LFX - GM continues refining our younger brothers.

[robertisaar]

http://www.gminsidenews.com/forums/f13/2012-camaro-45th-anniversary-edition-boosts-power-comfort-102148/

Compared to the 3.6L V-6 in 2011 models, the new LFX engine features:

New cylinder head design with integrated exhaust manifold
Improved intake port design and larger intake valves within the cylinder heads
Longer-duration intake camshafts
Composite intake manifold
New fuel pump and isolated fuel rail
New, optimized-flow fuel injectors
Structural front cover and cylinder block enhancements
Stronger and lighter-weight connecting rods
Camshaft cap and throttle body design enhancements.

i wonder how much swaps....

[95cutlassproject]

i have no idea but i bet it will be more than worth it

[pocket-rocket]

New cylinder head design with integrated exhaust manifold

Ew

[bszopi]

Ew

Have you seen the pics of these? I haven't seen it for that engine, but on others, its quite interesting. Kinda sucks when it comes to headers, though...

[pocket-rocket]

Kinda sucks when it comes to headers, though...

My point exactly. It also might make heads per platform specific as well...

[HOYS]

DOHC :/. I was hoping that GM had given up with that in a V6 engine back with the Vin X cars.

[robertisaar]

DOHC, when done right, can best a similar OHV engine in nearly category except for weight.

[HOYS]

DOHC, when done right, can best a similar OHV engine in nearly category except for weight.

I was talking about working on them. Vin X alts. Book for 6 hours?

[robertisaar]

well, yeah, but GM put them in a rather difficult place to play with on a LQ1, but it doesn't look like there would have been enough room anywhere else.

[pocket-rocket]

I was talking about working on them. Vin X alts. Book for 6 hours?

I would eat that up all day long... 6 hours? Psha-right, maybe if you were a pygmy midget with 6 fingers... I've got it down to between and hour to hour and a half. That would kill on flat rate...

[jman093]

Ew

I wonder if this is going to become common from OE's. Chrysler's new 3.6L V6 that's replacing all their other V6's has this too.

[pocket-rocket]

What I don't get is if the manifolds are cast into the heads, that means the manifolds are aluminum too. I know the only reason exhaust ports stand up to the heat of exhaust is from coolant, so what happens to the manifolds that aren't cooled by coolant... unless they plan on running coolant through them too, which creates yet another place to spring a leak if you get a bad casting or drop a ratchet on the right spot.

[unchained01]

I wouldnt want one , I see probs coming from this as far as machining or modifing goes . Or having to buy only what GM puts out as far as performane options Might as well have a vette and pay an over priced premium for everything and have 100,000 in a car That you dont want to drive . GM is slowly pushing me away every year

[geoffinbc]

The Vette is the bargain basement supercar. You could buy a Z06 and turn it into a Ferrari or Lambo killer for less than the cost of a Viper. 1000HP with boost is attainable on stock parts other than the pistons and rods. If you don't have the cash for a new Vette then look for a C5 Z06 version. They are dirt cheap compared to anything in its class.

But back on topic. The cast in manifold is done for obvious reasons. It makes assembly faster. But one up side would be a way to mount a turbo very close to the hot exhaust which means fast spool up and getting the most power out of the exhaust to spin the turbine.

If you think cast in exhaust is bad you should take a look at the new Powerstroke. The valvecover IS the intake manifold. So if you have a rocker arm issue or noise you want to take a close look at then the entire manifold system needs to come off both heads. But that also includes the exhaust system and top mounted turbo.

[unchained01]

wow ok i see your point , but still IMO i dont like the integrated design. I did look at that powerstroke and just reinforces the reasons i never bought that car makers products So does anyone have a link or schematic of this new setup ?