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Old 10-10-2009, 06:21 PM   #1
nite ryder
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looking to build 700hp n/a

i am looking to build a race car that is ls powered. it will be a nitrous car but i am still looking for big hp without the juice. i was thinking forged 408 trick flow heads and fast with custom grind cam that is matched with heads and intake. how possible is this? or will i need more cubic inches.
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Old 10-10-2009, 06:30 PM   #2
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Originally Posted by nite ryder...View Post
i am looking to build a race car that is ls powered. it will be a nitrous car but i am still looking for big hp without the juice. i was thinking forged 408 trick flow heads and fast with custom grind cam that is matched with heads and intake. how possible is this? or will i need more cubic inches.

Off the juice, I doubt you will come close to 700 rwhp in a 408. Better look at a 434-454 lsx. However the cost will be ridiculous and not worth it IMO unless you can build and install it from the ground up yourself.

Of course that is only part of the equation. Better have your ass end tubbed and a 9-12 bolt or the like in the rear to handle the abuse. Then we have the trans. Going to be a 30k build before you know it with rear, suspension, trans, engine...

The ls engines make the GTO an awesome car to get high hp out of but that is about where it stops. The car is dangerous and doesn't hook up for shit unless all the other areas are addressed and definitely NOT cost effective at all to do so.

Last edited by pharmdgto; 10-10-2009 at 06:35 PM.
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Old 10-10-2009, 06:31 PM   #3
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I think you'd need a big block to get close to 700 hp- 408 will never give you that kind of power n/a and off juice-
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Old 10-10-2009, 06:36 PM   #4
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i can build it and install it myself thats no problem. why would it not be worth it if its going in a race car? to buy the much from say reher morrison is 15-20k.i think i could get out cheaper. but thats why im asking for opinions.
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Old 10-10-2009, 06:38 PM   #5
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i can build it and install it myself thats no problem. why would it not be worth it if its going in a race car? to buy the much from say reher morrison is 15-20k.i think i could get out cheaper. but thats why im asking for opinions.

Just remember your going to need much more than just a motor and it is $$$$. Trust me, I know.

While the GTO is an awesome car, there are other options out there that can be amazingly fast for a fraction of the cost. I don't think I would to what I have done to my car over again but that is just me.
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Old 10-10-2009, 06:49 PM   #6
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oh no its not going in the gto. im building a 2000 camaro. i know it takes more than a motor.
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Old 10-10-2009, 06:59 PM   #7
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maybe a ls7 engine?
Yeahhhhhhhhhhh
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Old 10-10-2009, 07:18 PM   #8
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oh no its not going in the gto. im building a 2000 camaro. i know it takes more than a motor.

Ok gotcha. Your still going to need more cubes to get that hp all N/A.
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Old 10-10-2009, 07:25 PM   #9
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http://www.racingheadservice.com/LSBlock/About.aspx

big cubes, forged crank, solid roller cam, best of everything on the top end = (as pharm said) big $$$$

you'll have to spin it high, and even then, still don't know if it's possible.

why not just a 200 shot on a 500 rwhp engine?

look at the SAM 1000 hp build. ask people who know if this is possible, like Erik Koenig or Ed Curtis.
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Old 10-10-2009, 07:26 PM   #10
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Silliness

Getting 600 RWHP is expensive enough on 440-457 cubes.
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Old 10-10-2009, 07:32 PM   #11
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The RHS or GMPP LSX block..

Lots of cubes and these are a MUST!






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Old 10-10-2009, 07:36 PM   #12
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Quote:
Originally Posted by EDC...View Post
The RHS or GMPP LSX block..

Lots of cubes and these are a MUST!







Dude- I'm blind
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Old 10-10-2009, 07:38 PM   #13
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Check out what B.E.S. did last week at the Engine Masters Challenge. I dont think that you will do any better than that without moving to an aftermarket block such as a Warhawk tall deck for more cubes.

Engine Masters Challenge
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Old 10-10-2009, 07:39 PM   #14
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It goes beyond just spending the 30k for all the parts and getting it all wrapped up. Then you have to keep the car going. Many people just think that yeah I just spent 30 k on a build and that is it. True race cars that really get out there on the ragged edge like you would need for this kind of hp and especially if your really racing it will need to be "touched" up at the end of the season if not rebuilt.

Just something to think about. Your better with a small cube motor (408/402) and forging it and putting a 100-150 shot on it from an economic standpoint.
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Old 10-10-2009, 07:50 PM   #15
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Quote:
Originally Posted by EDC...View Post
The RHS or GMPP LSX block..

Lots of cubes and these are a MUST!







LS7's or C5r's...?
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Old 10-10-2009, 07:54 PM   #16
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Quote:
Originally Posted by EDC...View Post
The RHS or GMPP LSX block..

Lots of cubes and these are a MUST!







ED, teasing us with those heads again
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Old 10-10-2009, 07:56 PM   #17
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Check out what B.E.S. did last week at the Engine Masters Challenge. I dont think that you will do any better than that without moving to an aftermarket block such as a Warhawk tall deck for more cubes.

