RHS 501" LS vs. GMPP 572" Big Block.

[pl4yboy]

To an extent...Everything thats available for SB and BB is available for the LS platform and visa versa, EXCEPT...Cubic Inches

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.

[phantom405]

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.

I just don't think they'll ever get to 600+ cubic inches...and plus its just hard to compete with an engine (BBC) that has heads available for it that you can throw a tennis ball through LOL

[pl4yboy]

I just don't think they'll ever get to 600+ cubic inches...and plus its just hard to compete with an engine (BBC) that has heads available for it that you can throw a tennis ball through LOL

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.

[phantom405]

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

[pl4yboy]

The LS is great. But there shouldn't ever be a comparison to a BBC. Two totally different animals

Finally something we can agree on.

[IXLR8]

So let's compare two motors of the same size...502 BBC vs 502 LSx.
INCH FOR INCH what motor will win?

You clearly missed post number 11 on this thread.

Be sure to post back when you find a naturally aspirated 500ci LS motor that can match it.

[st8kfinger]

i had a bbc in my last avalanche that sucked lol

[CHEVROLADE]

and thats just small 433 cubic inches at 1000 hp !! imagine 500 c.i lsx

[408.Luke]

and thats just small 433 cubic inches at 1000 hp !! imagine 500 c.i lsx

i posted this last time and dont think he said anything. and look he hasent commented on it! wow what a shock lol

[phantom405]

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!!!