GM Tired of Ford's EcoBoost V6 Bragging, Touts More Efficient V8 for Silverado
April 1, 2013 6:45 PM
comment(s) - last by
GM bests Ford's EcoBoost V6 fuel efficiency without complex, expensive turbochargers
Ford has spent a great deal of time and money developing and marketing its EcoBoost family. The company makes a wide variety of EcoBoost engines (which is basically a fancy name for turbocharging plus direct injection) ranging from a
Ford's efforts have paid off, as sales of the naturally aspirated V6- and EcoBoost V6-equipped F-150s have
outpaced those of the V8 models
. And all along the way, Ford has thumbed its nose at the Chevrolet Silverado/GMC Sierra, stating how its EcoBoost V6 gets V8 performance and V6 fuel economy.
GM, however, is hitting back today with the announcement that its new 5.3-liter EcoTec3 V8 engines manages to produce 355 horsepower and 383 lb-ft of torque. While the horsepower number compares favorably with the EcoBoost V6 in the F-150, it's down quite a bit in torque. GM says that in 4x2 trim, the EcoTec3 will be good for 23 mpg highway; checking off the 4x4 option box will result in 22 mpg on the highway.
2014 Chevrolet Silverado
Both of these numbers are 1 mpg better than the EcoBoost F-150. In fact, it matches the fuel economy of Ford’s naturally aspirated, 3.7-liter V6.
“Silverado’s available 5.3-liter EcoTec3 V8 gives customers the best of both worlds,” bragged Jeff Luke, executive chief engineer for the Silverado. “Customers get the proven power and dependability of a V-8 truck engine, with better fuel economy than a leading competitor’s smaller turbocharged V-6.”
5.3-liter EcoTec3 V8 engine
GM's decision to go the "tried and true" route may pay off in the end. Recent reports have suggested that while many manufacturers seem to ace the EPA's tests with turbocharged gasoline engines,
most consumers aren't able to match the sticker numbers in the real world
The Ford Atlas Concept previews the nexxt generation F-150
GM’s fun in the mpg sun, however, likely won’t last long. Ford is reportedly
looking to trim up to 700 pounds
from the next generation F-150, which will go a long way towards improving fuel efficiency. Ford showcased the use of active aero technology on its
Atlas truck concept
(which no doubt is a precursor to the next generation F-150), which boost highway fuel efficiency by 2 mpg.
General Motors 
This article is over a month old, voting and posting comments is disabled
RE: GM.... bleh.
4/2/2013 5:54:43 PM
Wow, this post is so full of misinformation it is almost stunning. Please stop spread FUD on a subject you clearly know nothing about.
For one gas engines run lower exhaust temps than diesels. You can find tons of resources on this but I link just one simple one:
Additionally, Gas engine turbo typically do NOT experience higher lbs of boost compared to diesels. A typical gas turbo application has max lbs of boost numbers ranging from 5lb to 15lb due to denotation potential with pump gas. Compare that to diesel engines experiencing 25 to 32 max lbs of boost as typical applications.
As for RPM ranges, how is my diesel truck’s RPM range from 0 to 6k RPM red line, and I easily can get close to red line when I need to punch it to pass on hills (same use scenario as gassers).
The main reason why diesel turbo historically were more reliable than gas turbos isn’t because it was diesel over gas, both industries had similar turbo technology, the main reason is because of user use case. Back when turbos were more “delicate” diesel operators knew they had to take “care” of the turbo. You can’t go WOT then park the rig and shutdown the engine as it would greatly harm the turbo, you had to do cool downs first. Similarly you can’t start up a rig and go balls out as it would cause premature failure on the turbo and engine. Meanwhile the typical gas users did not educate themselves in these and other things you need to know if you own a turbo vehicle and thus the Urban Legend that gas turbo are terrible quality while diesel turbos are great was born. Today, as mentioned by another person on this thread, the turbos of today are built with new technology designed to deal with people that do not properly do cool downs, warm ups, frequent oil changes, etc.
RE: GM.... bleh.
4/3/2013 10:12:10 AM
oi...Because the burned gases are expanded further in a diesel engine cylinder, the exhaust gas is cooler, meaning turbochargers require less cooling, and can be more reliable, than with spark-ignition engines.
I pull that straight from wiki.
You're confusing inches of manifold pressure with PSI, but this is a common misconception.
That's great if your truck revs to 6k. Typical diesels do not have a high rpm range and that is why the turbos do not have to spin as fast as one for a gas engine. As your rpms go up, the amount of air required to keep the combustion chamber "under boost" climbs as well. An engine at 7000rpm needs double that of one at 3500. A typical diesel with a narrow rpm range means the turbo will operate in a very narrow range as well.
I never said gas turbos are horrible or of low quality, but they are subject to higher rpms, higher temps, surging/back pressure, and all of that affects there reliability.
Instead of arguing with me using e-how, and urban legends, you may want to stop skipping your science classes, pick up a good tech manual, or maybe enroll in a vocational school if you're so inclined.
"My sex life is pretty good" -- Steve Jobs' random musings during the 2010 D8 conference
Consumer Reports: Small Turbo Engines Don't Meet Efficiency Claims
February 5, 2013, 9:29 AM
Ford Atlas Concept Previews More Efficient Next Generation F-150
January 15, 2013, 2:13 PM
Ford Fiesta Gets 1.0L Ecoboost Option Next Year, Sets MPG Aim at Mid-40s
November 20, 2012, 12:29 AM
Report: Ford's Best-Selling F-150 to Lose 700 lbs to Meet EPA Fuel Standards
July 27, 2012, 8:34 AM
Ford F-150's EcoBoost V6 Gets Detailed, Outguns 5.0 V8
September 21, 2010, 12:00 AM
Tesla Motors Ready to "Unveil the D" on October 9
October 2, 2014, 7:52 AM
Lamborghini Reveals 900hp Asterion LPI 910-4 Hybrid Hypercar Concept
October 1, 2014, 4:01 PM
Infiniti Debuts Q80 Hybrid Concept at Paris Motor Show
October 1, 2014, 10:40 AM
Ford’s Use of Aluminum Bodies to Extend to Super Duty Trucks, Chrysler Doubles Ram EcoDiesel Production
September 30, 2014, 10:59 AM
2016 Cadillac ELR to Receive "Engineering Enhancements", 2nd Gen Model Still on the Table
September 24, 2014, 1:30 PM
Google's Autonomous Vehicles Approved to Travel Any Road in California
September 22, 2014, 4:15 PM
Most Popular Articles
New AT&T Mobile Share Value "Double Data" Promotion Lasts Through October
September 28, 2014, 8:32 AM
Update: Apple Releases iOS 8.0.2 Update to Make Up for Botched 8.0.1 Release
September 25, 2014, 8:19 PM
Appalling Negligence: Decade-Old Windows XPe Holes Led to Home Depot Hack
September 8, 2014, 8:58 PM
TiVo Mega Features 24TB of Storage, Can Record Three Years* Worth of TV Content
September 8, 2014, 8:45 AM
FBI Outraged That Apple, Google are Adopting Digital "Locks" to Protect Users
September 26, 2014, 1:00 PM
Latest Blog Posts
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information