Does the 6.2 Liter engine work like my 5.3 Impala by going to 4 cylinders and when needed going up to 8? I noticed at low speed when it has shifted up it goes to a low rumble in sound, is that normal?

 

That's just how a V8 sounds AFAIK the Camaro doesn't use cylinder deactivation

 

Last week the mechanic and trans guy checked her out and said she was ok and that what I am feeling is the active fuel management working which gets me greater gas mileage. Which is to say that when there is no demand on the engine she drops down to 4 cylinders and back to 8 when there is a demand. Could they be telling me some BS?

 

What does your window sticker say?

 

I dont see AFM on the sticker, so I will stop there again and question them about this again.

 

This is from the Chevy web site:

The 6.2L V8, paired with the standard 6-speed manual transmission, offers 426 horsepower and 420 lb.-ft. of torque. Or opt for the high-tech combination of speed and efficiency of the 6-speed automatic transmission with Active Fuel ManagementTM. It offers 24 MPG highway and delivers 400 horsepower.

 

I googled and ended up on chevy site.

2014 Camaro: Sport Coupe - Performance Cars | Chevrolet
One powerful Soul

The 6.2L V8, paired with the standard 6-speed manual transmission, offers 426 horsepower and 420 lb.-ft. of torque. Or opt for the high-tech combination of speed and efficiency of the 6-speed automatic transmission with Active Fuel Management^TM. It offers 24 MPG highway and delivers 400 horsepower.

 

Mine is an automatic so I think this answers my question, it appears all 6.2L 2SS automatics come with AFM:


The Camaro SS is equipped with a 6.2-liter V-8 engine. With a manual transmission, it generates 426 horsepower at 5,900 rpm and 420 lb.-ft. of torque at 4,600 rpm. With an automatic, it produces 400 horsepower at 5,900 rpm and 410 lb.-ft. of torque at 4,300 rpm. Active Fuel Management is also included with the automatic, allowing the Camaro SS to operate on half of its engine cylinders under certain driving conditions in order to conserve fuel.

 

No Camaro is slow. With over 320 horsepower, even the basest of Camaro models has enough power to produce grin-inducing straight-line blasts. Then there's the ZL1 with a supercharged V8 that manifests 580 horsepower and boasts a 0-60 mph time of 3.9 seconds. That's supercar-quick, and thanks to its built-in launch control, that model can accelerate thus so even by novices. Our vote for the most well-rounded Camaro is the 426-horsepower SS model with the 6-speed manual (our gearbox of choice, as automatic transmissions feature an Active Fuel Management system that reduces horsepower count by 26). With a girth of power channeled to the rear wheels, it's easy to point and shoot the Camaro. But attempting to toss nearly two tons of American muscle around a track is more about finesse than fun. Severely limited rear visibility remains a big tradeoff for the Camaro's aggressive exterior design.