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2013 ATS 2.0T RWD, DP, Intake, HPT, CC
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Discussion Starter #1
I've been wondering why there hasn't been any apparent progress on headers for the ATS with a 3.6 V6. So I went over to Camaro 5 forums to see what those guys are up to.
The LFX has an integrated exhaust manifold into the head.

From the GM press release:
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.

The LFX engine is significantly lighter than the current 3.6L V-6. The integrated cylinder head/exhaust manifold design saves approximately 13 pounds (6 kg) per engine over the cylinder heads and manifolds of the current engine,
The camaro 5 thread has mostly snarky comments but a good image :
http://www.camarohomepage.com/2012/741.08.jpg

full thread
http://www.camaro5.com/forums/showthread.php?t=306766


Looks like a high flow cat and clean exhaust path are the best that can be done.
 

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Vendor
ATS 2.0T gone, 17 Charger Scat Pack current
Joined
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1,180 Posts
I've been wondering why there hasn't been any apparent progress on headers for the ATS with a 3.6 V6. So I went over to Camaro 5 forums to see what those guys are up to.
The LFX has an integrated exhaust manifold into the head.

From the GM press release:


The camaro 5 thread has mostly snarky comments but a good image :
http://www.camarohomepage.com/2012/741.08.jpg

full thread
http://www.camaro5.com/forums/showthread.php?t=306766


Looks like a high flow cat and clean exhaust path are the best that can be done.
Yeah, they have been like that for a few years, the new 3.6 Pentastar from Dodge is the same way.

How long before the intake/head/exhaust is one assembly??
 

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Registered
2013 ATS 2.0T RWD, DP, Intake, HPT, CC
Joined
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2,404 Posts
Discussion Starter #3
Integrated manifolds raise the stakes on head porting. I'm wondering if there is much to gain from porting the manifold portion and how it effects the exhaust port.

If effective bolt-ons become a thing of the past, that will will leave FI, or a cam swap, as the only options and that sucks. FI is great, but it is a big investment. Bolt-ons are much more affordable and way to gradually change the car.
 
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