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ls1 block quik question ?

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Old Feb 12, 2008 | 12:25 AM
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Default ls1 block quik question ?

hey guys i have a quick question ? would i be the same building a eng. with a ls1 alluminum block with forged pistons and rods for a turbo set-up it will hold the power as of building a 5.7 with a 5.3 iron block bore out it will work the same or wich one is better to use i dont plan on making 800 -1000 hp i just want around 500-600 hp at the most and around 15psi the most so wich one ? alluminum or iron??? please let me know what do you think about this build.
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Old Feb 12, 2008 | 12:47 AM
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im askin myself the same question??
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Old Feb 12, 2008 | 01:03 AM
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aluminum will be just fine. im running 680rwhp with an ls6 block with no problems. i alos ran my stock internal to 97,000 with 575rwhp and no problems!
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Old Feb 12, 2008 | 01:12 AM
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OAKLAND MAROBOY- with kind of pistons are you using with how many -cc and what heads (size) and how much boost are u pushing and can you get more out of your eng. with the alluminum block and last a long time? thanks for the info and good work bro.
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Old Feb 12, 2008 | 02:49 AM
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ls1 Alluminum blocks are good up to how much steet diven horse power ?
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Old Feb 12, 2008 | 05:24 AM
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Originally Posted by mike06tork
ls1 Alluminum blocks are good up to how much steet diven horse power ?
We've had them at 800 rwhp for years. This Z06 recorded 790 rwhp but as you can see in the video at the end of all the pic's, it kept blowing the tires off on the dyno, so we never got the true horsepower.
http://www.exoticperformanceplus.com...Car.php?car=26

Here is a C5 that all we did to the internals was add Callies Compstar rods and Diamond pistons, and kept the stock crank in it as well. It is at 740 rwhp and runs for two hours at a time on the 2.5 mile road course.
http://www.exoticperformanceplus.com...Car.php?car=40 Bob
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Old Feb 12, 2008 | 11:33 AM
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So i dont need an iron block to make that kind off horse power and have as a daily driver i only want around 600 hp at the most anybody else i see they have 6.0 blocks is it to just get more cubes and its cheaper or why ? thanks for you alls help....
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Old Feb 12, 2008 | 07:40 PM
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anybody else?
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Old Feb 13, 2008 | 03:06 PM
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Originally Posted by Exotic Performance Plus
We've had them at 800 rwhp for years.
What did you have done with the engine, in other words was it a stock bottom end?
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Old Feb 13, 2008 | 03:29 PM
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600HP ? no brainer, alum. block for sure. There was a thread a while back where someone ( W2W maybe ) showed some pics of an alum block after a season of racing. It had some hair line cracks at the top of the bores from stress. This was obviously a race car with god knows how much hp ( low mid 4 digits I think ). I wouldn't worry about the alum. block till you start pushing over 900 hp. Even then, you wouldn't likely have any problems unless you were at the track every weekend.
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Old Feb 13, 2008 | 03:37 PM
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Kp on here has a thread about what his block looked like after 100's of track passes and like 50 dyno pulls.It has everything that was done to it and pictures of all the parts.

Just found it:

https://ls1tech.com/forums/showthrea...072&highlight=
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Old Feb 13, 2008 | 08:57 PM
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its a 2001 corvette ls1 alluminum block std bore with mahle pistons power pac -4cc with mahle low drag rings and with 317 6.0 heads and with scat I beam rods 6.125 and with oem bolts on bottom end i plan on doing 10-15 psi the most will this hold down and around how much horse power is this good up to with a front mount turbo kit on a 2006 silverado its my daily driver so what do you all think of this.....?
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Old Feb 14, 2008 | 01:37 AM
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anybody ? what do you think...
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Old Feb 14, 2008 | 12:06 PM
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anybody??????????????????????????????????????????? ??????
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Old Feb 14, 2008 | 01:07 PM
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If you made that any harder to read it would be goddamn Morse code.
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Old Feb 14, 2008 | 01:16 PM
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Change those oem bottom end bolts, and don't worry about the block. With a well put together engine the stock crank and block are impressive in regards to how much power they can handle. You don't want an oem bolt to let go on the bottom end though.
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