The LS is finally getting there with the cubic inches. It's just taking a while. The money spent on big cube LS motors is insane.
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They may get over 600, but imagine the cost of the rotating assembly alone. If they do get to 600+ inches, imagine the power they could make though. We've got 4xx lsx motors hitting 1800+ hp. Imagine a 600ci. You'd be stuck with Allpro heads too, which would cost you another 10k.
They may get there, but I doubt it. Granted, you can spend 10k on a set of BBC heads as well, but I imagine the flow would be something and LS owner could only dream of.
Like I said, don't get me wrong, I think the LS stuff is great. It's what I've learned on. The smaller cubic inches are awesome when you hang a couple turbo's off of them with results of, like you said, 1800+ hp...But where are these guys at? How long are these motors living? How come they're not out winning races?
The LS is great. But there shouldn't ever be a comparison to a BBC. Two totally different animals
i had a bbc in my last avalanche that sucked lol
http://www.youtube.com/watch?v=QDyR4mrilI0 and thats just small 433 cubic inches at 1000 hp !! imagine 500 c.i lsx
I don't understand why you want to compare the two???
Both are GM...We're all for GM products here right?
Both are badass engines...Right?
Cubic inches are cubic inches...whether its a small block or a big block. I bet the cylinder heads on the SAM motor would cost someone nearly $7-8k to buy....Throw an awesome set of heads on a 500+ C.I. motor and that 433 is still going to run with its tail tuck, whether its an LS, SBC, BBC
The zz572 comes with "junk" heads, a TINY 850 cfm carb and a small cam...Now, throw a set of heads on it that flow 480cfm, an 1150 dominator and an actual cam in it and see what happens
THERE IS NO REASON TO COMPARE THESE TWO!!!