GM Reveals 3.0L Twin Turbocharged LGW V6, 3.6L LGX V6 - Page 2

*DGthe3* · 03-20-2015, 09:06 PM

Quote:

Originally Posted by rc610

So a TT v6 will come with as much hp as the L99 lol

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Uh ... this isn't the first 400+ hp TTV6 in the world. Its not even the first such engine from GM. Getting power comparable to the next 'engine class' (I3 to I4, I4 to V6, V6 to V8, V8 to V10/V12) is kinda what automakers use forced induction for.

What I'd be interested in seeing is how it compares to the L99 in terms of weight, cost, and fuel economy. Cranking the boost up that high would have to have some impact on the efficiency of the engine, but on the other hand its going to have AFM & Stop/Start which should give it a fairly healthy improvement in fuel economy over other turbo6s. I believe the LF3 (the 420 hp twin turbo V6) comes in at 485 lbs, and that doesn't have any S/S hardware (like a beefed up battery & alternator system) or AFM bits. Wouldn't be surprised if it crests 500 lbs for a 'small' 3.0L engine, while the L99 at more than twice the displacement is 450ish. And cost ... no clue what the 3.0L with just about every piece of modern engine technology would cost, but the chances of it being less than an L99 are slim to nil.

But it is an interesting engineering exercise. 6 cylinder engines with cylinder deactivation are rare, and I think this is the first time that an automaker has used forced induction on such a 6 cylinder, almost certainly the first time anyone has tried it at such high boost levels.

Q'smuscle · 03-20-2015, 09:22 PM

Quote:

Originally Posted by DGthe3

Uh ... this isn't the first 400+ hp TTV6 in the world. Its not even the first such engine from GM. Getting power comparable to the next 'engine class' (I3 to I4, I4 to V6, V6 to V8, V8 to V10/V12) is kinda what automakers use forced induction for.

What I'd be interested in seeing is how it compares to the L99 in terms of weight, cost, and fuel economy. Cranking the boost up that high would have to have some impact on the efficiency of the engine, but on the other hand its going to have AFM & Stop/Start which should give it a fairly healthy improvement in fuel economy over other turbo6s.

True! And that will be interesting!

Q'smuscle · 03-20-2015, 09:23 PM

Wait ! Why do ppl like the GTR ?

Obzen · 03-21-2015, 01:35 AM

Quote:

Originally Posted by Q'smuscle

I wouldn't and don't know why you would!

What's funny about that? This stuff is all expected!

Just don't think a 50hp difference would be enough to justify the two engines in the same car. I would want a bigger gap between the two models.

Regardless. It's an awesome engine. I just doubt it'll end up in the Camaro any time soon. We'll see.

VADER SS L99 · 03-21-2015, 04:07 AM

I kinda skimmed the details but I didn't see DI for the 3.0. No DI for that engine? I wonder why. Would have made more power with better mpg. Wonder if GM doesn't want that engine to have the problems associated with DI. I bet the 3.6 TT would have made just as much mpg but of course more power plus not having to spend all the new money R&Ding and producing a brand new engine. Kinda doesn't make sense to me unless they just wanted a more reliable engine for a more mainstream car.

The new NA 3.6 having as much power as a 4th gen LS1 is pretty crazy. We are for sure spoiled as far as power goes.

GretchenGotGrowl · 03-21-2015, 09:16 AM

Direct inject is integral to the lfx, lgx, lf3 and lf4. Since this engine is based on those platforms, it almost certainly has DI. 18 psi and 9.8 CR aldo hints it isn't PI.

Q'smuscle · 03-21-2015, 10:23 AM

Quote:

Originally Posted by Obzen

Just don't think a 50hp difference would be enough to justify the two engines in the same car. I would want a bigger gap between the two models.

Regardless. It's an awesome engine. I just doubt it'll end up in the Camaro any time soon. We'll see.

Well , if you think about it , the Current v6 only has 77HP less than the L99 SS Camaro.

Obzen · 03-21-2015, 11:42 AM

Quote:

Originally Posted by Q'smuscle

Well , if you think about it , the Current v6 only has 77HP less than the L99 SS Camaro.

True

Not the LS3 though.

Q'smuscle · 03-21-2015, 01:22 PM

Quote:

Originally Posted by Obzen

True

Not the LS3 though.

Of course not ! Because it has 26 more horses but I did say L99 and you said SS!

c5Legend · 03-21-2015, 02:28 PM

man id trade right away for a v6 TT Camaro.. would be fun

911medic · 03-21-2015, 10:50 PM

Quote:

Originally Posted by DGthe3

6 cylinder engines with cylinder deactivation are rare...

Tell that to Honda, who has sold hundreds of thousands, if not millions of them, over the years.

911medic · 03-21-2015, 10:56 PM

Quote:

Originally Posted by FenwickHockey65

A number of new and enhanced features are designed to make the all-new 3.6L V-6 one of the industry’s quietest, smoothest and most durable engines:

Two-stage PCV system – This revolutionary system maintains low oil consumption. If features a pre-separator between the block and the engine’s rear cover and a high-efficiency separator in the center of the block’s “V.”

Hmm. Maybe they're finally addressing the current DI engine's intake valve coking issues by updating the PCV system for DI? Catch cans no longer necessary?

TommyTheCat · 03-22-2015, 02:37 AM

No way a twin turbo V6 Camaro is coming out if the V8 will be barely more powerful, because it will probably be slower with all the added weight. It's a great engine, but it won't be in any plain old 6th gen
I'll even bet on it.

03-21-2015, 04:07 AM	#19
VADER SS L99 Drives: 2013 A6 GT 5.0 Join Date: Nov 2009 Location: Edmond, OK Posts: 2,909	I kinda skimmed the details but I didn't see DI for the 3.0. No DI for that engine? I wonder why. Would have made more power with better mpg. Wonder if GM doesn't want that engine to have the problems associated with DI. I bet the 3.6 TT would have made just as much mpg but of course more power plus not having to spend all the new money R&Ding and producing a brand new engine. Kinda doesn't make sense to me unless they just wanted a more reliable engine for a more mainstream car. The new NA 3.6 having as much power as a 4th gen LS1 is pretty crazy. We are for sure spoiled as far as power goes. __________________ BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.

03-21-2015, 09:16 AM	#20
GretchenGotGrowl Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010 Location: Little Rock, AR Posts: 7,129 View My Garage	Direct inject is integral to the lfx, lgx, lf3 and lf4. Since this engine is based on those platforms, it almost certainly has DI. 18 psi and 9.8 CR aldo hints it isn't PI. __________________ New Ride -- 2015 Z06 2LZ (stock) -- Journal Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread

03-21-2015, 02:28 PM	#24
c5Legend Camaro5 Drives: 2010 Camaro 2LT Join Date: Jun 2011 Location: WA Posts: 1,155	man id trade right away for a v6 TT Camaro.. would be fun __________________ My Build '11 Chrysler 300 Limited / '10 Camaro 2LT

03-20-2015, 09:23 PM	#17
Q'smuscle Account Suspended Drives: 2011 Camaro VR 2SS/RS & Impala Join Date: Apr 2013 Location: Riverside,ca Posts: 5,342 View My Garage	Wait ! Why do ppl like the GTR ?

03-22-2015, 02:37 AM	#27
TommyTheCat SHKE BKE Drives: 2013 Camaro Join Date: May 2014 Location: SoCal Posts: 3,108	No way a twin turbo V6 Camaro is coming out if the V8 will be barely more powerful, because it will probably be slower with all the added weight. It's a great engine, but it won't be in any plain old 6th gen I'll even bet on it.