60° 2.8 DOHC V6

[Sorin]

The new 2.8L V-6 VVT engine debuts in a new, entry-level model of the Cadillac CTS for 2005. A modified version of the 3.6L V-6 VVT that is available in several Cadillac models as well as the new Buick LaCrosse, the 2.8L V-6 VVT is packed with technologies such as fully variable valve timing of the intake and exhaust valves and a dual-stage variable intake manifold to deliver outstanding flexibility, fuel economy and emissions control.

Taken from here. The next DOHC 60° V6. Since GM said this line of engines bottoms out at 200hp/200lb.ft., I'm assuming those are the figures this engine will have.

w00t, new engine.

[Sorin]

Full article about the 2.8L was posted later today. Full article here

It's going to have 210hp @ 6500rpm and 194lb.ft. @ 3300rpm. So they lied about the 200lb.ft. figure, but at least it's not too far off. VVT, forged internals, etc. And 75hp/L, not bad :wtf:

[geoffinbc]

Why the drop in displacement? I want my cubic inches!!!

[Sorin]

Drop in displacement? You mean from the 54° Opel pile of shit?

Well GM did say the DOHC 60° V6 line would include 2.8, 3.2, 3.6 and 3.8 so I wouldn't be surprised if a future CTS option would be a 3.2 from this family. That would give the CTS several engines and would make sense since they're aiming at European sport sedans and they've historically done similar things.

But why not the drop in displacement? This 2.8L 60° almost matches the output of the 3.2L 54° Opel, so imagine what the 3.2L 60° will be pushing. The 2.8L gets 75hp/L, so if they bumped the 3.6L from 255 up to 270, it would get the same ratio, and would give the 3.2L 240hp and the 3.8L 285hp. But I doubt they will all have a 75hp/l output, but whatever it ends up being it'll be good. It's not like they can't get a lot of power out of them, as durability isn't an issue since all these engines come with forged internals.

The 3.6L isn't too far away from FWD northstar output, so I wonder how the 3.8L will turn out......with 2 less cylinders and .8L less displacement.

[Lyle's GTP]

I think GM is complicating things too much, this is too many new engines at once. Have you ever checked any consumer reports. GM's first line cars always fuck-up bad. It always takes a couple years (6-7) to work out the kinks. Or a model change, but then they are back at square one with a bunch of niggling little problems again. Will they ever get a jump on the Japanese? Well I guess one thing GM has going for it is that the european cars keep getting worse. Auto manufacturers have to stop building there cars in China and Mexico. Don't they know that they are like Gucci bags then, "cheap knock-offs".

Lyle

[ProjectMM]

it also sounded like there thing of offering a turbo? i think they said 370HP and 350 ft pounds of torque! that would be bad A$$, if it's true!

[614streets]

Who needs displacement with naws? Cool, real nice to hear there is a 2.8 version.
Sad part is hi po parts for these engines will be sparse unless they are widely used in all GM lines and also put in rwd vechicles. Cough, aint happening at chevy. Cough. Screw caddys. Lincolns own

[SappySE107]

I think the intention was to make it hi po as it comes. I wonder what they can handle for boost or nitrous without even touching the motor.

[Sorin]

A few specs from GM have showed up.

2792cc, 170cid, 89mm x 74.8mm bore/stroke, and a 7,200 RPM fuel shut off (redline?) which is incidentally 600 rpms higher than the 3.6L.

[quantum110]

compair to the 3.6L...



and the 3.6L in the Buick...



The Buick Motor would be the one to look into swapping into an Older FWD since it's set up for FWD.

[Gemmer]

?

I dont see the point if its just a destroked/debored 3.6...unless GM is making sure no other car makes the same #s as its flagship cars...

Hmm, did they just flip the intake for the buick model, or did they design a new one? Ide like to see under the cover =(

[Sorin]

Re: ?

I dont see the point if its just a destroked/debored 3.6...unless GM is making sure no other car makes the same #s as its flagship cars...

Hmm, did they just flip the intake for the buick model, or did they design a new one? Ide like to see under the cover =(

Not quite sure I understand what you mean, but this family of engines was designed from the outset for 2.8, 3.2, 3.6, 3.8, 4.0. The 3.6 just happened to be the first one they brought out. The line of engines was supposed to be as flexible as possible, which included making multiple displacements possible without a lot of work. Lots of technology, lots of applications, strong enough for n/a or boost, all for as cheaply as possible.

So I wouldn't be surprised if destroking and deboring a bigger engine to make a smaller displacement was one of their plans from the beginning.

[quantum110]

L67...What?

Saab Plans Turbo V-6

By Peter Robinson

WardsAuto.com, Aug 5 2004

At 280-hp, the new turbocharged 2.8L will be Saab?s most powerful engine.

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MILFORD, MI ? Saab Automobile plans to drop a 280-hp turbocharged version of General Motors Corp.?s all-new 2.8L quad-cam V-6 into its 9-3 model.

The new engine, expected to be launched simultaneously with the introduction of the 9-3 Sporthatch wagon next summer, also will be offered in the 9-3 sedan and cabriolet.

Turbo V-6 Saab 9-3 in works.

However, it won?t be fitted into next year?s facelifted 9-5, which remains based on the old Vauxhall Cavalier/Opel Calibra platform.

Currently, Saab?s most powerful engine is the 250-hp 2.3L 4-cyl., which can be found under the hood of the 9-5 Aero.

For the 9-3, the single turbocharged unit develops ?280 hp-plus? and will be tied to either a 6-speed manual or 5-speed automatic gearbox.

http://wardsauto.com/ar/auto_saab_plans_turbo/index.htm

[geoffinbc]

Do I see 2 serpentine belts on that 2.8L? WTF

I thought the point of serp belt was to eliminate the 2 (sometimes up to 6) belts that used to be on cars.

[Manitcor]

that is odd for a GM engine, but not unprecendeted, not sure why they did it though replace that front tensinor with an idler and I think you could do it with one belt