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700 HP, which block to obtain a safe 700 HP level?

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Old 09-02-2009, 10:25 PM
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Default 700 HP, which block to obtain a safe 700 HP level?

So i recently hydrolocked my motor due to a flash flood and would like to build a awesome motor to put out about 700HP without bending the spending too much....

I would like to see if there was a way to do it without changing too much as i have the D1SC and the Alky to help with numbers.

This board probably sees this a ton BUT i didnt know which key words to use for the search LOL I got some pretty random posts HAHAHA! I was thinking of just building a low compression 347 with forged internals and running some decent heads but i dont even know where to start GRRRRRR. Any help would be amazing, and thanks in advance!

Dan
Old 09-02-2009, 10:48 PM
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LS1 block would be fine, that's what I'm running.
Old 09-02-2009, 11:02 PM
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Just forge the ls1, a local guy has a forged ls1 ported 241 heads and an ls1 intake, car puts down 810 corrected through an auto and 9" at 15psi F1A
Old 09-02-2009, 11:09 PM
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I have done a few Stock LS1 aluminum block engine too well over 700rwhp.
Done a couple LQ9 block to well over 1000rwhp.
Old 09-03-2009, 01:26 AM
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Forged 346 will get the job done but I'd also look into a forged LQ9 and compare the costs since either one option can safely get the job done.
Old 09-03-2009, 05:47 AM
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Any LS block is fine
Old 09-03-2009, 09:08 AM
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700hp....why used forged parts? Just use stock
Old 09-03-2009, 10:03 AM
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Originally Posted by pwrtrip75
700hp....why used forged parts? Just use stock
is this a J/K or for real??

I guess it could be done but for how long. Everything I ever read says that stock rods and piston dont go to far past 550-600rhwp. 700 I guess is feasable but with any tuning error or to much hard use you lose the engine quick.

If you plan on doing something else and dont mind grenading the stocker go for it, but if you plan on using this setup for a long time then I would forge atleast rods and pistons.
Old 09-03-2009, 01:24 PM
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im doing a forged ls1 (pending it stays together that long) and everyone will agree if you already have that block use it, 700 is no problem!
Old 09-03-2009, 02:47 PM
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I got a 408 Iron Block and am making over 700 H.P. with my D1SC with no worry on breaking anything.
Old 09-03-2009, 02:51 PM
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Originally Posted by Fireball
Any LS block is fine
What he said
Old 09-03-2009, 04:20 PM
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Originally Posted by dans91
So i recently hydrolocked my motor due to a flash flood and would like to build a awesome motor to put out about 700HP without bending the spending too much....

I would like to see if there was a way to do it without changing too much as i have the D1SC and the Alky to help with numbers.

This board probably sees this a ton BUT i didnt know which key words to use for the search LOL I got some pretty random posts HAHAHA! I was thinking of just building a low compression 347 with forged internals and running some decent heads but i dont even know where to start GRRRRRR. Any help would be amazing, and thanks in advance!

Dan
402-418 forged you will get a lot of years and fun out of it
Old 09-04-2009, 03:10 PM
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Originally Posted by MelScrilla
is this a J/K or for real??

I guess it could be done but for how long. Everything I ever read says that stock rods and piston dont go to far past 550-600rhwp. 700 I guess is feasable but with any tuning error or to much hard use you lose the engine quick.

If you plan on doing something else and dont mind grenading the stocker go for it, but if you plan on using this setup for a long time then I would forge atleast rods and pistons.
With a tuning error it doesnt matter how good of parts you have. They all can blow. My stock bottom end junk yard 5.3 has been running fine for 3 years. 15psi + 50 shot of spray. Puts down 640whp. So it makes at least 700 at the crank. And its tuned rather conservatively.
Old 09-04-2009, 04:34 PM
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Originally Posted by Fireball
Any LS block is fine
+1
Old 09-05-2009, 03:45 PM
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Thanks everyone!!! Awesome replys and it looks like i will be going with a LS1 but just forged so i can have some fun. I have been out of this posting thing for quite some time so thanks for not flaming me as bad as i thought i was gonna recieve lol. I wanted to go to the LQ9 block and forge it out but does that require alot of new parts to go along with it? OR is it pretty simple?
Old 09-05-2009, 04:43 PM
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Originally Posted by dans91
I wanted to go to the LQ9 block and forge it out but does that require alot of new parts to go along with it? OR is it pretty simple?
I'm not quite clear on what you asking but if i do understand heres my answer.

Forging the motor pretty much is just the rotating assembly. So no matter what motor you are putting the forged parts in its always just the connecting rods, crank shaft, and pistons. So it depends what you consider simple of alot of new parts.

Some of the parts you should consider if you want to make big hp are head and main studs, upgraded gaskets and bearings, and upgraded rodbolts.
None of these are real necessities (besides the rod bolts) but they do become important with the more hp you make.
Old 09-05-2009, 04:53 PM
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Originally Posted by Fireball
Any LS block is fine
Originally Posted by Brakemotive
What he said
Originally Posted by ChevyChad
+1
yep...........
Old 09-05-2009, 05:11 PM
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It's just up to you how much you want to spend. Any will work though...it's not like the old 2-bolt motors. the 6 bolt mains and having the crank set higher in the block makes the ls motors strong
Old 09-05-2009, 10:42 PM
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sorry, LOL. Let me rephrase

Do i need any new items going from the ls1 to the lq9 to fit my car. Like intake? or sensors etc...

That was a horrible phrased question so i take full acountability on that one hehe. I do know any motor questions since i do have a ton of mechanical background but just didnt know what i would need with the swap is all. I guess this is where my research comes in lol.

stevied916........... what happened to the Norcal-lsx site? Im from there and used to post there ALL the time and BAM, i look and its gone?
Old 09-05-2009, 10:55 PM
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id say lq9 cus if something ever goes you dont have to sleeve it


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