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Old 04-14-2012, 07:20 AM   #1
Super_jim
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C6 Naturally aspirated – 700HP, Possible?

The guy I work with just bought a 2008 C6 which he claims has 700HP from a dyno so that’s like 750 from the engine.


It does idle a little rough, at around 1000rpm but not anything dramatic. There is no supercharger, no turbo, no nitrix. and the intake looks stock.

I have been using the work “skeptical” should I be?
Anyone with experience in this area?

What do think?
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Old 04-14-2012, 07:38 AM   #2
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Jim, check my sig. Forged, stroked, Lingenfelter 403 LS 2, big cam, heads & intake worked to death, etc. I managed 530hp to the wheels through 4.10's, so 3.42's, maybe 540 rwhp...optimistically that's around 620-630hp to the crank, and thats with a lightweight clutch.

I'd seriously doubt he could make that kind of power n/a, especially with power adders, and especially if it's an oem engine with maybe a good h/c package.

If he has a manual, ask him what clutch he has in it. He'd need a dual disk to handle that kind of power. If it's an auto, ask if he's had it built. The stock drivetrain would melt with that kind of power.

I would say 'skeptical' is a mild but diplomatic adjective in this scenario.
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Old 04-14-2012, 07:56 AM   #3
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Tell you buddy at work to put the crack pipe down...he blowing smoke up your A**...Without power adders, supercharged or Turbo's, he's in fantasy land...
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Old 04-14-2012, 11:28 AM   #4
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Sounds like your pal got sold a nice car with an even nicer line of BS.
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Old 04-14-2012, 12:18 PM   #5
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700+rwhp N/A is possible...but not with a stock intake. RobZ (who frequents the CF site) has an all-bore N/A LS7 (388CI) with a whole lot of work. He has this motor in his C5 Z and has gone 9.3's @ nearly 150mph...with a 6 speed. Conservatively his engine is making nearly 800rwhp.

Tell your friend he needs to go back to whoever sold him that car and ask for a dyno sheet...or should I write, dyno shit.
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Forged 402 stroker, ETP 215 ported/polished heads, 1 7/8" AR headers, Fast 90/LS2 TB, Oz Exo-skel dual disc clutch, 5 point custom roll cage, 4.10 gears, DTE strut brace, DTE hardened output shaft, Rwhp/Rwtq?...enough to go 10.44@133.9 with a 1.55-60' and a slipping clutch...thank you RobZ for driving and ECS for the build.
Old 04-14-2012, 12:26 PM   #6
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Bull-pelosi. Possible, hmmmm, but not at all probable.
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Why do they call it "common sense" when, in fact, it has become so uncommon?

That's my opinion, it outta be your's.
Old 04-14-2012, 02:51 PM   #7
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That is about what I thought.

He has an automatic.

Also, he says it drives fine for a daily driver. This I found suspicious, if GM had to use a super charger to get 620HP (and driveable) I find it difficult to believe....

Anyway thanks for the input.
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Old 04-14-2012, 03:27 PM   #8
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Quote:
Originally Posted by Super_jim View Post
That is about what I thought.

He has an automatic.

Also, he says it drives fine for a daily driver. This I found suspicious, if GM had to use a super charger to get 620HP (and driveable) I find it difficult to believe....

Anyway thanks for the input.
Those numbers would take moving some serious atmospheres of compression, race gas and huge heads and cam combo.

My 434 with a decent cam makes 640 crank on pump gas and has Zero Street manners.

He has a great sense of humor!
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Old 04-17-2012, 08:45 PM   #9
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A buddy of mine ordered an NCM delivery ZR1, then drove it to Lingenfelter to be "polished and masaged." He didn't get their hottest package, but still drove out with about 720-750 HP. He says its scary fast (he moved to FL before I got a ride damn it).

I've forgotten exactly what Lingenfelter did, but I could find it on another thread here ...somewhere.

Bottom line, I'm very skeptical that a stock appearing NA LS3 could achieve 700HP.
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Old 05-06-2012, 09:17 PM   #10
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700 hp is possible if you take the ls3 and swap it with a ls9 then your a pulley away from 700hp. to achieve that kind of power would require exotic materials a microfinished crank and variable valve timing and increased displacment. power isnt everything anyway when you consider how well you can handle it or even if the chassis and other components can handle it. i think if you want more power buy a zr1 and get the wow factor of owning it. i can understand the guys wanting a sleeper or a little more excitement its just that the corvette is a great car as it is and 700hp is just a lot of headaches when you burn through tires break half shafts or differentials. i love my corvette i just want it to sound unique so it wont be like the mercedes range from amg, why spend money on a sls when a c63 sounds the same and carrys four passengers it just doesnt make sense
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Old 05-09-2012, 05:55 PM   #11
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I'm beginning to think you guys dont know shit about engines and horsepower. Heads, Cam, Crank, Bigger Block, etc etc etc is over rated, all you need is to put stickers on your car and you instantly get power. If you dont believe me ask your fellow ricers they'll tell ya. There's a guy with a honda civic in Norman OK that puts out 800hp and he doesnt have turbo's, supercharger, NOS Just a reworked 4 banger with lots of Stickers. I feel I was ripped off purchasing a Lingenfelter package, if I only knew about those damn STICKERS I couldve saved myself lots of money....


Cliff
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Old 05-09-2012, 06:38 PM   #12
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Cliff, you've forgotten the two ESSENTIAL components!! An unpainted carbon fiber hood (or a regular hood painted to look like unpainted CF) and a two foot wing spoiler sitting on the truck of your four door sedan.
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Old 05-09-2012, 06:56 PM   #13
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Quote:
Originally Posted by jasmin360 View Post
700 hp is possible if you take the ls3 and swap it with a ls9 then your a pulley away from 700hp. to achieve that kind of power would require exotic materials a microfinished crank and variable valve timing and increased displacment.
could not be farther from the truth. You can easily build a shortblock that will handle 1,000+ hp (using all new components) for under $5,000. Hell, my short block will easily take 1,000 hp before it complains and I spent less than $5,000 on it SHIPPED to my door. From there it is just a matter of getting heads to flow enough, proper intake/tb, and a cam ground to match the combo. Once you get head flow/velocity high enough you can do it with enough cam. Street manners are another story, but is still possible (depending on your opinion of streetable).
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Old 05-09-2012, 07:04 PM   #14
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Quote:
Originally Posted by Super_jim View Post
The guy I work with just bought a 2008 C6 which he claims has 700HP from a dyno so that’s like 750 from the engine.


It does idle a little rough, at around 1000rpm but not anything dramatic. There is no supercharger, no turbo, no nitrix. and the intake looks stock.

I have been using the work “skeptical” should I be?
Anyone with experience in this area?

What do think?
Line your cars up at the drag strip. See how fast he runs compared to you. I suspect he will not race you.
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Old 05-11-2012, 06:14 AM   #15
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Line your cars up at the drag strip. See how fast he runs compared to you. I suspect he will not race you.
I have yet to ride in his car. I find it very likely his HP is greater than stock.

He is now using 725Hp. I pointed out that it was 700. He broke a 1/2 shaft. He tells me the dealler, where he got it fixed told him it was 725.

I know for a fact that King Cadilac (where he got it fixed) does not have a dyno.

I have started refering to his vet as: "7 million hourse power", and a smile.
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Evolution – It’s NOT a theory, it's an observation.
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