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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 09-13-2011, 05:47 PM   #1
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-569 rwhp- LS3 LG Motorsports build

Looking for a MAX. effort, stock displacement build for your LS3?

This is one example of what can be done when you have a little more room to work than just a head and cam package. We finished this build up earlier this year for a weekend road race Corvette project.

  • Stock LS3 block
  • Forged Callies crankshaft
  • Forged Rods
  • Forged Pistons
  • 12:1 compression ratio
  • LG Motorsports CNC ported LS3 heads
  • G6XX Custom grind cam
  • LG 1 7/8" Super Pro Headers
  • FAST 102mm LSXR intake
  • 102mm throttle body
  • Tilton clutch
  • 100 octane un-leaded

This would be a bit aggressive for a daily driver, but for someone wanting the most from a stock displacement build, it shows what can be done with a 6.2L package.



That should put it roughly in the 655-670 HP at the engine...or 30-40 more than a OEM ZR1
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Old 09-13-2011, 06:02 PM   #2
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what kind of numbers for 416, your st2 ls3 heads. pump gas
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Old 09-13-2011, 06:10 PM   #3
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what kind of numbers for 416, your st2 ls3 heads. pump gas

Last 416 we built for a 4th gen Camaro put down 549 rwhp and 530 rwtq through a 9" Ford rear end, that was using a smaller cam than the above package.

Depends on the total combination of course. Generally speaking going to a stroker combination increases HP roughly 10-15 and torque 35-45 at the tires given no other changes.
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Old 09-13-2011, 06:50 PM   #4
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Price?
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Old 09-13-2011, 07:01 PM   #5
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NICE!
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Old 09-13-2011, 07:03 PM   #6
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that is awesome
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Old 09-13-2011, 08:07 PM   #7
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dang great numbers!
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Old 09-13-2011, 08:13 PM   #8
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How long till the motor goes KABOOM!
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Old 09-13-2011, 08:14 PM   #9
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What is the price ??? figured that it was about the same for a 416 build ???? I am looking for a nice big cam, and large dose of gas.
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Old 09-13-2011, 09:11 PM   #10
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might be a newb question, but how does one go about raising the compression ratio?
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Old 09-13-2011, 09:59 PM   #11
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Mil the heads , popup pistons
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Old 09-13-2011, 10:28 PM   #12
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Quote:
Originally Posted by Anthony @ LG Motorsports View Post
Looking for a MAX. effort, stock displacement build for your LS3?

This is one example of what can be done when you have a little more room to work than just a head and cam package. We finished this build up earlier this year for a weekend road race Corvette project.

  • Stock LS3 block
  • Forged Callies crankshaft
  • Forged Rods
  • Forged Pistons
  • 12:1 compression ratio
  • LG Motorsports CNC ported LS3 heads
  • G6XX Custom grind cam
  • LG 1 7/8" Super Pro Headers
  • FAST 102mm LSXR intake
  • 102mm throttle body
  • Tilton clutch
  • 100 octane un-leaded
This would be a bit aggressive for a daily driver, but for someone wanting the most from a stock displacement build, it shows what can be done with a 6.2L package.


That should put it roughly in the 655-670 HP at the engine...or 30-40 more than a OEM ZR1
Holy moley!
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Old 09-13-2011, 10:40 PM   #13
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Quote:
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How long till the motor goes KABOOM!
Why do you say that? It's stock cubes, but all new internals it looks like.
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389rwhp & 411rwtq
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Old 09-13-2011, 10:58 PM   #14
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would a boost a pump be needed for this kind of power
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750/641 rwhp/rwtq
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Old 09-13-2011, 11:23 PM   #15
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Originally Posted by Anthony @ LG Motorsports View Post
Last 416 we built for a 4th gen Camaro put down 549 rwhp and 530 rwtq through a 9" Ford rear end, that was using a smaller cam than the above package.

Depends on the total combination of course. Generally speaking going to a stroker combination increases HP roughly 10-15 and torque 35-45 at the tires given no other changes.
So stroking normally gives more tq than hp right?

That is what I had read. Stroke gives tq and bore gives hp.

Those numbers are insane. The 416 I had built only put down 463rwhp and 468tq but though an auto and retaining the VVT.
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Old 09-14-2011, 02:01 AM   #16
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Originally Posted by Jcobra View Post
How long till the motor goes KABOOM!
Lol, if you drive with passion, heat your car up before driving, and not be too aggressive on the throttle, hopefully it won't explode, and it'll live with ya for years

Building a car like this would be what i like to call a "night car". Others will use it as a weekend warrior. Not your daily driver
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Old 09-14-2011, 09:06 AM   #17
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How long till the motor goes KABOOM!
It wasn't built to go Kaboom...it was built to live 4000-7000 RPM for 30-60 mins at a time on a road course.

Given 3-4 weekends a month on track, it would need a freshen about once a year to maintain those numbers. Those doing 1 or 2 weekends a month you could go 2-3 seasons before it needed to be freshened.
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Old 09-14-2011, 09:10 AM   #18
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Quote:
Originally Posted by SRT10KLLR View Post
So stroking normally gives more tq than hp right?

That is what I had read. Stroke gives tq and bore gives hp.

Those numbers are insane. The 416 I had built only put down 463rwhp and 468tq but though an auto and retaining the VVT.
Adding stroke mainly increases torque more than anything because you are changing the mechanical advantage of the engine by providing a longer lever arm. Because HP is a function of TQ, HP increases as well but not to the same degree.

On some builds you need to watch RPM's because adding stroke increases piston speed and thus the loading on the pistons, so you generally do not want a very long stroke if you want to spin the engine to the moon.
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Old 09-15-2011, 05:57 PM   #19
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would a boost a pump be needed for this kind of power
No
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Old 09-16-2011, 12:26 PM   #20
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would any kind of fuel system upgrade be needed?
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750/641 rwhp/rwtq
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Old 09-19-2011, 10:06 AM   #21
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would any kind of fuel system upgrade be needed?
Injectors will have to be upgraded.
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Old 09-19-2011, 10:16 AM   #22
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How does this handle 93 octane? Estimated numbers?
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Old 09-19-2011, 11:00 AM   #23
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How does this handle 93 octane? Estimated numbers?
This particular build would not, we would have to drop the compression about 1/2 point to take 93 pump. I would expect a slight drop in power, maybe 10 hp
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Old 09-22-2011, 10:33 AM   #24
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569whp all motor!! thats the way to go baby!!

Great Job LG!!
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Old 09-22-2011, 11:43 AM   #25
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How long till the motor goes KABOOM!
You must not know LG. See if you can find some videos of Lou piloting the Vette and come back and appologize. Race motors aren't built to go boom. If they do you lose and drivers get mad. This motor wasn't built to make impressive numbers once. It was built to go flat out all season I'm sure.
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