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Big Cube Sleeper potential???

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Old 08-21-2009, 01:42 PM
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Default Big Cube Sleeper potential???

First off I have been out of this for awhile, I used to follow this stuff pretty closely but haven't for awhile and therefore am a little out of date.

Anyways what I am thinking about or wondering about is how much power could I make with a big cube engine like 454 while still retaining a smooth idle. Sort of the ultimate sleeper, something I could fit in my 02 Camaro SS without any tell tales that I did anything. Like I am even thinking of keeping my stock SLP exhaust.

Your thoughts and ideas?
Old 08-21-2009, 02:13 PM
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gonna be tough... im not sure you can have to much of a sleeper with big cubes without sacrificing power.
Old 08-21-2009, 03:41 PM
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Save yourself 10k and buy a nitrous kit
Old 08-21-2009, 03:45 PM
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I got a 427 that idles like stock but you can hear from the Exhaust that its camed
Its a smaller cam 232/242/ 650 lift and 115 lsa.

With cats and quiet muffles i think it would pass close to being stock. But not sure and to add all that stuff would kill power
Old 08-21-2009, 06:00 PM
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Of course you can and it will make more trq than Hp. But most poeple once in big cube territory want it all out of it.
You can make a 500rwhp 454 as tame as a stock car, untill you mistakingly put your foot down
Old 08-21-2009, 07:22 PM
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here ya go....https://ls1tech.com/forums/new-produ...3499-99-a.html

top it off with a nice set of heads,have a custom cam spec'd fast92/92...some 1 7/8 headers.....should be easily done...but like predator said it can be tame till you hit that go pedal....
Old 08-21-2009, 08:16 PM
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stock LS7 is tame and it`s 427 it can be done... just install dual cut-outs or a single cut-out for fun and more power when racing.
Old 08-21-2009, 08:20 PM
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just get a 408 and put a turbo on it.. sleeper at idle.. but OH MY GOOOOOODDDDDD when its on the wood...
Old 08-22-2009, 12:41 AM
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Vengeance did a 496 Warhawk block thats kind of a sleeper. Since all the standard deck LS blocks have the same dimensions the only give away would be the sound. I would run a pretty queit exhaust like a magnaflow catback with a cutout in the I pipe. Get a ported fast sanded down and powder coated flatblack like a stock gm intake, black headers to not attract any attention, stock valve covers, then you could pop the hood and no one would know any better.

A guy that doesn't know the LS stuff wouldn't know the difference between the sound anyway and if they got suspicious you could always say it was a 383.
Old 08-22-2009, 04:15 PM
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Originally Posted by MelScrilla
Vengeance did a 496 Warhawk block thats kind of a sleeper. Since all the standard deck LS blocks have the same dimensions the only give away would be the sound. I would run a pretty queit exhaust like a magnaflow catback with a cutout in the I pipe. Get a ported fast sanded down and powder coated flatblack like a stock gm intake, black headers to not attract any attention, stock valve covers, then you could pop the hood and no one would know any better.

A guy that doesn't know the LS stuff wouldn't know the difference between the sound anyway and if they got suspicious you could always say it was a 383.
+1, I like that idea, their WarHawks are crazy, good bit of money too though.

-SS
Old 08-22-2009, 07:29 PM
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Originally Posted by hotrodscrap
+1, I like that idea, their WarHawks are crazy, good bit of money too though.

-SS
yeah i wouldnt buy that unless i wanted an all out race car. heres an idea, run a 408 with a decent h/c/i set up and then run 2 kits on the car. make one kit visable and hide the other. if they find one i doubt they will look for the other one.
Old 08-22-2009, 09:20 PM
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Originally Posted by MelScrilla
Vengeance did a 496 Warhawk block thats kind of a sleeper. Since all the standard deck LS blocks have the same dimensions the only give away would be the sound. I would run a pretty queit exhaust like a magnaflow catback with a cutout in the I pipe. Get a ported fast sanded down and powder coated flatblack like a stock gm intake, black headers to not attract any attention, stock valve covers, then you could pop the hood and no one would know any better.

A guy that doesn't know the LS stuff wouldn't know the difference between the sound anyway and if they got suspicious you could always say it was a 383.
thier build was with a tall deck. that had to space the k-member 1/2 inch lower to get the valve covers to clear
Old 08-23-2009, 06:11 PM
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I like the warhawk block idea, but I thought I read somewhere that a re-sleeved LS2 block would work just as well as long as I don't use any power adders (ie blower,turbo, nos)? And I don't know what the cost comparison would be, I haven't found one online yet? I also looked at the LSX block and while I am sure the weight difference is negligible I don't know if I like replacing an aluminum block with a steel one.

As for the hp loss, I am not to worried about that, in fact what got me on this train of thought was doing a head cam swap for 500hp but I figured I could get near the same hp just smoother if I did a big disp. And while more the 500 is interesting I start to get worried about axle breakage, trans breakage and (I know I really have to go hog wild) car breakage like bending the chassis since I do have t-tops.

One thing I don't want is extra tubes inside the car, no matter what I do with the engine.
Old 08-23-2009, 07:46 PM
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Default Big cubes

If you do decide to go big, the SLP will be very Raspy ! I know, I had it on my 402 for a while. My resleeved LS2 block 454ci from Steve @ RED is pretty mild but with a 4 " Magnaflow, you know it's not stock.
Old 08-24-2009, 01:44 AM
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for 500 hp you could do a 383 with your current block, some nice heads and an aggressive cam. Or a 408 with some milled L92's and a custom cam. Either way you'll be at 500 or past it. Some people are even making around 500 with a stock cube LS2 with L92's.




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