb for someone and tell them it'll be fine... it's you're name and rep? you're going to do it ?
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