4.9 DI Engine From Denali XT...maybe?

Ill throw it out there, get the input from everyone.
What do you think fellas? 326hp in a twin mode system, a 4.9 liter engine with direct injection? Could this be the new small engines that Wallace was talking about? Using its direct injection, this makes hp equal to the 5.3 in a smaller package will probably maintaining or increasing gas milage while reducing carbon footprint.
Anyone think we can expect this engine as an option? Not with the hybrid powertrain,but the engine itself?

I'm wondering what bore/stroke combo brings it to 4.9? Why not 4.8?

As I was Waiting for my wife to decide on some jewelry in the mall last night and I came across the Denali XT info on Autoblog -thank goodness for blackberrys- Of course my first thought was... this engine could definitely be the rumored DI v8 for the Camaro!

But if it does find its way into the camaro, the output would probably have to be around 375hp considering the following two probabilities: First, the DI v6 will have around 300 hp. Second, the Mustang and Challenger will also have around 350-375 in their boss & hemi engines.

Anybody know if they are working on larger version of the DI engines? I'm sure its been mentioned in one of the engine threads at some point.

I'm still hoping the base v8 is the LS3!

Anybody know if they are working on larger version of the DI engines? I'm sure its been mentioned in one of the engine threads at some point.



Yes they are. It's this one that's a surprise.

Yes they are. It's this one that's a surprise.

So, I assume it could be a phase-in where the LS3 is dropped into the Camaro and its direct inject cousin is put into big brother for the initial year or two.

As I was Waiting for my wife to decide on some jewelry in the mall last night and I came across the Denali XT info on Autoblog -thank goodness for blackberrys- Of course my first thought was... this engine could definitely be the rumored DI v8 for the Camaro!

But if it does find its way into the camaro, the output would probably have to be around 375hp considering the following two probabilities: First, the DI v6 will have around 300 hp. Second, the Mustang and Challenger will also have around 350-375 in their boss & hemi engines.

Anybody know if they are working on larger version of the DI engines? I'm sure its been mentioned in one of the engine threads at some point.

I'm still hoping the base v8 is the LS3!
The challenger is in a whole different price category, you really cant compare it. and the new ford engines are just rumors, im thinking the GT mustangs will just get the revisions that the Bullitt mustang got. What is it, 310-320 hp?

So, I assume it could be a phase-in where the LS3 is dropped into the Camaro and its direct inject cousin is put into big brother for the initial year or two.

You know, had you asked me 6 or 12 months ago, I would have been fairly confident of Camaro's powertrain line up. I can't really say that anymore.

Will the Camaro come with a Gen IV smallblock or Gen V at intro? I don't know. But when the Gen V comes - the Gen IV will be history.

The challenger is in a whole different price category, you really cant compare it.
I think model for model, Challenger will be pretty comparable with Camaro in cost. I just hope that they aren't comparable in weight...

The challenger is in a whole different price category, you really cant compare it. and the new ford engines are just rumors, im thinking the GT mustangs will just get the revisions that the Bullitt mustang got. What is it, 310-320 hp?

The R/T version of the Challenger will be in the low $30's right? Somewhat comparable to the Camaro.

I went and did some digging on the 2009/10 Mustang at autoblog, jalopnik, mustang evolution, etc.... the predictions are all over the place ~ umm, that sounds like our board for the camaro ~ anyways, the rumors start with keeping the 4.6L as the base v8, to replacing it with a new 5.0, to the boss 5.7 which would be shared with the F-150?! So, its a crap shoot!

The 2009 F-150 also gets a new 4.2L v8, but they haven't disclosed any hp figures for any of the 2009 v8's.

You know, had you asked me 6 or 12 months ago, I would have been fairly confident of Camaro's powertrain line up. I can't really say that anymore.

Will the Camaro come with a Gen IV smallblock or Gen V at intro? I don't know. But when the Gen V comes - the Gen IV will be history.

I think model for model, Challenger will be pretty comparable with Camaro in cost. I just hope that they aren't comparable in weight...

I guess that transition won't follow history and be sped up b/c of the cafe standards?

Yeah, the Challenger is definitely going to weigh over two tons... only so much dieting you can do to the 300/charger/magnum platform

As I was Waiting for my wife to decide on some jewelry in the mall last night and I came across the Denali XT info on Autoblog -thank goodness for blackberrys- Of course my first thought was... this engine could definitely be the rumored DI v8 for the Camaro!

But if it does find its way into the camaro, the output would probably have to be around 375hp considering the following two probabilities: First, the DI v6 will have around 300 hp. Second, the Mustang and Challenger will also have around 350-375 in their boss & hemi engines.

Anybody know if they are working on larger version of the DI engines? I'm sure its been mentioned in one of the engine threads at some point.

I'm still hoping the base v8 is the LS3!


They worked, and showed a working concept of it. At a recent debut of GM Powertrain show, GM showed off several different technologies. One was HCCI, diesel type ignition for gas engines, and a direct injected L92 making "Over 450hp" in a Caddy Escalade.
Thats over 50hp off a 403hp L92. Imagine that type of boost on an engine with an engine that has a 30hp jump over the L92. We could talk about a 500hp DI 6.2 engine, and something that would make Charlie smile from ear to ear about.
Give me a 500hp DI 6.2 over a 500hp SC 6.2. I wonder the cost difference between the LSA vs a DI 6.2? The weight difference might be worth the justification to go DI if in case DI is more expensive. And if DI is cheaper...well...thats just silly to but a big honkin blower on top of the engine.

