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-   V6 LGX Engine, Exhaust, and Bolt-Ons (https://www.camaro6.com/forums/forumdisplay.php?f=233)
-   -   Early LGX Information (https://www.camaro6.com/forums/showthread.php?t=423536)

GretchenGotGrowl 09-16-2015 06:58 AM

Early LGX Information
 
I thought I would kick off the LGX section now that we've seen the performance numbers. Hopefully we'll start seeing some bolt-ons real soon.

  • The 3.6 liter V6 LGX engine is GM’s new high-feature V6 engine. It is a clean-sheet design and shares little with the 3.6L six-cylinder LFX engine it replaces.
  • The LGX sets benchmarks for efficiency, refinement and durability compared to the LFX it replaces. LGX highlights include:
  • Aluminum deep-skirt cylinder block from the LFX mill
  • An enlarged bore of 95 mm (compared to 94mm on the LFX)
  • Enlarged bore centers of 103mm (compared to 106mm on the LFX)
  • An all-new cylinder head design
  • A forged steel crankshaft
  • High-strength connecting rods and pistons
  • Oil-spray piston cooling
  • Active Fuel Management (cylinder deactivation) and Auto Stop-Start system generate fuel savings of 9 percent compared to the 3.6L V6 LFX
  • Improved Variable Valve Timing (VVT) with an ‘intermediate park’ feature
  • Reshaped piston tops to promote a better mix of the air and fuel during the direct injection process
  • Relocated oil pump under the cylinder block and inside the oil pan
  • Acoustic engine cover
  • Stronger, stiffer aluminum block with increased structure in the bulkheads for superior rigidity
  • Tough, refined rotating assembly with a stiff forged-steel crankshaft, friction-reducing polymer-coated pistons and strong high-copper-content, sinter-forged connecting rods
  • New four-cam phasing system with intermediate park technology that enhances efficiency by enabling late inlet valve closing in certain conditions
  • All-new, patented “targeted” cooling system that provides strategic cooling of the engine’s hottest areas while simultaneously fostering faster warm-up to enhance efficiency
  • New, higher-flow cylinder heads that enhance direct injection performance and feature integrated exhaust manifolds
  • Revised, simplified timing drive system with cushioned chain sprockets contributing to quieter engine operation
  • All-new lubrication system with a variable-displacement, two-stage oil pump that enhances efficiency. It is located inside the oil pan, which contributes to greater noise abatement

cyberbro 09-16-2015 07:38 AM

It's really the all around star if your looking for performance and MPG.

bybcous 09-16-2015 09:12 AM

Start stop feature is nice for fuel savings.

KMPrenger 09-18-2015 11:02 AM

I'll be part of the V8 crowd this time around, but you can bet I'll be checking in on you V6 peeps!

Here's what you want:

-intakes
-tunes
-ported throttle body
-ported or filled intake manifold
-high flow cat and catless pipe
-intake manifold spacer (1/2 to 3/4")

OK....no whos going to make this stuff for the V6 crowd.

Just some of these and you guys will be giving stock 5th gen L99s a hard time.

KaBoom1701 09-20-2015 01:16 AM

Quote:

Originally Posted by bybcous (Post 8640994)
Start stop feature is nice for fuel savings.

People are going to hate this auto stop feature trust me. I hate it on my Malibu so I disabled it.

Hopefully GM will allow the V6 Camaro peeps a way to disable this feature if they want.

Back in blk 09-20-2015 06:26 AM

Kaboom I agree with you that auto stop start blows.

KMPrenger 09-20-2015 09:35 PM

Quote:

Originally Posted by KaBoom1701 (Post 8646873)
People are going to hate this auto stop feature trust me. I hate it on my Malibu so I disabled it.

Hopefully GM will allow the V6 Camaro peeps a way to disable this feature if they want.