Engine Masters Challenge

BES musta been asleep for that one. Vengeance built mine and it makes more power than theirs and mine is rear wheel not crank.

Build a LSX with about 12.5 compression and LS7 heads. The long block will set you back around $10-11000.00 The cost in a big power engine is in everything you bolt to it. The drivetrain to handle that power will cost more than the motor. Then there's a fuel system,exhaust,intake....ect.....
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Old 10-10-2009, 08:04 PM   #18
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whats said is that my buddy has a 427 small block in his 67 camaro and puts 700 to the wheels thru a powerglide and 4500 stall with 5.13 gears. i know what it takes to keep a race car alive, i know shits going to break. its crazy how we cant get that kind of power n/a out of a lsx style motor.
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Old 10-10-2009, 08:18 PM   #19
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Originally Posted by nite ryder...View Post
whats said is that my buddy has a 427 small block in his 67 camaro and puts 700 to the wheels thru a powerglide and 4500 stall with 5.13 gears. i know what it takes to keep a race car alive, i know shits going to break. its crazy how we cant get that kind of power n/a out of a lsx style motor.

You can get that kinda power outta a big inch LSX. You wont do it on pump gas though. My motor with a better set of heads and a little more compression on Street Blaze should make north of 700rwhp.
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Old 10-11-2009, 05:27 AM   #20
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Please don't discount what Tony did with that LS based engine in EMC. It's absolutely impressive! Those guys have real strict rules to follow that you don't have when you build something like this...(unless you're class racing)

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Old 10-11-2009, 05:41 AM   #21
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N/A = nitrously aspirated
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Old 10-11-2009, 06:04 AM   #22
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Get one lambo door and some blue wire loom and you should be good to go.
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Old 10-11-2009, 06:29 AM   #23
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Originally Posted by EDC...View Post
Please don't discount what Tony did with that LS based engine in EMC. It's absolutely impressive! Those guys have real strict rules to follow that you don't have when you build something like this...(unless you're class racing)


wow thats amazing. what is it and what does it take to build?
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Old 10-11-2009, 07:19 AM   #24
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Originally Posted by nite ryder...View Post
its crazy how we cant get that kind of power n/a out of a lsx style motor.

It absolutely can be done with an LX based motor, it depends on who you are dealing with, you just can't call one of the mail order hack houses and get that kind of N/A power. An experienced super stock/comp type engine builder will easily get a 400 c.i. LX to 700rwhp, and then some. If you are serious, let me know, it won't be cheap.

Last edited by LSPerformance; 10-11-2009 at 07:21 AM.
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Old 10-11-2009, 07:50 AM   #25
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i sent you a pm
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Old 10-11-2009, 09:20 AM   #26
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Originally Posted by LS2 tiger...View Post
You can get that kinda power outta a big inch LSX. You wont do it on pump gas though. My motor with a better set of heads and a little more compression on Street Blaze should make north of 700rwhp.

what setup are you running?
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Old 10-11-2009, 09:33 AM   #27
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BES musta been asleep for that one. Vengeance built mine and it makes more power than theirs and mine is rear wheel not crank.


HAHAHAHAHAHA



Oh i needed that laugh.... that felt good..
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Old 10-11-2009, 12:49 PM   #28
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big ass cam, lift .7+, valves, needle cam bearings, y2k rockers, 13.5 comp. brass bushings, tight quench, tolerences, splayed caps, light rotating assy thats stronger than the average forged stuff, wet sump, vac pump, a very expensive set of cylinder heads at the very least, an lsx, warhawk, or dart block at the very least to handle the juice on top of the 700hp without any ballooning. or you could go to ls1tech and search the the guys that are putting down 8s. or you could just daydream like myself. i would say 40 to 50k will get you there for the motor.
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Old 10-11-2009, 12:58 PM   #29
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what setup are you running?

454 cubic inch LSX with TEA prepped TFS 245's. Right now I feel that my motor is intake limited with the FAST 90 but I'm looking at other options. I'm looking at LS7 style pro port's and either a sheet metal intake or a GMPP ported carb style intake. I've been looking more at E85 as a option to run more compression (now 11.6:1)

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HAHAHAHAHAHA



Oh i needed that laugh.... that felt good..

Haaaa........hater....
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Old 10-11-2009, 02:15 PM   #30
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Originally Posted by LS2 tiger...View Post
454 cubic inch LSX with TEA prepped TFS 245's. Right now I feel that my motor is intake limited with the FAST 90 but I'm looking at other options. I'm looking at LS7 style pro port's and either a sheet metal intake or a GMPP ported carb style intake. I've been looking more at E85 as a option to run more compression (now 11.6:1)



Haaaa........hater....

You obviously have no idea how the Engine Master Builds work, but let me sum up by saying your "454 power house" would not only have not even been serious competition, but it would have been laughed out the door...

The numbers are AVERAGE hp/tq OUTPUT values over the course of three intentionally heat soaked dyno pulls....


The scores are then corrected for CID more CID meaning more correction to the final score...

There is a reason most builds do not go for giant cubes...
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