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6 comments
flame_on09
flame_on09

I really disagree with your statement of "and has notably fewer vibrations".  I am searching everywhere to make sure people know how bad the 2014 Silverado vibrates and I have found many forums on the problem.  Once you get above say 68mph, you can feel the vibrations on anything you touch.  Also if you look at the passenger seat, you will see the vibration of the back of the seat.  I took delivery of my truck on the 2nd of April.  I set out on my first long trip on the 3rd of April to drive from Houston, TX to Detroit, MI.  I vibrated all the way.  I am not looking forward to the next long drive.

cajuncarguy
cajuncarguy

I would be real worried about GM using variable cam timing in a V8 with a single cam in block. The cam actuators, located deep in the engine would be hell to change and all of the extra wear and load on the camshaft, push rods, rocker and arms with all of the constant cam movement will be a mechanical nightmare. I have been consulting to new car dealership service departments for many years and have witnessed first hand the problems GM had had with with new engine technology including variable cam timing actuators. Wait a couple of years guys. The Eco Boost has been out for 3 years and has proven solid.

lasvegascolonel
lasvegascolonel

@cajuncarguy Hard to say what the GM engines will do, but we do know that the Ecoboost has had its share of service bulletins plus poor highway gas mileage relative to the GM V8s.  The other concern is that turbos tend to require service down the road.  Still, almost half of F150 people order the V6 turbo, thinking they're going to get good gas mileage.  Too bad I guess.

Chevypower79
Chevypower79

Don't forget the Chevy has a 3.08 axle ratio to get that highway mpg. Everyone seems to look over that. It also has less torque than the EcoBoost, and it's peak torque is at 4,000 rpm as opposed to Ford's 2,000 rpm. I'm not knocking the 5.3 (though I never really liked the previous versions), but make no mistake: no magic has been created.

lasvegascolonel
lasvegascolonel

With the 5.3 V8 beating Ford's V6 Ecoboost in highway mpg, plus a much stronger powertrain warranty, etc. I think this will be a challenge for Ford; however, the Atlas concept will likely be a winner for the upcoming F150. Now, GM has to do what Ram did....put the 8 speed in the GM twins; that will enhance mpg further. Hope start/stop is able to be shut off, otherwise a dealbreaker for some.

Bandit10
Bandit10

Truck Trend, the 5.3 Liter now has 355 Hp, not 335, you have a typo in your first paragraph. #'s are important.

Truck Trend