Just leave the car in Sport mode lol. (yes I know...not the best solution)

Emoto 09-21-2015 04:15 PM

Quote:

Originally Posted by KaBoom1701 (Post 8646873)
People are going to hate this auto stop feature trust me. I hate it on my Malibu so I disabled it.

Hopefully GM will allow the V6 Camaro peeps a way to disable this feature if they want.

Yeah, not being able to turn that off would be a deal breaker for me.

GTIanZ28 09-22-2015 04:54 PM

Quote:

Originally Posted by Emoto (Post 8648796)
Yeah, not being able to turn that off would be a deal breaker for me.

Is the auto stop/start feature on both Manual/Automatic?

Has there been any research done as to whether or not this is actually bad for the engine? Sure it must be hard on starters.

I live in a city and deal with the constant traffic issues and traffic lights. Think it would drive me insane.

fradaj 09-25-2015 11:50 AM

I was watching a video about a 1969 428 Super Cobra Jet Mustang the other day, it was rated at 335HP, the same as the new V6.

Wikedwil 09-26-2015 04:37 PM

Quote:

Originally Posted by KaBoom1701 (Post 8646873)
People are going to hate this auto stop feature trust me. I hate it on my Malibu so I disabled it.

Hopefully GM will allow the V6 Camaro peeps a way to disable this feature if they want.

What exactly is that? The engine shuts off?

ssrs2lt 09-26-2015 06:40 PM

Yes the engine shuts off at stops..some manufacturer s have it on the manual transmission as well. Its super annoying just my opinion..

Jason@JacFab 10-29-2015 10:47 PM

Quote:

Originally Posted by KMPrenger (Post 8644582)
I'll be part of the V8 crowd this time around, but you can bet I'll be checking in on you V6 peeps!

Here's what you want:

-intakes
-tunes
-ported throttle body
-ported or filled intake manifold (Working on it! I have an LGX intake on hand now!)
-high flow cat and catless pipe
-intake manifold spacer (1/2 to 3/4") (Probably not gonna happen, due to the layout of the intake ports (angle) on the heads and the bottom of the intake, it would be expensive to manufacture, I don't see anyone tackling the project in the near future. However, the intake already appears to have quite a bit longer runners than the LFX, this thing is super tall, like GM gave a big finger to everyone that's been making spacers since 2010, so the spacer may not even be needed for it's traditional purposes, GM did something right on this intake in a big way, and a lot of ways, but I can still make it better!)

OK....no whos going to make this stuff for the V6 crowd.

Just some of these and you guys will be giving stock 5th gen L99s a hard time.

See my responses to the above in red. I'm pretty sure spacers are a no go, at least at the moment. The intake runners are quite a bit longer... Unless you just wanted an all out torque monster, I don't think the spacers are good, Unless they put the LGX in the Colorado.

I'm working on the porting/filling of the intake right now, right out of the box, it's 12% better than the stock 12-15 LFX manifold, but 10% worse than my modified LFX intake manifold.

I'm just starting to play with it, but I've got a feeling that I can get it to flow at least as good as the ported LFX intake manifold, if not 2x better. This intake manifold is built to flow, it just needs a little helping hand.

Quote:

Originally Posted by fradaj (Post 8655140)
I was watching a video about a 1969 428 Super Cobra Jet Mustang the other day, it was rated at 335HP, the same as the new V6.

You know what's funny about this? There is speculation that the 6th gen v6 may run a 13.3ish 1/4 mile time. An old family friend had a fully restored cream puff 1970 Mach 1 w/ a 428 SCJ, bone stock. That's real close to what it would run on a good day... It made me extremely happy to beat him repeatedly with my low budget SBC 355 in a heavy 71 Chevelle that was 4 different colors.

booger78z28 12-14-2015 03:34 PM

Quote:

Originally Posted by KaBoom1701 (Post 8646873)
People are going to hate this auto stop feature trust me. I hate it on my Malibu so I disabled it.

How did you do that ? tune, Range?...


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