Why does the Sierra HD Build Page say 6.0 "Variable Timing" ?

[Cosmic Charlie]

THIS: Vortec^® 6.0L Variable Valve Timing V8 SFI engine

 

 

http://www.gmc.com/sierra-2500hd-pickup-truck/build-and-price.html?x-zipcode=01985#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@

 

[ATMINF]

I believe it is because they are VVT engines, similar to the 3.6L V6 engines they also make for the last 10 years.

[Cosmic Charlie]

http://www.gminsidenews.com/index.php?page=Engine_Guide

[galliher_nc]

Because the 6.0L L96 V8 has variable valve timing.

[Cosmic Charlie]

OK - I was confussing it with Cylinder de-activation ... 8 to 4 ...

 

How many years has GM used this on V-8's ? Here's what I found ...

 

The first GM full-size truck to receive VVT was the 2007 GMC Sierra Denali with the 6.2-liter overhead valve V-8.

 

GM has announced that all V-8 powered Chevrolet and GMC trucks now feature variable valve timing (VVT) for the 2010 model year. A quick trip back to engineering 101 reminds us that VVT is a piston technology that enables continuous control of valve opening and closing. The end result is better engine breathing, with fewer emissions and improved fuel economy.

VVT has already been available on GM’s small-block 6.0L and 6.2L V-8s. The widely-anticipated addition of VVT to the 4.8L and 5.3L V-8s completes its rollout in the truck small block V-8 engine line. GM made VVT possible by adding a cam phaser to the end of the camshaft that electro-hydraulically controls cam position by taking in information from a sensor and the engine control module.

Read more: http://gmauthority.com/blog/2009/11/gm-completes-rollout-of-variable-valve-timing-in-its-truck-small-block-v-8/#ixzz3ebn4t000

 

 

When the solenoid is energized, the valve traps oil pressure inside the phaser cavity and prevents it from escaping. As oil pressure builds, it pushes the sliding cam drive or rotor inside the phaser. This rotates the cam’s position to advance timing. De-energizing the solenoid allows oil pressure to bleed out of the phaser oil cavity and the cam returns to its original position.

[BlackZ71Silverado]

It says "VVT" because it's a variable valve timing engine like stated above.

 

Your posts, along with cut and paste jobs from sites and links you posted with engine information are somewhat confusing and really don't make sense.

Is there a question you would like answered???

 

 

Sent from my crappy iPhone 6

using Tapatalk

[Cosmic Charlie]

Sorry for my confusion ...

[galliher_nc]

How many years has GM used this on V-8's ? Here's what I found ...

The L96 with VVT has been in the Silverado/Sierra HD since 2011.

 

The 5.3L has had it since 2010, IIRC.

[SMiller]

The L96 with VVT has been in the Silverado/Sierra HD since 2011.

 

The 5.3L has had it since 2010, IIRC.

I believe the L96 has been in the HD truck since the body style switch in '07 1/2.

 

 

Great motor with zero worries!

[Cowpie]

I don't mind the VVT, at least the L96 doesn't have that goofy cylinder shutdown crap that the 1500 series motors all have now. Factored into my decision to buy my 2015 2500HD 6.0.

 

Per GM Authority on the L96

 

http://gmauthority.com/blog/gm/gm-engines/l96/

 

 

Camshaft Phasing: the L96 features variable valve timing, maximizing engine performance for given demands and conditions. At idle, for example, the cam is at the full advanced position, allowing exceptionally smooth idling. Under other conditions, the phaser adjusts to deliver optimal valve timing for performance, drivability and fuel economy. At high rpm’s it may retard timing to maximize airflow through the engine and increase horsepower. At low rpm’s it can advance timing to increase torque. Under light loads, it can retard timing at all engine speeds to improve fuel economy.