jono_2000

the latest s class uses a 5 litre v8 with 388 bhp , as opposed to the slks 360something, it also has a useful 20 newton-metres more torque. (hmmm... i wonder what a newton metre is?)

And its not even AMG'd yet....

Has anyone heard if it will migrate to the SLK55?

If it doesn't then it must be for marketing reasons they don't want the little SLK to outgun its bigger brethren.

vantage78

Isn't the SLK supposed to outgun the regular engines though? AMG engines have always been more powerful than the non-AMG ones. When this new 5.5 non-AMG comes out, I'm assuming that they will have to bump up the AMG engine to continue this trend. 6.3L AMG V8 perhaps?

jono_2000

it seems the regular "stock" 5.0 V8 in the S class outguns the 5.4 AMG to quite an extent ie 388bhp v 350 and 530nm torque vs 510.

If the new V8 is breathed on by AMG it may well produce even more power

400bhp in a stock SLK anyone?

But right now we're in a position that the stock smaller V8 outguns the AMG 5.4.

It strikes me there are "first-division" AMG and merc engines and "second-division ones". First division in SL55, E55, CLS55 S class etc, and second-division in C, CLK and SLK.

clkcadet

i think i heard somewhere the new "550" engine will have about 380 hp, the 600 will stay the same and the AMG'S will have about 500 some odd hp as well ...but keep in mind that the slk and c class and clk class do not get the blown amg engine, so it might be interesting to see what happens once the new n/a AMG engines come in

mischief

AMG stated that due to the "performance" tuned transmission it produces 25% faster shifts then the regular models

mbbodytech

Looking back on history, it takes a while to phase a new engine into all of the models, but it usually happens. I'd say it's coming to AMG, but which car it will debut in is anyone's guess!

fredfromny

This is the 4 valve engine that will be bored out to 6.3L that has been officially announced for upcoming S and ML AMG models. Whether or not it will migrate to the SLK is still speculation.

Teufel

We (incl. me) were all wrong about one year ago! We all thought the new 4V 5.5L V8 would have close to 410hp. But the 5L V8 already has 388hp! Does that mean the 5.5L would have close to 450hp? Or there is no 5.5L at all but a 6.3L V8 with around 500hp??? I for one can not see a 6.3L V8 in the SLK or C Class or CLK! But then again three years ago a V8 was unthinkable in a SLK!

Does anybody know more about the future Mercedes engines?

www.roadandtrack.com/article.asp?section_id=9&article_id=2406

PC Valkyrie

Remember one important thing: The engine in the upcoming new S500 may not have a 5.0L engine. Rumours are that the engine is going to be a 4 valve 5.5L V8. They may simply want to keep the S500 name because it is very well established.

This would not be too surprising. Look at the 2006 C-class. C230 gets a 2.5L V6 and the C280 gets a 3.0L V6.

Teufel

You are right. The new engine is a 4V 5.5L V8. But what does that mean for the SLK, C, CLK?

1) They will continue to keep the current 3V 5.5L V8 for the next 4-5 years?

2) They will get the upcoming 6.3L AMG engine in the next 1-2 years?

3) They will get an AMG version of the new 4V 5.5L V8 (like the old C43)?

None of the above makes sense to me!?! But if I had to pick one I would say an AMG version of the new engine (410 bhp?). I can not see MB producing two 5.5L engines in parallel for long. And I don't think the 6.3L would fit in and besides that would make them faster than the more expensive S, E, SL...

Anybody with a crystal ball out there? I am just curious. Even though I am saving my pennies for a 911T.:v

jono_2000

yep, its not a 5litre it would appear to be a 5.5L

So, it seems me we have a 5.4 AMG producing 367bhp and a non AMG 5.5 litre producing 380bhp. (euro outputs)

So the block is being bored out to 6.3 for the AMG version of the 5.5.

I'd say the question actually hinges on the future of the AMG 5.4, how long will that survive?

Mercedes spends to much time "marketing" this lot, when they should be going all out for the best possible product, not the best possible product that doesn't embarrass our larger products. Just my two-penneth!

fredfromny

August Motor Trend has reported that the new C Class AMG will have the new 5.4 NA engine with a 400+ HP output. Available starting in 2007 perhaps as a 2008 model. The new C Class chassis is reported to be longer and wider so fitment could be an issue. I'm sure DC will keep this info under wraps not to cannibalize sales from the 2006 MY AMG.

AMG FANATIC

1 Nemwton meter is 0.7375621 pound feet. So 20nm is 14.75124 pound feet.

PC Valkyrie

Great speculation, guys.

Here is my take on what MB will do about their future AMG models.

I think it makes sense that ALL of their engines will become 4 valve designs. I think it is unlikely that the C (and the SLK) will get the upcoming 6.3L AMG engine because they don't want a C/SLK class to outgun their higher E and S AMG models.
My guess is that they will retune/modify the upcoming 4 valve V8 (rumoured 5.5L) 388HP engine which will come out in the new S class and put it into the future C and SLK AMG models. I expect output to be over 400HP to compete with the Audi RS4 and upcoming M3.

We know that the 2006 C55 and SLK55 will be unchanged from the 2005 models. The W203 C-class will be replaced for MY 2008. I wonder whether they will keep the existing 5.4L 3 valve V8 until then.

fredfromny

I agree! The only question is: will Kleemann develop a supercharger kit for this new engine?