The R/T version of the Challenger will be in the low $30's right? Somewhat comparable to the Camaro.

I went and did some digging on the 2009/10 Mustang at autoblog, jalopnik, mustang evolution, etc.... the predictions are all over the place ~ umm, that sounds like our board for the camaro ~ anyways, the rumors start with keeping the 4.6L as the base v8, to replacing it with a new 5.0, to the boss 5.7 which would be shared with the F-150?! So, its a crap shoot!

The 2009 F-150 also gets a new 4.2L v8, but they haven't disclosed any hp figures for any of the 2009 v8's.

im guessin the R/T will fall along the lines of the Charger R/T, which the base is $31,000. if the Camaro is going to be priced within $500 of the mustang ($26,000), the Challenger is just in a whole different price category/market.

We could talk about a 500hp DI 6.2 engine, and something that would make Charlie smile from ear to ear about.
Give me a 500hp DI 6.2 over a 500hp SC 6.2. I wonder the cost difference between the LSA vs a DI 6.2? The weight difference might be worth the justification to go DI if in case DI is more expensive. And if DI is cheaper...well...thats just silly to but a big honkin blower on top of the engine.

I don't think it'll get to 500, due to 2010 emissions - but yeah!

BTW, the LS9 adds 100 pounds over the LS3.

I don't think it'll get to 500, due to 2010 emissions - but yeah!

BTW, the LS9 adds 100 pounds over the LS3.

Whats different between current emissions and present? DI actually has lower emissions then a standard engine would, especially cold start emissions.
Maybe it can still pass...maybe.

Whats different between current emissions and present? DI actually has lower emissions then a standard engine would, especially cold start emissions.
Maybe it can still pass...maybe.


I'm not sure what the specifics are. But don't expect all the new tech on the GenV smallblock to get us much if any more power. Emissions tuning will gobble that up. I think at this very moment, we've peaked on horsepower for awhile

Well Charlie, thanks for crapping in my Frosted Flakes this morning.
At least the Giants still beat those miserable Pats.

Well Charlie, thanks for crapping in my Frosted Flakes this morning.
At least the Giants still beat those miserable Pats.

Well, there's a silver lining Al. Imagine the kind of power we're currently getting, in cars which weigh several hundred pounds less.

variable valve timing is always a possiblity. but it defenitely wont help with costs.

One thing stands out to me about this new engine. The displacement is 4.9L. What Popular Camaro engine was also 4.9L? The 302!!!

I have a feeling that the Denali XT uses a truck version of the engine that turns lower RPM than what the Camaro might get.

yeah this engine will be the entry level v8 for the camaro. A 4.9l v8 with DI and e85 sounds very appealing. i bet with a m6 the camaro will get class leading gas mileage by far. i was getting a little scared. but i am glad gm did their homework for once.

yeah this engine will be the entry level v8 for the camaro.

Well, we don't know that. But I'll be at the press preview in Chicago tomorrow, and I'll snoop around.

Originally Posted by Z284ever:
I'm not sure what the specifics are. But don't expect all the new tech on the GenV smallblock to get us much if any more power. Emissions tuning will gobble that up. I think at this very moment, we've peaked on horsepower for awhile
Maybe the tuning can be tweaked in the aftermarket...:)

yeah this engine will be the entry level v8 for the camaro.

I'd be interested to know how this conclusion was reached.

Well, we don't know that. But I'll be at the press preview in Chicago tomorrow, and I'll snoop around.

Please do... from one of the FbodFather's latest posts it seems that everything has now been decided internally.

I know you said you'll look into it, Charlie...
But, I'd like to pose a general question. This engine blindsided us, a little, right?

Now, I know it's mated to a Hybrid powertrain, but is this (GenV style: w/ DI) a production-ready engine? I mean...is this a "real" motor? Or a "this is what we will do when everything's ready. But right now we've just got a normal 4.8 in the concept" type of powerplant.

EDIT: I'm getting really excited about this! Ha, who'd a thunk it?

I would be interested in hearing the bore, stroke, and compression ratio of this new engine. Does it use cathedral or square port heads? at RPM are the power and torque peaks at? Maybe a dyno graph?

I belive the Gen V' will use the new square bore L92/LS3/LS7/LS9/LSA cyl head. Like the LS6 Gen III head turned into the LS2 Gen IV head, the LS7 head GenIV will be the basis for the Gen V head already seen in the new 6.2 engines.

I'm not sure what the specifics are. But don't expect all the new tech on the GenV smallblock to get us much if any more power. Emissions tuning will gobble that up. I think at this very moment, we've peaked on horsepower for awhile

Emissions for cars isn't changing. But they are for trucks:

http://www.dieselnet.com/standards/us/ld_t2.php

I belive the Gen V' will use the new square bore L92/LS3/LS7/LS9/LSA cyl head. Like the LS6 Gen III head turned into the LS2 Gen IV head, the LS7 head GenIV will be the basis for the Gen V head already seen in the new 6.2 engines.

you mean square "port" instead of bore, right?